Chaenactis cusickii

A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. ed. 2. 1(2): 452. 1886.

Common names: Morning brides Cusick’s pincushion
EndemicConservation concern
Treatment appears in FNA Volume 21. Treatment on page 410. Mentioned on page 400, 408, 409.

Plants 3.5–10 (–15) cm; proximal indument grayish, sparsely arachnoid, glabrescent. Stems mostly 1–5; branches mainly proximal. Leaves basal (withering) and cauline (not notably smaller or sparser distally), 1–4 cm; largest blades ± oblanceolate, plane, ± succulent, not lobed (margins entire or distally ± crenate). Heads mostly 1–5 (–12) per stem. Peduncles 0.5–2.5 cm, glabrescent distally (sparsely arachnoid early; bracts 1–2, leaflike, surpassing heads). Involucres ± hemispheric to campanulate. Phyllaries: longest 6–9 (–10) mm (surpassed by florets); outer (uniformly) sparsely arachnoid to glabrescent in fruit, not stipitate-glandular (inner apically brownish-villosulous), apices usually erect, blunt, ± rigid. Florets: corollas (diurnal) white to pinkish, 3–7 mm (± equaling cypselae; anthers exserted); peripheral corollas ± erect, actinomorphic, scarcely enlarged. Cypselae 4–6 mm; pappi of (8–) 10–14 scales in 2–3 gradually unequal series, longest scales 1.5–3.5 mm. 2n = 12.


Phenology: Flowering late Apr–Jun.
Habitat: Light-colored shrink-swell clay soils from volcanic ash and tuff, semiarid shrublands
Elevation: 700–1300(–1800) m

Discussion

Of conservation concern.

Chaenactis cusickii is known from Malheur County, Oregon, and adjacent Owyhee and Canyon counties, Idaho. Its relationship to other species is obscure.

Lower Taxa

None.

"longest" is not a number.

... more about "Chaenactis cusickii"
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 +
A. Gray in A. Gray et al. +
decurrent +
compound +  and simple +
lobed;ovate;oblanceolate;ovate;oblanceolate;linear;deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
Morning brides +  and Cusick’s pincushion +
actinomorphic +
white +  and pinkish +
stipitate-glandular +  and hairy +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
Idaho +  and Oreg. +
700–1300(–1800) m +
strigose +  and densely sericeous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Light-colored shrink-swell clay soils from volcanic ash and tuff, semiarid shrublands +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
less hemispheric;campanulate +
not lobed +, plane +  and oblanceolate +
cauline +  and basal +
1 cm10 mm <br />0.01 m <br /> (?) +  and 4 cm40 mm <br />0.04 m <br /> (?) +
deltate +  and more or less lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
dentate to pinnatifid or palmatifid +  and entire +
not stipitate-glandular +, sparsely arachnoid +  and glabrescent +
acute +  and blunt +
2-carpellate +
persistent +
coroniform +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering late Apr–Jun. +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5 +  and 21 +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
glabrescent +  and arachnoid +
in A. Gray et al., Syn. Fl. N. Amer. ed. +
bearing subulate enations +, hairy +  and bristly +
knobby;convex;more or less flat +
moseley1994a +
distinct +
10 +  and 14 +
exalbuminous +
unequal +
Endemic +  and Conservation concern +
5 (?) +  and 12 (?) +
usually erect +  and ascending +
1 +  and 5 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Chaenactis cusickii +
Chaenactis sect. Chaenactis +
species +
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 />) +
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 />) +