Facelis retusa |
Facelis |
|
---|---|---|
annual trampweed |
trampweed |
|
Habit | Annuals, 3–30 cm (taprooted or fibrous-rooted, not stoloniferous). | |
Stems | usually with decumbent to nearly procumbent branches arising from bases, 3–30 cm, loosely tomentose. |
usually 1, erect to decumbent. |
Leaves | crowded; blades 7–20(–30) × 1.5–4 mm, apices truncate-apiculate to retuse. |
cauline; alternate; sessile; blades spatulate or oblanceolate to lance-linear, bases ± cuneate, margins entire (usually revolute), faces bicolor, abaxial gray, tomentose, adaxial green, glabrous. |
Involucres | narrowly ovoid or nearly cylindric [campanulate or broadly turbinate], 8–11 mm. |
|
Receptacles | flat, smooth, epaleate. |
|
Peripheral (pistillate) florets | 10–25 (more numerous than bisexual); corollas whitish to purplish. |
|
Phyllaries | in 3–5+ series, usually greenish to stramineous, sometimes purplish (hyaline, stereomes not glandular), unequal, chartaceous toward tips. |
|
Heads | clusters subtended by bractlike leaves. |
disciform, usually in ± capitate to loose, spiciform arrays, rarely borne singly (in leaf axils). |
Cypselae | 1.6 mm; pappi 10–11 mm. |
obovoid, ± compressed (2–3-nerved), faces silvery sericeous (hairs not myxogenic); pappi persistent, of 20–30+, distinct or basally connate, ± plumose bristles in 1 series. |
Inner | (bisexual) florets 3–5; corollas white to purplish. |
|
x | = 14. |
|
2n | = 14. |
|
Facelis retusa |
Facelis |
|
Phenology | Flowering Mar–Jun. | |
Habitat | Lawns, roadsides, pastures, other disturbed sites, usually on sandy soils | |
Elevation | 0–100 m (0–300 ft) | |
Distribution |
AL; AR; FL; GA; KS; LA; MS; NC; OK; SC; TX; VA; South America; Australia
|
North America; South America; Africa; Australia |
Discussion | Species 3 or 4 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 19, p. 443. | FNA vol. 19, p. 442. |
Parent taxa | ||
Subordinate taxa | ||
Synonyms | Gnaphalium retusum | |
Name authority | (Lamarck) Schultz-Bipontinus: Linnaea 34: 532. (1866) | Cassini: Bull. Sci. Soc. Philom. Paris 1819: 94. (1819) |
Web links |