CARROT FAMILY 277 



linear; flowers white or purple; fruit glabrous, narrowly cuneate, 6-11 mm. long; lateral wings 

 broadest at the apex, dorsal wings usually 3, similar to the lateral. 



Rocky ridges, Upper Sonoran Zone and Arid Transition Zones; Nevada and western Utah, reaching 

 the eastern border of California. Type locality: Carson City, Nevada. March-May. 



4. Cymopterus Gilmanii Morton. Oilman's Cymopterus. Fig. 3623. 



Cymopterus Gilmanii Morton, Journ. Wash. Acad. 25: 309. 1935. 



Plant subcaulescent, glabrous, 1.2-2.3 dm. high. Leaves orbicular-reniform, 2.5-^.5 cm. 

 long, ternate ; leaf-divisions deltoid or triangular, spinulose-dentate, acuminate, confluent, up 

 to 8-18 mm. long; peduncles exceeding the leaves; rays about 8, 1-2 cm. long; involucre none; 

 bractlets several, distinct, linear-subulate, exceeding the purple or purplish-white flowers ; 

 fruit broadly oval, 7-8 mm. long, the wings broader than the body, narrowed or broadened at 

 the base. 



Desert canyons, Sonoran Zones; mountains about Death Valley, California and Nevada. Type locality: 

 Echo Canyon, Funeral Mountains, California. April. 



5. Cymopterus corrugatus M. E. Jones. Corrugate-winged Cymopterus. 



Fig. 3624. 



Cymopterus corrugatus M. E. Jones, Amer. Nat. 17 : 973. 1883. 



Plants acaulescent, or with a pseudoscape, glabrous, 3-10.5 cm. high. Leaves oblong-ovate, 

 0.5-4 cm. long, pinnate; leaflets pinnately lobed, the lobes obtuse; peduncles shorter than to 

 equaling the leaves; rays 4-10, 0.2-1 cm. long; involucre none; bractlets several, scarious to 

 submembranaceous, entire, shorter than the white flowers ; fruit ovoid-oblong, 3-5 mm. long, the 

 wings thin and corrugated, constricted at the base, narrower than the body. 



Rocky ridges. Upper Sonoran Zone; southeastern Oregon to northern Nevada. Type locality: Humboldt 

 Lake, Nevada. April-May. 



6. Cymopterus acaulis (Pursh) Raf. Mahas Cymopterus. Fig. 3625. 



Selinum acaule Pursh, Fl. Amer. Sept. 732. 1814. 



Thapsia glomcrata Nutt. Gen. 1: 184. 1818. 



Ferula t Palmclla Hook. Fl. Bor. Amer. 1: 268. 1832. 



Cymopterus acaulis Raf. Herb. Raf. 40. 1833. 



Coloptera Parryi Coult. & Rose, Rev. N. Amer. Umbell. 50. 1888. 



Cymopterus Leibergii Coult. & Rose, Contr. U.S. Nat. Herb. 7 : 182. 1900. 



Plants acaulescent or subacaulescent, not cespitose, with the development of a pseudoscape 

 0.3-3 dm. tall. Leaves ovate to oblong-obovate, 1-9 cm. long, 0.5-7 cm. broad, bipinnate; leaf- 

 lets entire to pinnately lobed, the lobes acute or somewhat obtuse, 0.5-30 mm. long; petiole 

 1-14 cm. long; peduncles usually shorter than or equaling the leaves; rays 3-5, 0.2-1 cm. long; 

 involucre wanting, or rarely vestigial ; bractlets usually linear, entire, obtuse, often mem- 

 branaceous, occasionally scarious-margined, equaling or exceeding the white flowers ; fruit 

 ovoid to oblong-ovoid, 5-10 mm. long, the wings constricted at base and sometimes acuminate 

 at apex, narrower than or equaling the body; dorsal wings 1-3, similar to the lateral; oil- 

 tubes 3-17 in the intervals. 



Dry plains and hills. Arid Transition and Upper Sonoran Zones; eastern Oregon to central Saskatchewan 

 and western Minnesota to southern Colorado and Utah. Type locality: "On the alluvion of the Missouri, from 

 the river Naduet to the Mahas, in upper Louisiana." April-June. 



Cymopterus Watsonii (Coult. & Rose) M. E. Jones, Contr. West. Bot. No. 12: 25. 1908. {Aulo- 

 spermum Watsonii Coult. & Rose, Contr. U.S. Nat. Herb. 7: 176. 1900.) Subacaulescent with a con- 

 spicuous pseudoscape, scabrous-puberulent ; leaves ovate-oblong, 3-8 cm. long, bipinnate, fleshy, pallid, and 

 glausescent; leaflets pinnately lobed, the lobes linear, 1-2 mm. long, confluent; peduncles exceeding the leaves; 

 rays several, 1-3 cm. long; involucre wanting; bractlets linear, acute, about equaling the white flowers; fruit 

 ovoid to ovoid-oblong, 4-6 mm. long, 3-6 mm. broad; wings narrowed at the base. This species, previously 

 known only from northern Nevada, has recently been collected in southeastern Oregon. Type locality: Battle 

 Mountain, Nevada. 



7. Cymopterus panamintensis Coult & Rose. Panamint Indian Parsnip. 



Fig. 3626. 



Cymopterus panamintensis Coult. & Rose, Contr. U.S. Nat. Herb. 4: 116. 1893. 



Plants acaulescent, glabrous, 0.5-4 dm. high. Leaves broadly ovate-oblong, 1-14 cm. long, 

 ternate, then 2-3-pinnate; leaf-divisions linear, sharply acute or short-acuminate, spinulose, 

 distinct, 1-5 mm. long; peduncles exceeding the leaves, rather stout; rays 5-15, 1-6.5 cm. long; 

 involucre none; bractlets several, more or less united, linear-attenuate, equaling or exceeding 

 the greenish flowers; fruit oblong-ovoid, 6-10 mm. long, the wings equaling or exceeding the 

 body, thin, enlarged at the base ; seed-face concave. 



Rocky situations, Upper Sonoran and Arid Transition Zones; desert ranges bordering Death Y^"l^' 

 California. Type locality: "near Pete's garden in Johnson Canyon," Panamint Mountains, California. March- 

 May. 



Cymopterus panamintensis var. acutif6Hus (Coult. & Rose) Munz, Man. S. Calif. 357. 1935. (Aulo- 

 spermum panamintense var. acutifotium Coult. & Rose, Contr. U.S. Nat. Herb. 7: 177. 1900.) Leaf-divisions 

 more remote; ultimate divisions acute, not spinulose, 3-20 mm. long. Mojave Desert, near Barstow and the 

 Newberry and Grapevine Mountains, California. Type locality: Newberry Springs, Mojave Desert, California. 



