Aletes acaulis (Torr.) Coult. & Rose

Aletes acaulis (Torr.) Coult. & Rose, Rev. N. Am Umbell. 126. 1888.
Deweya 1 acaulis Torr. Pacif. R.R. Rep. 4': 94. 1857. Oreosciadium acaule A. Gray, Proc. Am. Acad. 7: 343. 1868. Seseli Hallii A. Gray, Proc. Am. Acad. 8: 288. 1870. Musenium Grecnei A. Grav, Proc. Am. Acad. 8: 387. 1872. Carum (?) Hallii S. Wats. Bibl. Ind. 416. 1878. Zizia Hallii Coult. & Rose. Bot. Gaz. 12: 137. 1887. Aletes obovata Rydb. Bull. Torrey Club 31 : 573. 1904.
Plants 5-35 cm. high; leaves oblong in general outline, excluding the petioles 2-10 cm. long, 1-4 cm. broad, 1-2-pinnate, the leaflets lanceolate to orbicular, acute, confluent, pinnately lobed and spinulose-dentate, 4-10 mm. long, 5-15 mm. broad, sometimes puberulent on the veins and ciliate; petioles 1.5-15 cm. long; peduncles 5-27 cm. long, longer than the leaves, occasionally puberulent at the base of the umbel; bractlets of the involucel lanceolate to linear, acute, 2-3 mm. long, membranaceous and sometimes ciliate, connate at the base; rays 8-15, subequal, 5-30 mm. long, spreading to reflexed, sometimes puberulent; pedicels 1-2 mm. long; fruit oblong, 4-7 mm. long, about 2 mm. broad, the 2 or 3 dorsal and the lateral ribs corkywinged, the wings obtuse; an accessory oil-tube in the apex of each rib.
Type locality: "In crevices of rocks near Santa Antonita, New Mexico," Bigelow.
Distribution: Mountains of Colorado through New Mexico to western Texas and Chihuahua (Bethel if Clokey 4218, Hall & Harbour 221).