Pectis humifusa
yerba de San Juan
prostrate (mat-forming, densely leafy), puberulent (in decurrent lines).
oblong-oblanceolate to obovate, 3–17 × 1.5–4 mm wide, margins with 2–6 pairs of setae 1–2 mm, faces glabrous (dotted with scattered, round oil-glands 0.1–0.2 mm).
1–12 mm.
campanulate.
5;
corollas 3.5–5 mm.
12–21;
corollas 2.5–3.5 mm (2-lipped).
distinct, obovate, 4.5–6 × 2–4 mm (faces densely dotted with scattered, circular oil-glands 0.05–0.2 mm).
borne singly or in congested, (leafy) cymiform arrays.
2.5–4 mm, mostly puberulent (ray cypselae abaxially glabrous);
ray pappi of 2–3 slender, aristate scales 1.5–2.5 mm plus 2–10 lacerate scales or bristles;
disc pappi of 4–15, antrorsely scabrid bristles or aristate scales 2–3 mm plus 0–15 bristles or scales.
= 72.
Pectis humifusa
Pectis humifusa has been reported once from Florida (D. J. Keil 1975c), where it is probably adventive. In the Lesser Antilles, it occurs most frequently in the salt spray zone near the seashore; on some islands, it occurs inland as well.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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