Difference between revisions of "Phoebanthus"
Proc. Amer. Acad. Arts 51: 520. 1916.
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|family=Asteraceae | |family=Asteraceae | ||
|illustrator=Marjorie C. Leggitt | |illustrator=Marjorie C. Leggitt | ||
| + | |illustration copyright=Flora of North America Association | ||
|distribution=se United States. | |distribution=se United States. | ||
|reference=None | |reference=None | ||
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|publication year=1916 | |publication year=1916 | ||
|special status= | |special status= | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Latest revision as of 20:11, 5 November 2020
Perennials, 40–100+ cm (aerial stems from relatively slender, horizontal tubers). Stems erect, branched mostly distally (among heads, leafy). Leaves cauline; all opposite, or proximal opposite and distal alternate, or all alternate; sessile; blades (usually 1-nerved) linear-filiform or linear to linear-lanceolate, bases ± cuneate or rounded, margins entire (revolute), faces scabrous (adaxial) and sparsely hispid-scabrous, gland-dotted as well. Heads radiate, borne singly or (2–6) in open, ± corymbiform arrays. Involucres hemispheric to campanulate, 10–20 mm diam. Phyllaries persistent, 20–40+ in 2–3+ series (green, subequal, herbaceous, strigillose to hispid). Receptacles convex, paleate (paleae tan, conduplicate, trilobed or tricuspidate). Ray florets 10–20, neuter; corollas yellow (apices 2–4-lobed). Disc florets 40–100+, bisexual, fertile; corollas yellow, tubes shorter than narrowly campanulate throats, lobes 5, triangular. Cypselae (purplish black) obpyramidal, slightly compressed; pappi 0, or persistent or fragile, of 1–2 lacerate scales (over cypsela shoulders) plus 0–6 lacerate or bristlelike shorter scales. x = 17.
Distribution
se United States.
Discussion
Species 2 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Leaves linear to linear-lanceolate, the larger 3–7 mm wide; phyllaries appressed | Phoebanthus grandiflorus |
| 1 | Leaves linear-filiform, the larger 0.5–2 mm wide; phyllaries spreading | Phoebanthus tenuifolius |