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Group 7: Trees, shrubs, or woody vines; only staminate flowers present; pistillate or bisexual flowers unavailable for examination
1' Plant free-living, rooted in ground2. Trunk unbranched, generally stout, covered with persistent woodyleafbases; leaves 4–7 m, pinnately compound ..... ARECACEAE (Phoenix) {G9,10}Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
2' Trunk(s) generally branched, stout or slender, generally not covered with persistentleafbases; leaves generally smaller,Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
simpleor compoundComposed of a single part; undivided; unbranched.
3. Leaves stiff and sword-like, 0.6–2 m, base much expanded, white, fleshy; inflorescence a largepanicle..... RUSCACEAE (Nolina) {G6,8,9,16}1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, a branched inflorescence in which the basal or lateral flowers (or some of them) open before the terminal or central flowers on any axis. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a panicle-like inflorescence is one in which at least some of the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are attached (stalked or unstalked) to branches and not directly to the main axis of the inflorescence and in which floral development may or may not proceed as in 1.
3' Leaves not sword-like, mostly smaller, base not much expanded, white, and fleshy; inflorescences various4. Leavesoppositeor1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
whorledArranged in groups of three or more at nodes or positions along an axis (e.g., three leaves per node).
5. Leaves compound6. Leavespalmate..... SAPINDACEAEMore than two structures or parts (e.g., veins, lobes, or leaflets) radiating from a common point in two dimensions (i.e., in one plane).
6' LeavespinnateFeather-like; pertaining to veins, lobes, leaflets, or other structures arranged in two dimensions (i.e., in one plane) along either side of an axis; a leaf is odd-pinnate if there is a terminal leaflet, even-pinnate if there is not, and either odd- or even-pinnate may be 1-pinnate (blade divided into primary leaflets), 2-pinnate (primary leaflets divided into secondary leaflets), 3-pinnate (secondary leaflets divided into tertiary leaflets), etc.
7' Tree or large shrub; sepals generally 5 or number difficult to determine, very small8. Flowerssessileor borne on short, stoutWithout a petiole, peduncle, pedicel, or other kind of stalk.
pedicels..... OLEACEAE (Fraxinus) {G9,12,16}Stalk of an individual flower in an inflorescence, or the corresponding structure in fruit.
8' Flowers borne on elongated, thread-likepedicels..... SAPINDACEAE (Acer negundo) {G9}Stalk of an individual flower in an inflorescence, or the corresponding structure in fruit.
9. Leaf toothed or lobed
10' Leaf pinnately veined and toothed
11' Petals 5, united insalverformcorolla; stamens 4,Having a slender tube and an abruptly spreading, flat limb; often applied to a fused corolla.
epipetalous..... SCROPHULARIACEAE (Buddleja) (2) {G9,19}Pertaining to stamens that are fused to the petals to various extents and therefore appear to arise from them.
9' Leafentire(strongly wavy in some Garrya species)Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
12. Inflorescence acatkinSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
13. Leaf blades well developed;catkinselongate, pendent ..... GARRYACEAE {G9,11}Spike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
13' Leaves scale-, awl-, or needle-like; "catkins" short, not pendent — actually catkin-like pollen cone of gymnosperm14. Internodes very short; stem concealed by persistent, overlapping, green, scale-, awl-, or needle-like leaves; pollen sacssessilebeneath scales of small cone ..... CUPRESSACEAE (2) {G4}Without a petiole, peduncle, pedicel, or other kind of stalk.
14' Internodes long; stem green, bearing dry, scale-like, often early-deciduous leaves; pollen sacs borne on filament-like stalk ..... EPHEDRACEAE {G4,9}12' Inflorescence not acatkinSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
15. LeaveswhorledArranged in groups of three or more at nodes or positions along an axis (e.g., three leaves per node).
16' Leaf flat or with midvein raised on abaxial face
15' Leavesopposite1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
18' Herbage glabrous or variously hairy19. Petals fused proximally; stamens fused to corolla
19' Petals free or 0; stamens free from corolla21. Leaves thick, leathery, evergreen; flowers in peduncled, head-like clusters; sepals well developed ..... SIMMONDSIACEAE {G9,12}21' Leaves thin, deciduous; flowers insessileWithout a petiole, peduncle, pedicel, or other kind of stalk.
axillaryclusters or short-peduncled racemes; sepals very smallPertaining to or within an axil, especially a leaf axil.
22. Bark of young stems ± red; flowers pedicelled in shortaxillaryracemes; stamens 5–10 ..... PICRODENDRACEAE (4) {G9,12}Pertaining to or within an axil, especially a leaf axil.
22' Bark of young stems gray; flowers ±sessileinWithout a petiole, peduncle, pedicel, or other kind of stalk.
axillaryclusters; stamens 1–4 ..... OLEACEAE (Forestiera) {G9,12}Pertaining to or within an axil, especially a leaf axil.
4' Leavesalternate(leaf often1. Arranged singly, often spirally, along an axis - e.g., one leaf per node. 2. Occurring in different ranks, appearing to be between, not directly above or below, as 'stamens alternate petals'.
oppositea tendril or inflorescence in Vitaceae)1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
23. Tendrils present; plant a vine; inflorescence of umbels or apanicleof head- or umbel-like clusters1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, a branched inflorescence in which the basal or lateral flowers (or some of them) open before the terminal or central flowers on any axis. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a panicle-like inflorescence is one in which at least some of the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are attached (stalked or unstalked) to branches and not directly to the main axis of the inflorescence and in which floral development may or may not proceed as in 1.
24. Tendrils eachoppositea1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
leaf; calyx 0 or 5-lobed; petals 5, adherent at tips, ± yellow ..... VITACEAE (Vitis) {G9,12,23}Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
24' Tendrils 2+ nearpetiolebase; perianth parts 6 in 2 whorls of 3, petal-like, free, white to ± green or ± yellow ..... SMILACACEAE {G6,8,9,16}Leaf stalk, connecting leaf blade to stem; sometimes more or less indistinct.
23' Tendrils 0; plant a shrub or tree, rarely a vine; inflorescence various25. Inflorescence acatkinorSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
spike1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, an unbranched inflorescence in which the flowers are sessile and nearly always open from the bottom to the top of the inflorescence. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a spike-like inflorescence is one in which the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are sessile and attached directly to the main axis of the inflorescence, not to branches, and in which floral development may or may not proceed as in 1.
26. Leaves compound
27' Leaves 1-pinnate, leaflets 5–2128. Plant evergreen — inflorescence resemblescatkinwhen young, but is actually a branchedSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
panicle..... ANACARDIACEAE (Pistacia) {G11,12}1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, a branched inflorescence in which the basal or lateral flowers (or some of them) open before the terminal or central flowers on any axis. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a panicle-like inflorescence is one in which at least some of the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are attached (stalked or unstalked) to branches and not directly to the main axis of the inflorescence and in which floral development may or may not proceed as in 1.
29. Shrubs of ± saline desert habitats; leaves sometimes thick, ± fleshy; spikeserector very short andUpright; vertically oriented.
axillaryPertaining to or within an axil, especially a leaf axil.
30. Leaf blades generally flat; perianth present though generally small and inconspicuous; bracts 0 or notpeltate..... CHENOPODIACEAE (2) {G6,8,9,11,15}With the stalk attached toward the middle, not at a margin, of a flat structure such as an indusium, scale, or leaf.
30' Leaf blades generally ±cylindric; perianth 0; bractsElongate, with parallel sides and, at any point, round in transverse section.
peltate..... SARCOBATACEAE {G9,11}With the stalk attached toward the middle, not at a margin, of a flat structure such as an indusium, scale, or leaf.
29' Shrubs or trees, generally of non-saline habitats; leaves mostly thinner, not fleshy; spikes orcatkinsSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
erectto pendentUpright; vertically oriented.
31. Leaves scale-, awl- or needle-like; plants evergreen — catkin-like structure actually pollen cone of a gymnosperm
32' Pollen sacssessileon abaxial side of scale-like structuresWithout a petiole, peduncle, pedicel, or other kind of stalk.
33. Scales with 2 pollen sacs; needle-like leaves 1–30 cm; bark generally separating in flakes or plates ..... PINACEAE {G4}33' Scales with several pollen sacs; needle-like leaves (if present) 1–2.5 cm; bark thick,fibrous, persistent ..... CUPRESSACEAE (2) {G4}1. Pertaining to structures that are composed at least in part of more or less thread-like but usually tough elements (e.g., Yucca leaves). 2. Pertaining to a root system composed of many roots similar in length and thickness (e.g., grass roots).
31' Leaves with well developed blades; plants evergreen or deciduous34. Bractlets of inflorescence well developed and readily visible at time of flower35. Catkins pendent36. Catkin-bractlets fringe-margined, early-deciduous; stamens 8–60; trees ..... SALICACEAE (Populus)36' Catkin-bractletsentireor appearing 3-lobed, persistent; stamens 1–10; shrubs or trees ..... BETULACEAE {G9,11}Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
35' Catkins ± stiff, ±erecttoUpright; vertically oriented.
spreadingbut generally not pendentOriented more or less perpendicularly to the axis of attachment; often, more or less horizontal.
37. Low, brittle shrubs; leaves thin,crenate..... EUPHORBIACEAE (Acalypha) {G9,11}Pertaining to margins with shallow, rounded teeth, between which are usually acute sinuses (i.e., scalloped)
37' Shrubs or trees, not brittle; leavesentireor toothed —Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
catkinbracts sometimes early-deciduous ..... SALICACEAE (Salix)Spike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
34' Bractlets of inflorescence 0 or very inconspicuous at time of flower38. Evergreen shrubs or trees39. Main veins ofleafparallel or nearly so — 2 perianth whorls actually present but sepals small and easily overlooked ..... FABACEAE (Acacia) (2)Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
39' Main veins ofleafclearlyOrgan arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
pinnateFeather-like; pertaining to veins, lobes, leaflets, or other structures arranged in two dimensions (i.e., in one plane) along either side of an axis; a leaf is odd-pinnate if there is a terminal leaflet, even-pinnate if there is not, and either odd- or even-pinnate may be 1-pinnate (blade divided into primary leaflets), 2-pinnate (primary leaflets divided into secondary leaflets), 3-pinnate (secondary leaflets divided into tertiary leaflets), etc.
40. Leaves glabrous or withstellatehairs, not gland-dotted; sepals present; generally of dry-land habitats;Pertaining to a hair or other structure with three or more branches radiating in two or three dimensions from a common point.
catkinsslender, pendent, generally >= 2 cm ..... FAGACEAE (2) {G9,11}Spike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
40' Leaves glabrous or with minute, straight hairs, dotted with tiny resin glands; sepals 0; generally of moist, often wetland habitats;catkinsshort, dense, generally < 2 cm ..... MYRICACEAE (2) {G9,11}Spike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
38' Deciduous shrubs or trees41. Sepals small but evident42. Sepals 5–7; stamens 5–20; veinspinnate;Feather-like; pertaining to veins, lobes, leaflets, or other structures arranged in two dimensions (i.e., in one plane) along either side of an axis; a leaf is odd-pinnate if there is a terminal leaflet, even-pinnate if there is not, and either odd- or even-pinnate may be 1-pinnate (blade divided into primary leaflets), 2-pinnate (primary leaflets divided into secondary leaflets), 3-pinnate (secondary leaflets divided into tertiary leaflets), etc.
leafbases generally symmetric ..... FAGACEAE (2) {G9,11}Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
42' Sepals 4; stamens 4; veinspalmate;More than two structures or parts (e.g., veins, lobes, or leaflets) radiating from a common point in two dimensions (i.e., in one plane).
leafbasesOrgan arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).
oblique..... MORACEAE {G11,12}Having unequal sides or an asymmetric base.
41' Sepals 0 or calyx modified into cup- or saucer-shaped structure or reduced to a nectary43. Leaves dotted with tiny resin glands; individual flowers difficult to distinguish ..... MYRICACEAE (2) {G9,11}43' Leaves not gland-dotted; individual flowers clearly distinguishable on close examination ..... SALICACEAE {G9,11}25' Inflorescence not acatkinorSpike or spike-like (e.g., Alnus) inflorescence of unisexual flowers with inconspicuous perianths (generally wind-pollinated), usually pendent and often with conspicuous bracts.
spike1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, an unbranched inflorescence in which the flowers are sessile and nearly always open from the bottom to the top of the inflorescence. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a spike-like inflorescence is one in which the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are sessile and attached directly to the main axis of the inflorescence, not to branches, and in which floral development may or may not proceed as in 1.
44. Leaves and stems armed with prickles
44' Foliage not prickly, sometimes stems thorny or leaves spiny-toothed46. Leaves palmately lobed47. Leavespeltate; inflorescence aWith the stalk attached toward the middle, not at a margin, of a flat structure such as an indusium, scale, or leaf.
panicle..... EUPHORBIACEAE (Ricinus) {G9,12}1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, a branched inflorescence in which the basal or lateral flowers (or some of them) open before the terminal or central flowers on any axis. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a panicle-like inflorescence is one in which at least some of the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are attached (stalked or unstalked) to branches and not directly to the main axis of the inflorescence and in which floral development may or may not proceed as in 1.
47' Leaves notpeltate; inflorescence aWith the stalk attached toward the middle, not at a margin, of a flat structure such as an indusium, scale, or leaf.
head..... PLATANACEAE {G9,10,12}1. A dense, often spheric inflorescence of sessile or subsessile flowers.
2. In Asteraceae and some other groups, a head-like inflorescence is one in which sessile or subsessile inflorescence units (e.g., heads in Asteraceae, umbels enclosed by involucres in Eriogonum), instead of individual flowers, are attached in a short dense cluster without an evident axis or branches.46' Leaves not palmately lobed48. Stems and leaves densely covered withstellatehairs ..... EUPHORBIACEAE {G9,15}Pertaining to a hair or other structure with three or more branches radiating in two or three dimensions from a common point.
48' Stems and leaves glabrous or hairy but hairs notstellatePertaining to a hair or other structure with three or more branches radiating in two or three dimensions from a common point.
49. Stamens many50. Sepals 4
{G9, 19}51' Leaves strongly aromatic; petals 0; anthers dehiscing by uplifted lids ..... LAURACEAE ([Laurus]) (2) {G9}50' Sepals 552. Flowers in spheric heads; petals yellow, generally concealed by stamens; leavessimpleor 2-pinnate ..... FABACEAE (Acacia) (2)Composed of a single part; undivided; unbranched.
52' Flowers in racemes; petals white, conspicuous; leavessimple..... ROSACEAE (Oemleria) {G9}Composed of a single part; undivided; unbranched.
49' Stamens 12 or fewer53. Leaves compound
54' Leafletsentireor teeth not gland-tippedHaving margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
55. Leaflets 3–20, lance-linear toovate, 10–130 mm ..... ANACARDIACEAE (2) {G9,20,23}Egg-shaped (i.e., widest below the middle) in two dimensions (i.e., in one plane), as a leaf.
55' Leaflets 7–33, linear-oblong or narrowlyelliptic, 2–10 mm ..... BURSERACEAE {G9,20}In the shape of a flattened circle or ellipse; wider than linear
53' Leavessimple(occasionally reduced to scales)Composed of a single part; undivided; unbranched.
56. Shrub with thorny, generally leafless green stems; leaves scale-like to narrowlyoblong, early deciduous ..... SIMAROUBACEAE (Castela) {G9,10,23}Longer than wide, with nearly parallel sides; wider than linear.
56' Tree, shrub, or woody vine, thorns occasionally present but stems generally leafy; leaves various, sometimes deciduous in winter or dry season
57' Flower parts generally in 4s, 5s, or 6s58. Flowers in involucred heads, these generally in few- to many-headed clusters ..... ASTERACEAE {G6,8,9,12,14,17}58' Flowers solitary or variously clustered, not in involucred heads59. Leaves generally ± gray, either softly hairy or covered with powdery scales ..... CHENOPODIACEAE (2) {G6,8,9,11,15}59' Leaves green60. Petals present61. Leavesentireto lobed, not spiny-toothed; inflorescence a terminal orHaving margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
axillaryPertaining to or within an axil, especially a leaf axil.
panicleor umbel-like cluster, or flowers 1; flower parts generally in 5s1. In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, a branched inflorescence in which the basal or lateral flowers (or some of them) open before the terminal or central flowers on any axis. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a panicle-like inflorescence is one in which at least some of the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are attached (stalked or unstalked) to branches and not directly to the main axis of the inflorescence and in which floral development may or may not proceed as in 1.
61' Leaves spiny-toothed orentire; inflorescence anHaving margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
axillaryPertaining to or within an axil, especially a leaf axil.
cyme; flower parts in 4s or 5s1. In flowering plants excluding Asteraceae and some other groups, a branched inflorescence in which the central or uppermost flower opens before the peripheral or lowermost flowers on any axis. see 2. In Asteraceae and some other groups, a cyme-like inflorescence is one in which the central or uppermost inflorescence units (e.g., heads in Asteraceae, umbels enclosed by involucres in Eriogonum), instead of individual flowers, develop and mature before the peripheral or lowermost inflorescence units on any axis.
63. Stamens generally 4,alternatepetals ..... AQUIFOLIACEAE {G9,19,23}1. Arranged singly, often spirally, along an axis - e.g., one leaf per node. 2. Occurring in different ranks, appearing to be between, not directly above or below, as 'stamens alternate petals'.
63' Stamens 4–5,oppositepetals ..... RHAMNACEAE (Rhamnus) (2) {G9}1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
60' Petals 064. Leaves strongly aromatic; anthers dehiscing by uplifted lids ..... LAURACEAE ([Laurus]) (2) {G9}64' Leaves not aromatic; anthersdehiscentby slitsOpening at maturity to release contents; usually pertaining to anthers or fruits.
65. Stamens = in number to andalternatesepals ..... RHAMNACEAE (Rhamnus) (2) {G9}1. Arranged singly, often spirally, along an axis - e.g., one leaf per node. 2. Occurring in different ranks, appearing to be between, not directly above or below, as 'stamens alternate petals'.
65' Stamens = in number to andoppositesepals or > in number than sepals1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
66. Leafblade2–12 mm; shrubs ..... PICRODENDRACEAE (4) {G9,12}Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.
66' Leafblade30–140 mm; trees or large shrubsExpanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.
67. Leaf 3-veined from base; inflorescence asessileWithout a petiole, peduncle, pedicel, or other kind of stalk.
axillarycluster ..... CANNABACEAE (Celtis) {G12}Pertaining to or within an axil, especially a leaf axil.
67' Leaf 1-veined from base; inflorescence a stalkedumbelor umbel-like1. In flowering plants excluding Asteraceae and some other groups, an inflorescence in which three to many pedicels and, if compound, branches (rays) radiate from a common point; characteristic of but not confined to Apiaceae. 2. In Asteraceae and some other groups, an umbel-like inflorescence is one in which three to many stalked inflorescence units (e.g., heads in Asteraceae, umbels enclosed by involucres in Eriogonum), instead of individual flowers, radiate from a common point of attachment without an evident axis or branches.
raceme..... MORACEAE (Maclura) {G9}In flowering plants excluding Asteraceae, Cyperaceae, Poaceae, and some other groups, an unbranched inflorescence in which the flowers are borne on pedicels and nearly always open from the bottom to the top of the inflorescence. 2. In Asteraceae, Cyperaceae, Poaceae, and some other groups, a raceme-like inflorescence is one in which the inflorescence units (e.g., heads in Asteraceae; spikelets in Cyperaceae and Poaceae), instead of individual flowers, are stalked and attached directly to the main axis of the inflorescence, not to branches, and in which floral development may or may not proceed as in 1.