provided by EOL authors
has a bioregional distribution that covers much of the western USA and western Canada. Specifically the range extends from California north to British Columbia and eastward to south-central Canada, North Dakota and Utah. Habitats include rocky, and often serpentine, slopes in chaparral; elevations of occurrence from 150 to 3000 meters above sea level.
Known by the common name Bigseed biscuitroot, this herb exhibits a taproot, and often a tuber base. The herbage is gray, generally tomentose to densely short-hairy, with a very abbreviated stem. The leaf petiole is 1.5 to 7.0 centimeters in length, with blades 2.5 to 15 cm long; blade shape is oblong to obovate. The leaves are pinnately or ternate-pinnately dissected. Flower corolla may be variously white, pale yellow, or purplish.
provided by North American Flora
Lomatium macrocarpum (H. & A.) Coult. & Rose, Contr. U. S Nat. Herb. 7: 217. 1900.
Ferula macrocarpa H. & A. Bot. Beech. Voy. 348. 1838.
Peucedanum macrocarpum Nutt.; T. & G. Fl. N Am. 1: 627. 1840.
Peucedanum macrocar pum var. ? eurycarpum A. Gray, Proc. Am. Acad. 8: 385. 1872.
Peucedanum eurycarpum Coult. & Rose, Rev. N. Am. Umbell. 61. 1888.
Lomatium macrocarpum var. arlemisiarum Piper, Bull. Torrey Club 29: 223. 1902.
Lomatium macrocarpum var. semivittatum Piper, Bull. Torrey Club 29: 224. 1902.
Lomatium Jlarum Suksd. Allg. Bot. Zeits. 12: 6. 1906.
Lomatium arlemisiarum Piper, Contr. U. S. Nat. Herb. 11: 423. 1906.
Cogswellia macrocarpa M. E. Jones, Contr. W. Bot. 12: 33. 1908.
Cogswellia arlemisiarum Coult. & Rose, Contr. U. S. Nat. Herb. 12: 449. 1909.
Cogswellia flava Coult. & Rose, Contr. U. S. Nat. Herb. 12: 449. 1909.
Cogswellia simulans Coult. & Rose, Contr. U. S. Nat. Herb. 12: 451. 1909.
Lomatium macrocarpum var. Douglasii Jepson, Madrono 1: 153. 1924.
Cogswellia macrocarpa var. arlemisiarum St. John, Fl. SE. Wash. 292. 1937.
Plants short-caulescent, 1-5 dm. high, purplish, especially below, from a slender or swollen taproot, densely tomentose to villous, or glabrate; leaves oblong to obovate in general outline, excluding the petioles 2.5-12 cm. long, ternate, then 2-3-pinnate, the ultimate divisions confluent, oblong to linear, 1-7 mm. long, 0.5-2 mm. broad, entire, mucronulate; petioles 1.5-7 cm. long, sheathing about to the middle, subscarious; peduncles exceeding the leaves; involucel of dimidiate, linear-lanceolate, acute bractlets, equaling to greatly exceeding the flowers, becoming reflexed in the mature plant; rays 5-25, spreading, 1-8.5 cm. long; pedicels 1-14 mm. long, spreading, the umbellets many-flowered ; flowers white, yellow, or purplish ; fruit narrowly oblong, 9-20 mm long, 2-8 mm. broad, the ovaries and young fruit glabrous to villous, the mature fruit glabrous or glabrate, the wings narrower than the body; oil-tubes 1, rarely 2 or 3, in the dorsal intervals, 1-3 in the lateral, sometimes obscure, 2-6 on the commissure.
Type locality: California, Douglas.
Distribution: Manitoba to North Dakota, west to British Columbia, south to central Nevada and California (Jones 3883, Nelson if Nelson 5733).
42a. Lomatium macrocarpum var. ellipticum (T. & G.) Jepson, Madrono 1: 153. 1924.
Peucedanum nudicaule var. ellipticum T. & G. Pacif. R. R. Rep. 2 2 : 121. 1855. Lomatium ellipticum Coult. & Rose, Contr. U. S. Nat. Herb. 7: 217. 1900. Cogswellia elliptica M. E. Jones, Contr. W. Bot. 12: 33. 1908.
Pedicels often longer, up to 16 mm. long; fruit oblong-oval, 16—18 mm. long, 6-10 mm. broad, glabrous, the wings twice as broad as the body. Type locality: "Round Valley, near the sources of the Sacramento, in the Sierra Nevada," California, Snyder.
Distribution: Northern Sierra Nevada, California.
- bibliographic citation
- Albert Charles Smith, Mildred Esther Mathias, Lincoln Constance, Harold William Rickett. 1944-1945. UMBELLALES and CORNALES. North American flora. vol 28B. New York Botanical Garden, New York, NY