Flora of North America species comparison

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Chorizanthe xanti var. xanti

Chorizanthe xanti var. leucotheca
Photo is of parent taxon

pinyon spineflower, riverside spineflower, Xantus' spineflower
Photo is of parent taxon

riverside spineflower, white-bract spineflower, whitewater spineflower
Involucres

thinly pubescent.

densely white-pubescent.
2n

= 38, 42.

Chorizanthe xanti var. xanti

Chorizanthe xanti var. leucotheca
Phenology Flowering Apr–Jul. Flowering Apr–Jun.
Habitat Sandy to gravelly places in mixed grassland, saltbush and chaparral communities, pine-oak woodlands Sandy to gravelly places in saltbush communities, pinyon-juniper and pine-oak woodlands
Elevation (60-)300-1600 m ((200-)1000-5200 ft) (60-)400-1300 m ((200-)1300-4300 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Variety xanti is found in the Coast Ranges from western Merced, eastern Monterey, and San Benito counties south to the Transverse Ranges of northern Santa Barbara and Ventura counties, thence eastward along the northern foothills of the San Gabriel and San Bernardino mountains to extreme southwestern San Bernardino County, and then northward through the Tehachapi Mountains of central and eastern Kern County onto the foothills of the Sierra Nevada, going as far north as Madera County. In 1935, a disjunct population was sampled near Benton Station in southern Mono County (Robinson & Lindner 20, RSA) but it has not been recollected.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety leucotheca is infrequent and localized in the eastern San Bernardino Mountains of San Bernardino County and on the eastern slopes of the San Jacinto Mountains in Riverside County. The dense tomentum on the involucres completely obscures the reddish hue of the involucral surface.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 5, p. 464. FNA vol. 5, p. 464.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Chorizanthe > subg. Amphietes > sect. Ptelosepala > Chorizanthe xanti Polygonaceae > subfam. Eriogonoideae > Chorizanthe > subg. Amphietes > sect. Ptelosepala > Chorizanthe xanti
Sibling taxa
C. xanti var. leucotheca
C. xanti var. xanti
Synonyms C. xanti subsp. leucotheca
Name authority unknown Goodman: Ann. Missouri Bot. Gard. 21: 60. (1934)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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