Difference between revisions of "Pectis linearifolia"
Symb. Antill. 5: 276. 1907.
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|common_names=Florida chinchweed | |common_names=Florida chinchweed | ||
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| + | |code=E | ||
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name=Pectis linearifolia | name=Pectis linearifolia | ||
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|authority=Urban | |authority=Urban | ||
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|publication title=Symb. Antill. | |publication title=Symb. Antill. | ||
|publication year=1907 | |publication year=1907 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_544.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Pectidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Pectidinae | ||
Latest revision as of 21:13, 5 November 2020
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). Heads borne singly or in congested, (leafy) cymiform arrays. Peduncles 0–1 mm. Involucres narrowly campanulate to cylindric. Phyllaries distinct, linear or linear-oblanceolate, 5–6 × 1–1.5 mm (dotted with scattered, elliptic oil-glands 0.4–0.5 mm). Ray florets 5; corollas 4.5–5.5 mm. Disc florets 4–10; corollas 2.5–3 mm (2-lipped). 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.
Phenology: Flowering mostly Aug–Dec.
Habitat: Open sites, sandy-gravelly soils with grasses and other herbs
Elevation: 0–50 m
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.
Selected References
None.