Centromadia pungens subsp. pungens

unknown
Common names: Common spikeweed
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 unknown Hemizonia pungens var. septentrionalis (D. D. Keck) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 277.
Revision as of 15:36, 18 September 2019 by FNA>Volume Importer

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

V21-677-distribution-map.gif

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.
Bruce G. Baldwin +  and John L. Strother +
unknown +
Hartmannia pungens +
Common spikeweed +
Ariz. +, Calif. +, Idaho +, Nev. +, N.Y. +, Oreg. +, Wash. +  and Mexico (Baja California). +
0–1200(–1800) m +
Open, ± alkaline flats, depressions, waterway banks and beds, in grasslands, saltbush scrub, disturbed sites (e.g., fallow fields) +
Flowering Apr–Nov. +
Man. Bot. San Francisco, +
Conservation concern +
Centromadia maritima +, Centromadia pungens subsp. maritima +, Centromadia pungens subsp. septentrionalis +, Hemizonia pungens subsp. maritima +, Hemizonia pungens subsp. septentrionalis +  and Hemizonia pungens var. septentrionalis +
Centromadia pungens subsp. pungens +
Centromadia pungens +
subspecies +