Chaenactis glabriuscula var. orcuttiana

(Greene) H. M. Hall

Univ. Calif. Publ. Bot. 3: 192. 1907.

Common names: Orcutt’s pincushion
Conservation concern
Basionym: Chaenactis tenuifolia var. orcuttiana Greene W. Amer. Sci. 3: 157. 1887
Treatment appears in FNA Volume 21. Treatment on page 413. Mentioned on page 411.

Plants 10–30 cm; proximal indument grayish, sparsely arachnoid. Stems mostly 3–7 (–12), ± horizontal; branches proximal and distal. Leaves basal (withering) and cauline, mostly 2–5 cm; largest blades ± plane to 3-dimensional, succulent, mostly 2-pinnately lobed; primary lobes 2–7 pairs, ± congested, ultimate lobes ± plane to involute. Heads mostly 2–5 per stem. Peduncles 1–4 cm. Involucres ± hemispheric. Phyllaries: longest 4.5–6.5 (–9) × 1–2 mm; outer predominantly stipitate-glandular and ± villous in fruit. Florets: inner corollas 4.5–5.5 mm. Cypselae 4–5 mm; pappi of 4 scales in 1 series, longest scales mostly 1–2.5 mm, lengths 0.2–0.5 times corollas. 2n = 12.


Phenology: Flowering late Apr–Jun.
Habitat: Coastal dunes and bluffs
Elevation: 0–100 m

Distribution

V21-1036-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Of conservation concern.

Variety orcuttiana is known along the coast from near Santa Barbara to northwestern Baja California. It appears to intergrade with var. glabriuscula shortly inland.

Selected References

None.

Lower Taxa

None.

"-0.5timescorollas" is not declared as a valid unit of measurement for this property.

not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
James D. Morefield +
(Greene) H. M. Hall +
decurrent +
Chaenactis tenuifolia var. orcuttiana +
compound +  and simple +
lobed;ovate;oblanceolate;ovate;oblanceolate;linear;deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
Orcutt’s pincushion +
actinomorphic +
stipitate-glandular +  and hairy +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Mexico (Baja California) +
0–100 m +
strigose +  and densely sericeous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Coastal dunes and bluffs +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hemispheric +
lobed +  and plane +
cauline +  and basal +
2 cm20 mm <br />0.02 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
deltate +  and more or less lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
dentate to pinnatifid or palmatifid +  and entire +
villous +  and stipitate-glandular +
acute +  and blunt +
2-carpellate +
persistent +
coroniform +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
glabrescent +, lanuginose +, arachnoid-sericeous +, villous +  and stipitate-glandular +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering late Apr–Jun. +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
5 +  and 21 +
0.45 cm4.5 mm <br />0.0045 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
remote +  and more or less congested +
Univ. Calif. Publ. Bot. +
bearing subulate enations +, hairy +  and bristly +
knobby;convex;more or less flat +
distinct +
unequal +
exalbuminous +
unequal +
Conservation concern +
7 (?) +  and 12 (?) +
3 +  and 7 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Chaenactis glabriuscula var. orcuttiana +
Chaenactis glabriuscula +
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 plane;involute +
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 />) +