Coreopsis douglasii

(de Candolle) H. M. Hall

Univ. Calif. Publ. Bot. 3: 140. 1907.

Endemic
Basionym: Leptosyne douglasii de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 531. 1836
Treatment appears in FNA Volume 21. Treatment on page 189.

Annuals, 5–15 (–25+) cm. Leaf-blades simple or pinnately lobed, terminal lobes filiform, 0.5–1+ mm wide. Peduncles 5–15 (–20+) cm. Calyculi of (3–) 5 linear bractlets 3–5 (–12) mm, not ciliolate near bases. Phyllaries (5–) 8, ovate, 5–7+ mm. Ray-florets (5–) 8 (–9+); laminae 5–12 (–16+) mm. Disc-florets 8–60 (–100+); corollas 2.8–3.5 mm. Cypselae ± oblanceolate, 3.5–4+ mm, not marked adaxially with red dots or dashes, wings usually thin, sometimes corky-thickened, faces usually smooth, rarely tuberculate, not hirtellous. 2n = 24.


Phenology: Flowering Mar–May.
Habitat: Shale and serpentine slopes, sandy flats
Elevation: (150–)300–1000 m

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Coreopsis douglasii"
not tailed +, rounded +  and obtuse +
dark +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(de Candolle) H. M. Hall +
smooth +  and ciliate or barbed +
1 +  and 2 +
decurrent +
Leptosyne douglasii +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
barbellulate +  and barbellate +
not ciliolate +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
winged +  and thin-margined +
oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
(150–)300–1000 m +
not hirtellous +
tuberculate +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Shale and serpentine slopes, sandy flats +
discoid +  and radiate +
in open , more or less corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
less globose;cylindric +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
distal +  and middle +
flabellate +  and obovate +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
sessile +  and petiolate +
opposite +  and alternate +
cauline +  and basal +
less deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
lanceolate;linear +
persistent +
coroniform +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering Mar–May. +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Univ. Calif. Publ. Bot. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Coreopsideae +  and Undefined (tribe Undefined) subtribe Petrobiinae +
Coreopsis douglasii +
Coreopsis sect. Leptosyne +
species +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
toothed +  and entire +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
shrub +  and subshrub +
not ciliolate +
less corky +  and chartaceous +
lobed +  and toothed +
corky-thickened +
membranous +