Deinandra mohavensis

(D. D. Keck) B. G. Baldwin

Novon 9: 469. 1999.

EndemicConservation concern
Basionym: Hemizonia mohavensis D. D. Keck Madroño 3: 9. 1935
Treatment appears in FNA Volume 21. Treatment on page 283. Mentioned on page 280, 281.

Annuals, 10–100 (–150) cm. Stems solid. Leaves: proximal blades usually entire, sometimes serrate, faces pubescent and stipitate-glandular. Heads usually in glomerules or ± crowded, sometimes in open, paniculiform arrays. Bracts subtending heads usually overlapping proximal 0–1/2+ of each involucre. Phyllaries ± evenly stipitate-glandular, including margins and apices, usually with nonglandular, non-pustule-based hairs as well. Paleae in 1 series. Ray-florets 5; laminae deep yellow, 4–7 mm. Disc-florets 6, functionally staminate or bisexual; anthers yellow or brownish. Pappi of 5–9 (often ± connate, irregular), subulate to quadrate, erose scales 0.1–0.6 mm. 2n = 22.


Phenology: Flowering (May–)Jul–Oct(–Jan).
Habitat: Edges of streams, springs, seeps, in swales, in openings on drier surrounding slopes of chaparral, desert scrub, or woodlands, clayey, silty, or gravelly soils
Elevation: 800–1600 m

Discussion

Of conservation concern.

Deinandra mohavensis is known from the Peninsular Ranges (San Jacinto Mountains, Palomar Mountains, Anza Bench) and southernmost Sierra Nevada (Short Canyon, Jawbone Canyon region), and San Bernardino Mountains (where possibly extirpated). As noted by A. C. Sanders et al. (1997), D. mohavensis occurs in unusually mesic habitats for Deinandra (somewhat similar to situations where D. arida and D. floribunda occur) and has a highly disjunct distribution. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Deinandra mohavensis"
not tailed +, rounded +  and obtuse +
brownish +  and yellow +
pale +  and dark +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +  and open +
indeterminate +  and determinate +
Bruce G. Baldwin +  and John L. Strother +
(D. D. Keck) B. G. Baldwin +
decurrent +
Hemizonia mohavensis +
compound +  and simple +
linear to linear-elliptic +
toothed;pinnatifid;lance-linear;oblanceolate to linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
overlapping +
barbellulate +  and barbellate +
yellow +  and pale-yellow +
hairy +  and glabrous +
fusiform +, clavate +, obpyramidal +, terete +, compressed +  and obcompressed +
fertile +  and bisexual +
800–1600 m +
stipitate-glandular +  and pubescent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Edges of streams, springs, seeps, in swales, in openings on drier surrounding slopes of chaparral, desert scrub, or woodlands, clayey, silty, or gravelly soils +
non-pustule-based +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
urceolate;hemispheric;urceolate;hemispheric;campanulate;obconic +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
petiolate +  and sessile +
alternate +  and opposite +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
subulate +  and quadrate +
Flowering (May–)Jul–Oct(–Jan). +
stipitate-glandular +
3 +  and 35 +
alternate +  and opposite +
clavate +  and obcompressed +
setulose +  and glabrous +
flat;convex +
1 +  and 15 +
laciniate +, fringed +, fimbriate +, subulate +, setiform +, quadrate +, oblong +, linear +, lanceolate +  and lance-linear +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Deinandra mohavensis +
Deinandra +
species +
cylindric +
toothed +  and entire +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (100 cm1,000 mm <br />1 m <br />) +
shrub +  and subshrub +