Plants 2-4 dm tall with several leaves and peduncles arising from a branching, woody root crown; leaves broadly ovate in outline, blades 2.5-20 cm long, 2.5-14 cm wide, ternately-pinnately decompound, ultimate divisions filiform, 0.5-5.6 cm long, 1-2 mm broad; peduncles 7-38 cm long, exceeding the leaves, scaberulent at summit; bracts none; rays 4-21, 6-20 mm long, spreading-ascending; bractlets linear to lanceolate, 2-5 mm long, free to slightly connate; pedicels 6-15, 1.5-5 mm long; calyx-teeth lanceolate; petals yellow; styles slender, spreading, stylopodium none; fruit oblong to ovoid-oblong, 2.4-8 mm long, 1.8-4 mm wide, lateral and dorsal ribs with prominent, corky wings to 1 mm tall; vittae large, mostly 1 in intervals, 2 on commissure (Mathias et al. 1969; Hartman, personal observation).
Mountains of western Texas (Altuda Mt., Glass Mts., Guadalupe Mts.) and southern and south-central New Mexico (Mathias et al. 1969).
Rocky places, bluffs, mountain summits, stream and canyon bottoms, mostly on limestone; 4,500-9,500 feet elevation.
Mathias, M.E., L. Constance and W.L. Theobald. 1969. Two new species of Umbelliferae from the southwesten United States. Madrono 20: 214-219.