Monographs Details: Lomatium graveolens var. clarkii S.L.Welsh
Authority: Welsh, Stanley L. 1990. Utah novelties in Carex (Cyperaceae) and Lomatium (Umbelliferae). Mem. New York Bot. Gard. 64: 123-128.
Family:Apiaceae
Description:Distribution and Ecology - Sagebrush, bullgrass,mountain bush, Douglas fir, limber pine, andspruce-fir communities, often in rocky places,mostly on limestone and other basic substrates,sometimes in raw snowflush areas, at 1980 to3200 m , in Cache, Davis, Duchesne, Millard,Rich, Salt Lake, Sanpete, Sevier, Summit, Tooele,Utah, Wasatch, and Weber counties, Utah,and adjacent Idaho, and westem Wyoming

Discussion:

Inter varietatibus alpino (Wats.) Dom & Hartman et graveolenti intermedia, a var. graveolenti floribus purpureis et fructibus minoribus et a var. alpino floribus et fructibus majoribus et alls latioribus differt.

TYPE. Utah. Washington County: Zion Canyon, West Rim Trail, S end of Horse Pasture Plateau, T.40S., R.10W., S.29,32,33, 20 May 1989, L. C. Higgins 18293 (holotype BRY; isotypes CAS, N Y , POM, R M , US, UT, UTC).

Additional Specimens Examined. Utah. Washington County: Zion Canyon, West Rim Trail, Horse Pasture Plateau, Carmel Fma., ca. 8 mi due N of Springdale, sandy limestone with oak, serviceberry and pine, 7000 ft, T.40S., R.IOW., S.29, 2 Jun 1989, S. L. Welsh, S. L. Clark & L. Hays 24313, 24317 (both BRY); Zion Canyon, near West Rim Spring, Ponderosa pine community mainly in Navajo Sst., ca. 7000 ft, T.40S., R.IOW., S.33, 1 May 1989, S. L. Clark & S. L. Welsh 5237 (BRY, NY); Zion Canyon, along West Rim Trail, Horse Pasture Plateau, 7300 ft, T.40S., R.IOW., S.32, 22 Jun 1965, N . H Holmgren et aL 1984 (BRY); Zion Canyon, Church Mesa, 2 mi W of Zion Lodge, S of Phantom Valley, near head of Coat Pits Wash, 18 Jul 1988, K. Thome et al 6425 (BRY); Zion Canyon, Kayenta Fma., Kolob Section, hanging garden below Kolob Arch, ca. 5 mi SE of Kolob Canyon visitor center, ca. 6000 ft, T.39S., R.12W., S.l, 25 May 1989, L. C. Higgins 18500 (BRY).

The variety is named for Dr. Stephen L. Clark who first drew m y attention to the distinctions of the taxon. Dr. Clark is the plant taxonomist at Weber State College in Ogden, Utah, where he has taught a generation of students. H e is an excellent collector and collaborator.

L. graveolens var. graveolens

Peucedanum graveolens Wats, (type from the Wasatch Moimtains).

Peucedanum kingii Wats.; Lomatium kingii (Wats.) Cronq.

Lomatium nuttallii auct., non (Gray) Macbr

Distribution:United States of America North America|