Pectis linearifolia |
Pectis linifolia |
|
---|---|---|
Florida chinchweed, Florida cinchweed |
romero-macho |
|
Habit | Annuals, 4–40 cm; herbage lemon-scented. | |
Stems | decumbent to erect (very leafy), glabrous or puberulent (in decurrent lines). |
|
Leaves | linear, 10–50 × 1–3 mm, margins with 2–6 pairs of setae, faces glabrous (abaxial dotted submarginally with round oil-glands 0.2–0.5 mm). |
|
Peduncles | 0–1 mm. |
|
Involucres | narrowly campanulate to cylindric. |
|
Ray florets | 5; corollas 4.5–5.5 mm. |
|
Disc florets | 4–10; corollas 2.5–3 mm (2-lipped). |
|
Phyllaries | distinct, linear or linear-oblanceolate, 5–6 × 1–1.5 mm (dotted with scattered, elliptic oil-glands 0.4–0.5 mm). |
|
Heads | borne singly or in congested, (leafy) cymiform arrays. |
|
Cypselae | 2.25–3.25 mm, puberulent; pappi (ray and disc similar) of 2–5 antrorsely barbed bristles or awns 1.5–2.5 mm plus shorter, barbellate scales. |
|
2n | = 48. |
|
Pectis linearifolia |
Pectis linifolia |
|
Phenology | Flowering mostly Aug–Dec. | |
Habitat | Open sites, sandy-gravelly soils with grasses and other herbs | |
Elevation | 0–50 m (0–200 ft) | |
Distribution |
FL
|
AZ; FL; Mexico; Central America; South America; West Indies; Pacific Islands |
Discussion | Reports of Pectis linearifolia from Jamaica were based on misidentifications of diminutive, short-peduncled individuals of P. glaucescens (D. J. Keil 1986). In Florida, P. linearifolia and P. glaucescens are largely allopatric; they occasionally occur in mixed populations. No hybrids are known. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 226. | FNA vol. 21, p. 230. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Name authority | Urban: Symb. Antill. 5: 276. (1907) | Linnaeus: Syst. Nat. ed. 10, 2: 1221. (1759) |
Web links |