Pectis prostrata
Pectis angustifolia
spreading chinchweed, spreading cinchweed
lemonscent, lemonscented cinchweed, limoncillo
prostrate to ascending (often mat-forming, densely leafy, especially distally), puberulent (in lines or throughout).
erect or ascending, glabrous or puberulent.
linear to narrowly oblanceolate, 10–40 × 1.5–7 mm, margins with 4–12 pairs of setae 1–3 mm, faces glabrous (abaxial densely dotted with round oil-glands 0.1–0.3 mm).
linear, 10–45 × 1–3 mm, margins with 2–5 pairs of bristles 1–2 mm, faces glabrous (dotted with oil-glands 0.2–0.7 mm).
1–2 mm.
1–20 mm.
campanulate, cylindric, or ellipsoid.
narrowly campanulate or cylindric.
5;
corollas 2.5–3.5 mm (scarcely surpassing phyllaries).
8;
corollas 3–5(–7) mm (glandular puberulent or nearly glabrous).
3–17;
corollas 1.8–2.5 mm (2-lipped).
(7–)10–20;
corollas 2.5–3.5 mm (sometimes weakly 2-lipped, glandular puberulent).
coherent (falling together), oblong to obovate, 5–8 × 1–3 mm (often dotted in submarginal rows and sometimes along midribs with elliptic oil-glands 0.1–0.3 mm).
distinct, linear or narrowly oblanceolate, 2.5–5.5 × 0.5–1 mm (dotted subterminally with 1 or 2 swollen oil-glands and submarginally with 2–5 pairs of smaller oil-glands).
borne singly or in congested, (leafy) cymiform arrays.
in congested, cymiform arrays.
2.5–4.5 mm, strigillose;
pappi of 2 (ray) or 5 (disc) lanceolate scales 1.5–2.5 mm.
2.5–4 mm, strigillose (hair tips straight, forked);
pappi coroniform and/or of 0–7 scabrid awns or bristles 1–2 mm.
= 24.
Pectis prostrata
Pectis angustifolia
The development of roads and highways has created ideal habitats for Pectis prostrata. Its range appears to be expanding along the coasts of Florida; it was discovered in Louisiana relatively recently. It can be expected to spread along the Gulf Coast and perhaps northward along the Atlantic Coast as well. Autogamy has apparently assisted P. prostrata to spread rapidly as suitable new habitats have become available.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Bases of distal leaves notably expanded (often partially concealing peduncles); pappi usually coroniform, 0.1–0.3 mm (plus 1–7 awns or bristles in some Texas populations); herbage lemon-scented | var. angustifolia |
1. Bases of distal leaves seldom expanded; pappi either of 0–4 awns 0.5–1(–2) mm and sometimes additionally coroniform, or of 0–7 awns or bristles 1–3 mm and/or coroniform; herbage usually spicy-scented | → 2 |
2. Phyllaries widest near apices, each with subterminal oil gland 0.5–1 mm; pappi usually less than 1 mm; annuals or perennials; c Texas (Edwards Plateau) | var. fastigiata |
2. Phyllaries widest near middles, each with a subterminal oil-gland less than 0.5 mm; pappi often 1+ mm; annuals; s Texas, Mexico | var. tenella |
LA Plants
WildflowerSearch
iNaturalist
USDA Plants Database
KS Wildflowers
