Lomatium nudicaule

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LONU GDCarr flw good.jpg
LONU SpencerAlexander sdl 2012 (15).JPG
  • Kingdom Plantae – Plants
  • Subkingdom Tracheobionta – Vascular plants
  • Superdivision Spermatophyta – Seed plants
  • Division Magnoliophyta – Flowering plants
  • Class Magnoliopsida – Dicotyledons
  • Subclass - Rosidae
  • Order - Apiales
  • Family - Apiaceae – Carrot family
  • Genus - Lomatium Raf. – desert parsley
  • Species - Lomatium nudicaule (Pursh) J.M. Coult. & Rose – barestem biscuitroot


Cogswellia nudicaulis (Pursh) M.E. Jones

Lomatium platyphyllum


Widely distributed throughout Washington; British Columbia south to California, east to Idaho and Utah.[1]


Dry, open areas; common in shrub-steppe, but found in mountain meadows.[1]


LONU DennisPlank sd .jpg

Seed sample from: 2011

Average Measurement: 10.7 x 4.9 x 0.9

Measurement Range: L: 9 – 12.5, W: 4 – 5.75, D: 0.5 – 1.1


Shape: Seeds widely winged and schizoid. Hilum puckered.

Color: Wings and ribs off-white to tan. Hilum is darker. Outer seed face has light to dark brown center, bisected by three tan ribs that cross longitudinally from hilum to opposite apex. Inner seed face is bisected by one major rib, and then has darker brown stripes mixed with tan stripes.

Surface: Seeds smooth and matte.

Latitudinal Cross Section: elliptical LONU lat.png

Longitudinal Cross Section: elliptical LONU long.png


Seeds benefit from stratification, slow to establish. Seeds germinated within 1-2 weeks. [2]

Plant Description

General: Stout perennial herb from a taproot, glabrous, strongly glaucous; stems solitary to several, 20-90 cm tall. [2]

Leaves: Mostly basal, large, compound, 1-3 times divided; ultimate segments 3-30, entire or shallowly toothed, 2-9 cm long, 10-60 (rarely 4) mm wide, veiny, often stalked. [2]

Flowers: Inflorescence of compound umbels; flowers yellow, small, stalks of unequal length; involucels lacking. [2]

Bloom Time

Early Spring [3]


  • Seeds chewed for colds [4]
  • Poultice of chewed seeds applied or chewed seeds blown on head for headaches.[4]
  • Infusion of seeds taken by pregnant women to insure an easy delivery.[5]


  1. 1.0 1.1 http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Lomatium&Species=nudicaule
  2. 2.0 2.1 2.2 2.3 Propagation protocol for production of container Lomatium nudicaule Pursh plants; Corvallis Plant Materials Center, Corvallis, Oregon. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 17 October 2006). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.
  3. http://www.pnwflowers.com/flower/lomatium-nudicaule
  4. 4.0 4.1 Turner, Nancy Chapman and Marcus A. M. Bell 1971 The Ethnobotany of the Coast Salish Indians of Vancouver Island, I and II. Economic Botany 25(1):63-104, 335-339 (p. 89)
  5. Turner, Nancy Chapman and Marcus A. M. Bell 1973 The Ethnobotany of the Southern Kwakiutl Indians of British Columbia. Economic Botany 27:257-310 (p. 276)