Encelia virginensis

A. Nelson

Bot. Gaz. 37: 272. 1904.

Endemic
Synonyms: Encelia frutescens var. virginensis (A. Nelson) S. F. Blake
Treatment appears in FNA Volume 21. Treatment on page 121. Mentioned on page 119.
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Shrubs, 50–150 cm. Stems with slender branches from bases, hairy, developing fissured barks. Leaves cauline; petioles 2–7 mm; blades gray-green, narrowly ovate to deltate, 12–25 mm, apices acute or obtuse, faces sparsely canescent and strigose. Heads borne singly. Peduncles canescent. Involucres 9–13 mm. Phyllaries narrowly ovate. Ray-florets 11–21; corolla laminae 8–15 mm. Disc corollas yellow, 5–6 mm. Cypselae 5–8 mm; pappi usually 0, rarely of 1–2 bristlelike awns. 2n = 36.


Phenology: Flowering Apr–Jun, Dec.
Habitat: Desert flats, rocky slopes, roadsides
Elevation: 500–1500 m

Distribution

V21-294-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Utah.

Discussion

In the mountains of the eastern Mojave Desert in California, Encelia virginensis may intergrade with E. actoni at higher elevations, probably as a result of hybridization. Plants of E. virginensis in New Mexico may be adventive.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Encelia virginensis"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
obtuse;acute +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Curtis Clark +
A. Nelson +
bristlelike +
1 +  and 2 +
coroniform +
fissured +
cuneate +
compound +  and simple +
narrowly ovate;deltate +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
brown-purple +  and yellow +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hairy +  and glabrous +
obovate +  and cuneate +
fertile +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, N.Mex. +  and Utah. +
500–1500 m +
strigose +  and canescent +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Desert flats, rocky slopes, roadsides +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
triangular +
2-carpellate +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering Apr–Jun, Dec. +
18 +  and 30 +
unequal +  and subequal +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Encelia frutescens var. virginensis +
Encelia virginensis +
species +
expanded +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +