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Montana Animal Field Guide

Montana Field Guides

Stalked-pod Locoweed - Oxytropis podocarpa

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Species of Concern

Global Rank: G4
State Rank: S1
* (see State Rank Reason below)

Agency Status
USFWS:
USFS: SENSITIVE
BLM:
MNPS Threat Rank: 3

External Links






State Rank Reason (see State Rank above)
Rare in Montana, where it is known from a small area of the Rocky Mountain Front. The remote habitat should limit the possibily of negative impacts.
  • Details on Status Ranking and Review
    Stalked-pod Locoweed (Oxytropis podocarpa) Conservation Status Review
    Review Date =
 
General Description
Stalked-pod Crazyweed is a perennial that usually forms small, dense cushions. Its naked stems are erect or prostrate and up to 7 cm long. The basal leaves are 2-5 cm long and pinnately divided into 9-27 narrowly lance-shaped leaflets. The herbage is covered with stiff, silvery hairs. The 1-2 purple flowers resemble pea flowers and are held erect at the top of the stem. The corolla is 12-17 mm long, and the tubular calyx is purplish and 2/3 the length of the corolla. The papery, inflated pod is 15-25 mm long and ovoid in outline.

Phenology
Flowering in June, fruiting late June-August.

Diagnostic Characteristics
This is our only purple-flowered Oxytropis with fewer than 4 flowers. Species of alpine Astragalus have leafy stems.

General Distribution
Mapped Observations

 


Distribution Comments
AB to CO; Baffin Island to NL (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 8
Number of Occurrences: 8

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

Recency

 

(Records associated with a range of dates are excluded from time charts)



Habitat
Gravelly ridges and slopes, often on limestone, in the alpine zone.

Ecological Systems Associated with this Species

References
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Citation for data on this website:
Stalked-pod Locoweed — Oxytropis podocarpa.  Montana Field Guide.  Montana Natural Heritage Program.  Retrieved on October 22, 2014, from http://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PDFAB2X0K0
 
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