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Key to EricameriaView taxon page for Ericameria
(For a list of species in Ericameria, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Phyllaries ± equal length, leaf-like or paper-like; sometimes each outer phyllary with a leaf-like or paper-like tip 2. Ray flowers generally 1–18 (sometimes 0 in Ericameria greenei) 3. Leaves glabrous to ± short-hairy, dotted with sessile  Without a petiole, peduncle, pedicel, or other kind of stalk. or blister-like glands sunken in deep, round pits, resinous 4. Heads in leafy spike-, raceme-, or narrow, panicle-like clusters; peduncles  Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae). 1–15 mm; flowers 5–19 ..... E. bloomeri 4' Heads solitary; peduncle Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae). 20–70 mm, bracts generally 0; flowers 28–78 ..... E. linearifolia 3' Leaves glabrous, tomentose  Covered with densely interwoven, generally matted hairs. , or stalked-glandular, glands not in pits, often resinous 6. Leaves with spreading  Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. , gland-tipped hairs 7. Stem densely, silvery-white tomentose; leaves generally oblanceolate, 2–7 mm wide, margins often wavy; phyllary tips erect  Upright; vertically oriented. ..... E. discoidea 7' Stem white to ± green, closely tomentose, hairs tightly matted; leaves generally linear  Elongate, with nearly parallel sides; narrower than elliptic or oblong. , 1–3 mm wide, margins flat or rolled under, not wavy; phyllary tips erect to spreading ..... E. parryi var. aspera 6' Leaves ± glabrous or ± white tomentose, hairs ± tightly-matted, not stalked-glandular ..... E. parryi (in part) 9' Heads (2)4–20+, generally not overtopped by distal-most leaves 10. Flowers 10–18 per head  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. ; outer phyllaries sometimes leaf-like; SnBr (Bear Valley) ..... var. imula 10' Flowers 4–7 per head; outer phyllaries paper-like; SNH, GB, SnBr, DMtns 1' Phyllaries unequal in a graduated series, paper-like or outer wholly leaf-like or with leaf-like tips or subapical patches 12. Ray flowers generally (0)1–10(30) 13. Ray and disk corollas white; outer and mid phyllary tips abruptly pointed, spreading or recurved, leaf-like, arising from obtuse  Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle. to notched summit of phyllary body; 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). oblanceolate or narrowly obovate, often folded, 2–4 mm wide; Inyo Co. ..... E. gilmanii 13' Ray and disk corollas yellow; phyllary tips acuminate  Having a long-tapered, sharp tip, the sides concave. , acute  Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle. to rounded or abruptly pointed, erect, sometimes leaf-like 14. Mid phyllaries < 1 mm wide 15' Style appendage > stigma; rays 1–20; flower (Jul)Aug–Dec 16. Mid phyllary midvein scarcely evident to slightly raised and slightly widened toward tip; disk flowers 4–8; fruit glabrous to densely hairy ..... E. nana (2) 16' Mid phyllary midvein conspicuously raised throughout its length or on the distal 1/2 and slightly to greatly widened toward tip; disk flowers 5–20; fruit hairy 17. Mid phyllary tips acute to long-acuminate; midvein generally prominently raised along phyllary length, slightly widened toward tip; heads in cyme-like clusters; DMtns ..... E. laricifolia (2) 17' Mid phyllary tips rounded to acute; midvein generally distally prominently raised as a much darker, abaxial, narrowly obovate structure, proximal portion of midvein not noticeably raised or not at all evident; heads in raceme- to panicle-like clusters; SCo, DSon ..... E. palmeri 18. Leaves 5–20(30) mm; axillary  Pertaining to or within an axil, especially a leaf axil. leaves 2–10 per node  Position on a stem from which one or more structures (especially leaves, buds, branches, or flowers) arise. ; outer and mid phyllaries strongly thickened near tip; midveins often not evident on proximal 1/2 of each phyllary; flowers 6–12(14); Riverside to Ventura cos. ..... var. pachylepis 18' Leaves 20–40 mm; axillary leaves 1–2 per node; phyllary tips not strongly thickened; midveins generally evident on proximal 1/2 of each phyllary; flowers 12–30; San Diego Co. ..... var. palmeri 14' Mid phyllaries > 1.0 mm wide 19' Style appendage >= stigma; rays 1–30; flower (Jul)Aug–Dec ( Ericameria pinifolia occasionally flowering in spring) 20. Mid phyllary midvein scarcely evident to slightly raised and slightly widened distally; phyllary margins entire  Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.). , glabrous; disk flrs 4–8; leaves without regularly spaced deep resin pits; DMtns ..... E. nana (2) 20' Mid phyllary midvein prominently raised on distal 1/2 or throughout length of phyllary; phyllary margins entire, glabrous or ciliate  Having generally straight, conspicuous hairs along margins or edges. to fringed  Having ragged or finely cut margins. ; disk flowers 6–25; leaves generally with regularly spaced deep resin pits 21. Mid phyllary tips acute to long-acuminate; midvein generally prominently raised throughout phyllary length, slightly widened distally; margins glabrous or ciliate; DMtns ..... E. laricifolia (2) 21' Mid phyllary tips mucronate to long-acuminate; margins ciliate, fringed, or irregularly toothed; widespread 22. Tips of outermost phyllaries rounded, acute, acuminate, or abruptly pointed; fruit generally silky to densely hairy ..... E. fasciculata 22' Tips of outermost phyllaries generally abruptly pointed, leaf-like; fruit glabrous or hairy, more densely distally 23. Leaves 3–18(23) mm; ray flowers 2–6; disk flowers 5–14; generally dunes or sand hills along or near coast (occasionally inland), Sonoma to Los Angeles cos. ..... E. ericoides 23' Leaves 10–40 mm; ray flowers 3–10 in fall, 15–30 in spring; disk flowers 11–25; sandy to stony, often disturbed soils away from immediate coast, Ventura Co. and s ..... E. pinifolia 24. Leaves wedge-shaped, obovate, or spoon-shaped, 2–16 mm wide, tips generally obtuse, rounded, or notched ..... E. cuneata 24' Leaves thread-like, linear, elliptic  In the shape of a flattened circle or ellipse; wider than linear , oblanceolate, or oblong  Longer than wide, with nearly parallel sides; wider than linear. , 0.3–12 mm wide, tips acute 27. Leaves and often young stem dotted with round, ± evenly spaced, resin-filled pits 28' Outer and mid-level phyllary tips rounded to acute or acuminate; corolla yellow 29' Leaves thread-like to narrowly oblong or oblanceolate, grooved, 0.5–3 mm wide 30' Phyllary midvein obscure or very prominently raised and expanded at tip 31. Phyllary midvein generally obscure proximal 1/2, tip bearing a prominent, ± spheric resin gland ..... E. teretifolia 31' Phyllary midvein prominently raised and expanded at tip 32. Leaves 25–90 mm; heads in flat-topped or convex cyme-like clusters, peduncle 1–15 mm, bracts 0–7, scale-like; flowers 10–25 ..... E. arborescens 32' Leaves 10–25 mm; heads 1 or in raceme- to panicle-like clusters, peduncle 3–20 mm, leafy or bracted; disk flowers 6–16(22) ..... E. brachylepis 27' Leaves and young stem lacking round resin pits 33. Phyllaries spiraled, outermost leaf-like, inner parchment-like, bodies of outer and mid phyllaries with tooth-like, spreading to recurved tips; Shasta, Tehama, and Trinity cos., serpentine soils ..... E. ophitidis 33' Phyllaries generally aligned vertically, dry, paper-like (if spiraled, outer and mid phyllary tips not tooth-like); tips long-tapered, erect or recurved; widespread, often abundant on various soils ..... E. nauseosa 34' Fruit hairy, ± long-hairy or silky (only distally in Ericameria nauseosa var. washoensis) 35. Style appendages generally < stigmas (± =) 36. Corolla lobes  1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. 0.5–1 mm ..... var. hololeuca 36' Corolla lobes 1.5–2.5 mm 35' Style appendages > stigmas 38' Corolla lobes ± glabrous; fruit hairy throughout 39' Stem closely tomentose with tightly matted hairs, generally ± yellow-green, sometimes becoming ± white; leaves present or 0 at flower
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Gradually curved downward or backward.