Jepson eFlora
Key to families | Table of families and genera

Key to Stylocline

View taxon page for Stylocline

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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