Longstalk Springparsley

Cymopterus longipes S. Wats. Bot. King's Expl. 124. 1871
Peucedanum lapidosum M. E. Jones. Zoe 2: 246. 1891. Cymopterus lapidosus M. E. Jones, Contr. W. Bot. 8: 31. 1898. Aulospermum longipes Coult. & Rose, Contr. U. S. Nat. Herb. 7: 175. 1900. Aulospermum anguslum Osterhout, Bull. Torrey Club 31: 358. 1904. Cymopterus lapidosus var. deserti M. E. Jones, Contr. W. Bot. 12: 21. 1908. Cogswellia lapidosa Rydb. Fl. Rocky Mts. 627, 1064. 1917. Lomatium lapidosum Garrett, Spr. Fl. Wasatch ed. 4. 110. 1927.
Plants subcaulescent with the development of a conspicuous pseudoscape, 3-35 cm. high, glabrous, the mature pseudoscape 5-16 cm. long, usually fleshy; leaves ovate-oblong in general outline, excluding the petioles 1.5-8 cm. long, 1-7.5 cm. broad, somewhat fleshy, pallid, glaucescent, bipinnate, the leaflets sometimes confluent with a winged rachis, pinnately lobed, the lobes usually acute, mucronulate, 1-7 mm. long, 1-4 mm. broad, closely confluent; petioles 1-14 cm. long; peduncles equaling or exceeding the leaves, 3-26 cm. long; involucre wanting; involucel of several linear, acute to acuminate bractlets about equaling the flowers; fertile rays 3-8, spreading, 3-30 mm. long; pedicels 3-8 mm. long; flowers yellow; fruit oblong to ovoid-oblong, 5-9 mm. long, 3-6 mm. broad, the wings narrow at the base, the lateral broader than the body, the dorsal more or less obsolete; oil-tubes 3-7 in the intervals, 4—9 on the commissure; seedface deeply concave.
Type locality: Wahsatch Mountains near Salt Lake City, and on Antelope Island, Utah, 5000 feet, Watson 451.
Distribution: Colorado and central Utah to western Wyoming and adjacent Idaho (Nelson 4575. Payson &* Payson 2132).