Jepson eFlora
Key to families | Table of families and genera

Key to Stylocline

View taxon page for Stylocline

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Longest paleae winged throughout, wing widest in proximal 2/3 of palea; phyllaries 1–3.5 mm, cordate or elliptic to obovate, ± persistent

2. Wing of longest palea elliptic to ± obovate; disk flower ovary (0.2)0.3–0.6 mm; disk pappus bristles (5)6–12(13); heads woolly, dull, hairs evident ..... S. citroleum

2' Wing of longest palea ± cordate; disk flower ovary 0–0.2 mm; disk pappus bristles 1–5(6); heads ± cobwebby, often shiny, hairs hidden by palea wings ..... S. gnaphaloides

1' Longest paleae winged distally, wing widest in distal 1/3 of palea; phyllaries 0 or <= 0.5 mm, ± awl-shaped, deciduous

3. Receptacle 2.8–3.5 × width, club-shaped; disk flower ovary 0.3–0.6 mm; fruit 0.6–0.8 mm; heads nearly spheric, largest 3–4 mm diam; longest paleae 1.9–3.1 mm; proximal leaves obtuse ..... S. sonorensis

3' Receptacle 4–8 × width, ± cylindric; disk flower ovary 0–0.3(0.4) mm; plant with > 1 of the following: fruit 0.8–1.6 mm, heads ovoid to fusiform, largest heads 5–9 mm diam, longest paleae 3.4–4.5 mm, proximal leaves acute

4. Heads ± spheric, woolly, largest 5–9 mm diam; longest paleae 3.4–4.5 mm; outermost paleae ± closed

5. Bodies of longest paleae cartilaginous; fruit compressed front-to-back; largest distal leaves 4–11 mm, all ± elliptic to oblanceolate, distal-most generally 0.8–1.2 × heads ..... S. intertexta

5' Bodies of longest paleae except midvein papery; fruit compressed laterally; largest distal leaves (7)11–17 mm, some or all awl-shaped to lanceolate, distal-most generally 1.5–2 × heads ..... S. micropoides

4' Heads ovoid to fusiform, tomentose, largest 1.5–4 mm diam; longest paleae 2–3.3 mm; outermost paleae open, concave

6. Largest heads 1.5–2.5 mm diam; longest palea 2–2.7 mm; fruit 0.7–1 mm; disk corolla 0.8–1.1 mm, generally 4-lobed; leaves obtuse, not mucronate ..... S. masonii

6' Largest heads 2.5–4 mm diam; longest palea 2.8–3.3 mm; fruit 1.1–1.6 mm; disk corolla 1.1–1.7 mm, generally 5-lobed; leaves ± acute, mucronate ..... S. psilocarphoides


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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