Cymopterus glomeratus DC.

Cymopterus acaulis (Pursh) Raf. Herb. Raf. 40. 1833
Selinum acaule Pursh, Fl. Am. Sept. 732. 1814.
Thapsia glomerata Nutt. Gen. 1: 184. 1818.
Cymopterus glomeralus DC. Prodr. 4: 204. 1830.
Ferula ? Palmella Hook. Fl. Bor. Am. 1: 268. 1832.
Coloplera Parryi Coult. & Rose, Rev. N. Am. Umbell. 50. 1888.
Cymopterus Parryi M. E. Jones, Zoe 4: 48. 1893.
Cymopterus glomeralus var. Parryi M. E. Jones. Proc. Calif. Acad. II. 5: 688. 1895.
Cymopterus Leibergii Coult. & Rose, Contr. U. S. Nat. Herb. 7: 182. 1900.
Cymopterus glomeralus var. Leibergii M. E. Jones, Contr. W. Bot. 12: 25. 1908.
Cymopterus lucidus Osterhout, Muhlenbergia 6: 59. 1910.
Plants acaulescent or subcaulescent, not cespitose, with the development of a pseudoscape 3-30 cm. high, the mature pseudoscape 1 .5-7 cm. long, glabrous; leaves ovate to oblong-obovate in general outline, excluding the petioles 1-9 cm. long, 0.5-7 cm. broad, bipinnate, green, the leaflets entire to pinnately lobed, the lobes acute or somewhat obtuse, 0.5-30 mm. long, 0.5-5 mm. broad; petioles 1-14 cm. long; peduncles usually shorter than or equaling the leaves; involucre wanting, or rarely vestigial; involucel of usually linear, entire, obtuse, often membranaceous bractlets, occasionally scarious-margined, equaling or exceeding the flowers; umbels compact, the fertile rays 3-5, 2-10 mm. long; pedicels about 1 mm. long; flowers white; fruit ovoid to ovoid-oblong, 5-10 mm. long, 3-8 mm. broad, the wings constricted at the base and sometimes acuminate at the apex, narrower than or equaling the body, the dorsal wings 1-3, similar to the lateral ; oil-tubes 31 7 in the intervals, 51 3 on the commissure, sometimes solitary at the wing-base; strengthening cells present or wanting.
Type locality: "On the alluvion of the Missouri, from the river Naduet to the Mahas, in upper Louisiana," Bradbury.
Distribution: Central .Saskatchewan and western Minnesota to southern Colorado and eastern Oregon {Carr 6, Nelson 4623, 6978, Stevens 232).