Calycadenia oppositifolia

(Greene) Greene

Fl. Francisc. 4: 423. 1897.

Endemic
Basionym: Hemizonia oppositifolia Greene Bull. Torrey Bot. Club 9: 110. 1882
Treatment appears in FNA Volume 21. Treatment on page 274. Mentioned on page 270, 271.

Plants 10–30 cm; self-incompatible. Stems simple or sparingly branched (very slender), strigose and sparsely spreading-hairy. Leaves mostly or all opposite, 1–5 cm (little reduced distally), strigillose and ± long-hairy (at least proximally). Heads in congested, axillary glomerules (appearing whorled). Peduncular bracts lanceolate (flat, stiff, sometimes ± cylindric near apices), 4–10 mm (hispidulous, ± bristly and/or pectinate-fimbriate, especially proximally), apices ± rounded, tack-glands (0–) 1–5+. Phyllaries (often reddish) 4–7 mm, abaxial faces sometimes minutely scabrous, often sparsely bristly, tack-glands usually 0, sometimes 1+. Paleae 4–7 mm. Ray-florets 2–4; corollas white to reddish, tubes ca. 2 mm, laminae 6–9 mm (central lobes ± equaling or narrower than laterals, elliptic, nearly symmetric, widest near middles, sinuses equaling laminae). Disc-florets 4–20; corollas white to pink, ca. 6 mm. Ray cypselae ca. 3 mm, usually smooth, glabrous. Disc cypselae ca. 3 mm, ± appressed-hairy; pappi of 8–10 usually lanceolate, acuminate scales ca. 2 mm (often 2–4 shorter, blunt). 2n = 14.


Phenology: Flowering spring–early summer.
Habitat: Open, dry meadows, hillsides
Elevation: 50–900 m

Discussion

Calycadenia oppositifolia is known only from the Sierra Nevada foothills of Butte County. Its closest relative may be C. multiglandulosa.

Selected References

None.

Lower Taxa

None.
... more about "Calycadenia oppositifolia"
not tailed +, rounded +  and obtuse +
pale +  and dark +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
umbelliform +, spiciform +, paniculiform +, glomerulate +  and corymbiform +
indeterminate +  and determinate +
Robert L. Carr +  and Gerald D. Carr +
(Greene) Greene +
decurrent +
Hemizonia oppositifolia +
compound +  and simple +
linear to linear-elliptic +
lobed;usually spatulate;oblanceolate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
white +  and pink +
6 cm60 mm <br />0.06 m <br /> (?) +
hairy +  and glabrous +
fusiform +, clavate +, obpyramidal +, terete +, compressed +  and obcompressed +
fertile +  and bisexual +
appressed-hairy +
3 cm30 mm <br />0.03 m <br /> (?) +
fertile +  and bisexual +
50–900 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, dry meadows, hillsides +
spiciform +  and corymbiform +
in open to dense +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
urceolate;obconic;urceolate;obconic;hemispheric;fusiform;globose;ellipsoid;cylindric;campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
cauline +  and basal +
long-hairy +  and strigillose +
1 cm10 mm <br />0.01 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
toothed +  and entire +
2-carpellate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering spring–early summer. +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Fl. Francisc. +
obcompressed +
3 cm30 mm <br />0.03 m <br /> (?) +
convex;conic +
8 +  and 10 +
acuminate +  and lanceolate +
2 cm20 mm <br />0.02 m <br /> (?) +
exalbuminous +
branched +  and simple +
erect +  and spreading +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Calycadenia oppositifolia +
Calycadenia +
species +
cylindric +
2 cm20 mm <br />0.02 m <br /> (?) +
toothed +  and entire +
5 cm50 mm <br />0.05 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
7 +, 6 +, 5 +  and 4 +