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Montana Field Guide

Montana Field Guides

Wyeth Biscuitroot - Lomatium ambiguum


Global Rank: G4G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






 
General Description
Plants from an unbranched, tuberous or bulbous taproot. Herbage glabrous. Leaf blades obovate in outline, biternate or triternate; ultimate segments well-separated, linear 1–5 cm long, 2–5 mm wide, >5 times as long as wide; dilated petioles heavily veined. Umbels: peduncles ascending, 5–20 cm; rays unequal, 1–10 cm long; involucel absent. Flowers yellow. Mericarps lanceolate to narrowly elliptic, 5–8 mm long, glabrous; marginal wings up to 0.5 mm wide; oil tubes solitary in the intervals (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC, MT south to OR, UT and WY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 55

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Stony soil of grasslands, steppe, rock outcrops; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Wyeth Biscuitroot — Lomatium ambiguum.  Montana Field Guide.  .  Retrieved on , from