Chorizanthe xanti var. leucotheca

Goodman

Ann. Missouri Bot. Gard. 21: 60. 1934.

Common names: Whitewater spineflower
Endemic
Synonyms: Chorizanthe xanti subsp. leucotheca (Goodman) Munz
Treatment appears in FNA Volume 5. Treatment on page 464. Mentioned on page 463.

Involucres densely white-pubescent.


Phenology: Flowering Apr–Jun.
Habitat: Sandy to gravelly places in saltbush communities, pinyon-juniper and pine-oak woodlands
Elevation: (60-)400-1300 m

Discussion

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.

Selected References

None.

Lower Taxa

None.

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lenticular +
pink +  and red +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
James L. Reveal +
Goodman +
alternating +
straight +
uncinate +
unequal +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
alternate +  and rosulate +
stipelike +
awn-tipped +  and simple +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
tomentose +  and pubescent +
oblong-ovate;ovate +
0.3cm;0.8cm +
sessile +  and short-petiolate +
persistent +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glandular +, woolly-floccose +, tomentose +, strigose +, villous +, hirsute +  and pubescent +
acerose +, acicular +, scale-like +, oblong-ovate +  and ovate +
reduced +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
disarticulating +, dichotomous +, branched +  and open +
erect +  and spreading +
just below the soil surface or and above the soil surface +  and spreading +
Whitewater spineflower +
(60-)400-1300 m +
curved +  and straight +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
white +  and pink or rose maroon or purple or yellow +
long-exserted +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy to gravelly places in saltbush communities, pinyon-juniper and pine-oak woodlands +
connate +  and free +
white-pubescent +
not ventricose +  and cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
deciduous +  and persistent +
nearly +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cylindric +
accrescent +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Apr–Jun. +
homostylous +  and 3-carpellate +
Ann. Missouri Bot. Gard. +
, +  and solid +
slender;stout +
not disarticulating +
decumbent to erect +  and prostrate +
prostrate +  and erect +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading +
Chorizanthe xanti subsp. leucotheca +
chambered +, , +  and solid +
Slender (?) +  and Stout (?) +
Chorizanthe xanti var. leucotheca +
Chorizanthe xanti +
variety +
lobed +  and laciniate +
coriaceous +
shallow +
less-prominent +
unequal +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
erect;infrequently spreading +
3 +, 2 +  and 1 +