Difference between revisions of "Pectis angustifolia var. tenella"
Rhodora 79: 58. 1977.
Common names: Mexican chinchweed low pectis
Basionym: Pectis tenella de Candolle
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|publication year=1977 | |publication year=1977 | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Pectidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Pectidinae | ||
Revision as of 15:35, 18 September 2019
Annuals, 2–15 cm; herbage spicy-scented (lemon-scented in some Mexican populations). Leaves 10–40 mm, bases of distal blades not notably expanded. Peduncles 5–15 mm. Phyllaries linear, 3–5 mm, widest near middles, each with 1 subterminal oil-gland 0.2–0.5 mm plus smaller, submarginal oil-glands. Cypselae 2.5–4 mm; pappi of 0–7 awns or bristles 1–3 mm and/or coroniform. 2n = 24.
Phenology: Flowering Jun–Dec.
Habitat: Deserts, grasslands, arid woodlands, shrublands, roadsides
Elevation: 100–1100(–2500) m
Distribution
N.Mex., Tex., Mexico (Aguascalientes, Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Veracruz, Zacatecas).
Discussion
Variety tenella is widely distributed in the Chihuahuan Desert and adjacent regions. The isolated occurrence in northern New Mexico perhaps represents an introduction.
Selected References
None.
Lower Taxa
None.