Gamochaeta antillana

(Urban) Anderberg

Opera Bot. 104: 157. 1991.

Common names: Delicate everlasting
Basionym: Gnaphalium antillanum Urban Repert. Spec. Nov. Regni Veg. 13: 482. 1915
Synonyms: Gamochaeta subfalcata (Cabrera) Cabrera Gnaphalium subfalcatum Cabrera
Treatment appears in FNA Volume 19. Treatment on page 436. Mentioned on page 433, 437.

Annuals, 6–40 cm; taprooted. Stems erect to decumbent-ascending, loosely arachnose-tomentose. Leaves basal and cauline, basal usually withering before flowering, blades spatulate to oblanceolate, narrowly lanceolate, linear-oblanceolate, or linear, 2–3(–4) cm × 2–3.5(–5) mm (distal rarely folded along midveins), faces concolor, loosely tomentose. Heads initially in uninterrupted, cylindro-spiciform arrays (1–)3–4(–10) cm × 8–12 mm (pressed), usually becoming glomerulate-interrupted in late flowering (equally leafy-bracted throughout, bracts linear to narrowly lanceolate, smaller distally). Involucres campanulate, 2.5–3 mm, bases sparsely arachnose. Phyllaries in 3–4(–5) series, outer ovate-lanceolate, lengths 1/2–2/3 inner, apices (sometimes purplish-tinged) narrowly to broadly acute, inner usually purple (immediately beyond stereome and along proximal margins), oblong, laminae usually purple (at stereome and along proximal margins), apices (whitish, tinged with brown) rounded-obtuse. Florets: bisexual 3–5; all corollas usually purple distally. Cypselae (tan) 0.4–0.5 mm.


Phenology: Flowering (Feb–)Mar–May, sometimes later with moisture.
Habitat: Open sites in sandy soils, commonly in roadsides and other disturbed sites, stream and pond banks
Elevation: 10–100 m

Distribution

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Ala., Ark., Fla., Ga., La., Miss., N.C., Okla., S.C., Tenn., Tex., Va., South America, Europe, New Zealand.

Discussion

Gamochaeta antillana and G. calviceps have been combined in concept and often misidentified as Gamochaeta falcata (Lamarck) Cabrera; the latter name applies to a South American species that has not been recorded from the flora area. Gamochaeta subfalcata, which has been attributed to the United States (e.g., S. E. Freire and L. Iharlegui 1997), almost certainly applies to the same species as G. antillana.

Selected References

None.

Lower Taxa

None.
... more about "Gamochaeta antillana"
Guy L. Nesom +
(Urban) Anderberg +
Gnaphalium antillanum +
Delicate everlasting +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +, Va. +, South America +, Europe +  and New Zealand. +
10–100 m +
Open sites in sandy soils, commonly in roadsides and other disturbed sites, stream and pond banks +
Flowering (Feb–)Mar–May, sometimes later with moisture. +
Gamochaeta subfalcata +  and Gnaphalium subfalcatum +
Gamochaeta antillana +
Gamochaeta +
species +