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Florida chinchweed, Florida cinchweed

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

Phenology Flowering mostly Aug–Dec.
Habitat Open sites, sandy-gravelly soils with grasses and other herbs
Elevation 0–50 m (0–200 ft)
Distribution
from FNA
FL
[WildflowerSearch map]
[BONAP county map]
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.)

Source FNA vol. 21, p. 226.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Pectidinae > Pectis
Sibling taxa
P. angustifolia, P. cylindrica, P. filipes, P. glaucescens, P. humifusa, P. imberbis, P. linifolia, P. longipes, P. papposa, P. prostrata, P. rusbyi, P. ×floridana
Name authority Urban: Symb. Antill. 5: 276. (1907)
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