Draba asprella var. stelligera

O. E. Schulz in H. G. A. Engler

in H. G. A. Engler, Pflanzenr. 89[IV,105]: 106. 1927.

EndemicConservation concern
Synonyms: Draba asprella var. kaibabensis C. L. Hitchcock
Treatment appears in FNA Volume 7. Treatment on page 293.

Fruit valves puberulent, trichomes 2–4-rayed, 0.1–0.2 mm.


Phenology: Flowering Apr–Jul.
Habitat: On and around limestone and sandstone rock outcrops in pine-oak and pinyon-juniper communities
Elevation: 1500-2400 m

Discussion

Of conservation concern.

Variety stelligera is known from Coconino, Gila, and Yavapai counties in northern and central Arizona. The difference between vars. kaibabensis and stelligera rests on trichome density and the proportion of simple versus branched hairs on the leaves. These features are highly variable and we find no dependable characteristics separating populations on the North Rim of the Grand Canyon from those to the south.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

ovate +  and oblong +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
O. E. Schulz in H. G. A. Engler +
petiolate +  and subsessile +
appendaged +  and unappendaged +
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
not +  and auriculate +
0.8 cm8 mm <br />0.008 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
lobed +, toothed +  and entire +
oblanceolate;spatulate or obovate +
much smaller +  and reduced +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
urceolate +, campanulate +  and tubular +
scapose +  and branched +
sessile +  and petiolate +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
1500-2400 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
not basally +  and dilated +
actinomorphic +
orange;purple;orange;purple;pink;white;yellow +
spreading +, ascending +  and erect +
linear +, oblanceolate +, spatulate +, obovate +, subsaccate +, not saccate +, oblong +  and ovate +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
inflated +, plane +, ovoid-ellipsoid +  and oblong +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
On and around limestone and sandstone rock outcrops in pine-oak and pinyon-juniper communities +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
dentate +  and entire +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
pale-yellow +
rudimentary +
oblanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Flowering Apr–Jul. +
trinucleate +  and 3(-11)-colpate +
in H. G. A. Engler, Pflanzenr. +
ebracteate;(15-)30-75-flowered +
ascending +  and erect +
slender +
not flexuous +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
reduced +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
terete +, plane +, subglobose +, ovoid +, suborbicular +, linear +, oblong +, elliptic +, lanceolate +  and ovate +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
terete +, plane +, subglobose +, ovoid +, suborbicular +, linear +, oblong +, elliptic +, lanceolate +  and ovate +
Endemic +  and Conservation concern +
tetradynamous +
procumbent +  and decumbent +
prostrate +  and decumbent +
usually erect +  and ascending +
subsessile +, sessile +  and petiolate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
persistent +
distinct +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
Draba asprella var. kaibabensis +
Draba asprella var. stelligera +
Draba asprella +
variety +
short-stalked +, simple +  and stalked +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
cruciform +  and forked +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
coiled +, 1-7-veined +  and veined +
anastomosing +
scapose +  and not +
1.1 cm11 mm <br />0.011 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
horizontal +  and divaricate-ascending +
0.3 cm3 mm <br />0.003 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +