Ericameria nauseosa var. texensis

(L. C. Anderson) G. L. Nesom & G. I. Baird

Phytologia 75: 88. 1993.

Common names: Texas rabbitbrush
EndemicConservation concern
Basionym: Chrysothamnus nauseosus subsp. texensis L. C. Anderson SouthW. Naturalist 25: 197, figs. 1, 2. 1980
Treatment appears in FNA Volume 20. Treatment on page 69. Mentioned on page 62.

Plants 20–40(–50) cm. Stems whitish, leafy, loosely tomentose. Leaves grayish green; blades 1-nerved, linear, 10–35 × 1(–1.5) mm, faces loosely tomentulose. Involucres 8–11.5 mm. Phyllaries 16–23 (outer margins ciliate), apices erect, acute to obtuse (outer) to acuminate (inner), outer abaxial faces tomentose, glabrescent. Corollas 8.4–10.9 mm, tubes glabrous or sparsely puberulent, lobes 0.6–1.3 mm, glabrous; style appendages shorter than stigmatic portions. Cypselae glabrous; pappi 5.2–7.4 mm. 2n = 18.


Phenology: Flowering fall.
Habitat: Limestone cliffs and among boulders, less common on gravel alluvium of streambeds, associated with bigtooth maple, hornbeam, madrone, and yellow pine woodlands
Elevation: 1500–2100 m

Discussion

Of conservation concern.

Variety texensis is known from the Guadalupe Mountains.

Selected References

None.

Lower Taxa

None.
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(L. C. Anderson) G. L. Nesom & G. I. Baird +
Chrysothamnus nauseosus subsp. texensis +
Texas rabbitbrush +
N.Mex. +  and Tex. +
1500–2100 m +
Limestone cliffs and among boulders, less common on gravel alluvium of streambeds, associated with bigtooth maple, hornbeam, madrone, and yellow pine woodlands +
Flowering fall. +
Endemic +  and Conservation concern +
Chrysothamnus nauseosus +
Ericameria nauseosa var. texensis +
Ericameria nauseosa +
variety +