familyAsteraceae
genusCentromadia
speciesCentromadia pungens
subspeciesCentromadia pungens subsp. pungens
Difference between revisions of "Centromadia pungens subsp. pungens"
Common names: Common spikeweed
Illustrated
Synonyms: Centromadia maritima Greene Centromadia pungens subsp. maritima (D. D. Keck) B. G. Baldwin Centromadia pungens subsp. septentrionalis (Greene) D. D. Keck Hemizonia pungens subsp. maritima D. D. Keck Hemizonia pungens subsp. septentrionalis Hemizonia pungens var. septentrionalis (D. D. Keck) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 277.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae | ||
Latest revision as of 20:13, 5 November 2020
Leaves: margins sometimes ciliate, faces glabrous, scabrous, or hirsute, midribs sometimes bristly. Paleae often exserted, apices ± attenuate, spine-tipped. 2n = 18, 20.
Phenology: Flowering Apr–Nov.
Habitat: Open, ± alkaline flats, depressions, waterway banks and beds, in grasslands, saltbush scrub, disturbed sites (e.g., fallow fields)
Elevation: 0–1200(–1800) m
Distribution
Ariz., Calif., Idaho, Nev., N.Y., Oreg., Wash., Mexico (Baja California).
Discussion
Subspecies pungens is circumscribed broadly to include subsp. maritima and subsp. septentrionalis based on morphologic and molecular data (B. G. Baldwin, unpubl.). As treated here, Centromadia pungens subsp. pungens occurs widely in central and northern California, and it is putatively introduced in southwestern California and outside the state.
Selected References
None.
Lower Taxa
None.
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