|
|
Key to EuphorbiaceaeView taxon page for Euphorbiaceae
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Inflorescence a compact, flower-like cyathium comprising an involucre  Group of bracts more or less held together as a unit, subtending a flower, fruit (acorn cup), or inflorescence. of fused bracts that encloses a cluster of 1-stamened staminate flowers and 1 pistillate flower; involucre margin bearing 1–5 nectary glands, these sometimes bearing petal-like appendages ..... EUPHORBIA 1' Inflorescence not a cyathium, not flower-like; pistillate and staminate flowers generally ± separated, not enclosed in an involucre; stamens 2–many per staminate flower 2. Leaves opposite  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. ..... MERCURIALIS 2' Leaves alternate  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'. 3. Leaf peltate  With the stalk attached toward the middle, not at a margin, of a flat structure such as an indusium, scale, or leaf. , blade  Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped. palmately veined and lobed, 1–5 dm; inflorescence a panicle  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. , terminal ..... RICINUS 3' Leaf not peltate, blade pinnately veined, entire  Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.). or toothed, generally << 1 dm; inflorescences various 5. Stem and leaf  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). hairs stellate  Pertaining to a hair or other structure with three or more branches radiating in two or three dimensions from a common point. 6. Leaf margin bluntly toothed; stipules persistent; staminate inflorescence axillary  Pertaining to or within an axil, especially a leaf axil. ..... BERNARDIA 6' Leaf margin entire; stipules inconspicuous; staminate inflorescence terminal or axillary ..... CROTON 5' Stem and leaf hairs 0 or unbranched 7. Bracts subtending pistillate flowers leaf-like, toothed, > fruit ..... ACALYPHA 7' Bracts subtending pistillate flowers 0 or scale-like, entire, << fruit 8. Leaves with stinging, nettle-like hairs; stamens 3–6; base of pistillate bracts without glands; stem sap clear ..... TRAGIA 8' Leaves ± glabrous or glaucous; stamens 2–3; base of pistillate bracts with 2 large glands; stem sap milky or clear 9. Annual or perennial  Completing life cycle (germination through death) in more than two years or growing seasons, generally non-woody (at least above ground) to woody; includes perennial herbs as well as subshrubs to trees; the abbreviation 'per' only refers to perennial herb, not to the word 'perennial' alone. herb; stamens 2; seeds 2–3.5 mm ..... STILLINGIA
Please use this Google Form for Contact/Feedback
Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|
|
|