Chaenactis carphoclinia var. peirsonii

(Jepson) Munz

Man. S. Calif. Bot. 601. 1935.

Common names: Peirson pincushion
EndemicConservation concern
Basionym: Chaenactis peirsonii Jepson Madroño 1: 259. 1929
Treatment appears in FNA Volume 21. Treatment on page 403. Mentioned on page 402.

Plants mostly 40–60 cm. Leaves ± basal, longest 7–10 cm; petioles dilated proximally, ± indurate.


Phenology: Flowering Mar–Apr.
Habitat: Open, rocky or gravelly desert slopes and flats, shrublands
Elevation: 0–200 m

Discussion

Of conservation concern.

Variety peirsonii is known from the eastern Santa Rosa Mountains and adjacent Salton Sea area near the common border of Imperial, Riverside, and San Diego counties. Unlike var. attenuata, in which it has sometimes been included, var. peirsonii is geographically and morphologically well defined.

Selected References

None.

Lower Taxa

None.

"longest" is not a number.

not tailed +, rounded +  and obtuse +
connate +  and distinct +
erect +  and incurved +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
James D. Morefield +
(Jepson) Munz +
decurrent +
Chaenactis peirsonii +
compound +  and simple +
lobed;ovate;oblanceolate;ovate;oblanceolate;linear;deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
Peirson pincushion +
actinomorphic +
white +  and pinkish +
stipitate-glandular +  and hairy +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
0–200 m +
strigose +  and densely sericeous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Open, rocky or gravelly desert slopes and flats, shrublands +
in more or less cymiform arrays +, singly +  and radiant +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
obconic;more or less cylindric or hemispheric +
lobed +, deltate +  and more or less ovate +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
longest +
7 cm70 mm <br />0.07 m <br /> (?) +  and 10 cm100 mm <br />0.1 m <br /> (?) +
deltate +  and more or less lanceolate +
dentate to pinnatifid or palmatifid +  and entire +
acute +  and acuminate-aristate +
2-carpellate +
persistent +
coroniform +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Mar–Apr. +
5 +  and 21 +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not arachnoid +  and farinose +
Man. S. Calif. Bot. +
bearing subulate enations +, hairy +  and bristly +
knobby;convex;more or less flat +
distinct +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Chaenactis carphoclinia var. peirsonii +
Chaenactis carphoclinia +
variety +
cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
less crowded +  and remote +
toothed +  and entire +
70 cm700 mm <br />0.7 m <br /> (200 cm2,000 mm <br />2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (70 cm700 mm <br />0.7 m <br />) +