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 ovatelanceolate, 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

V19-720-distribution-map.gif

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"
gray +  and white +
pannose-tomentose +  and tomentose +
subpannose +, tomentose +, arachnose +, glabrous +  and glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
paniculiform +, spiciform +, interrupted +  and continuous +
indeterminate +  and determinate +
Guy L. Nesom +
(Urban) Anderberg +
cuneate +  and more or less cordate +
Gnaphalium antillanum +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
spatulate;oblanceolate narrowly lanceolate linear-oblanceolate or linear +
2mm;3.5mm +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
Delicate everlasting +
actinomorphic +
purplish +, yellow +  and purplish-tipped +
flattened +  and oblong +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +, Va. +, South America +, Europe +  and New Zealand +
10–100 m +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
spatulate;oblanceolate narrowly lanceolate linear-oblanceolate or linear +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
winged +  and beaked +
dispersed +
Open sites in sandy soils, commonly in roadsides and other disturbed sites, stream and pond banks +
papilliform +
glomerulate-interrupted +
singly +  and aggregated +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
indeterminate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
homogamous +  and heterogamous +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
each +  and sessile +
campanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
basal +  and cauline +
rarely lanceovate +  and lanceolate +
ovatelanceolate +
2-carpellate +
persistent +
Flowering (Feb–)Mar–May, sometimes later with moisture. +
conic;more or less columnar +
exalbuminous +
erect +  and decumbent-ascending +
appendaged +  and truncate +
papillate +
Gamochaeta subfalcata +  and Gnaphalium subfalcatum +
Gamochaeta antillana +
Gamochaeta +
species +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
6 cm60 mm <br />0.06 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +