E-Flora BC: Electronic Atlas of the Flora of British Columbia

Astragalus nutzotinensis Rouss.
Nutzotin milk-vetch (Nutzotin milkvetch)
Fabaceae (Pea family)

Introduction to Vascular Plants

© Bruce Bennett  Email the photographer   (Photo ID #23685)

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Distribution of Astragalus nutzotinensis
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Species Information

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General:
Mat-forming perennial herb from a branching stem-base and taproot; stems few to several, slender, prostrate, 10-40 cm long, minutely appressed-hairy with white and black, unbranched hairs.
Leaves:
Alternate, pinnately compound, 1-7 cm long; leaflets 9 to 15, elliptic to oblong, 2-8 mm long, grey-green, frequently with purplish spots, white appressed-hairy, the margins sometimes inrolled; stipules 3-6 mm long, fused at the base and clasping the stem.
Flowers:
Inflorescence an axillary raceme, on stalks 3-10 cm long, of 1 to 4 pea-like flowers; corollas cream with splashes of pink or purple, 12-18 mm long; calyces bell-shaped, black appressed-hairy to nearly glabrous, the tube 3-4.5 mm long, the teeth triangular to linear, about 1/2 as long as the tube.
Fruits:
Pods, at first straight but becoming curved in a semicircle, 3-5 cm long, minutely black appressed-hairy, 1-chambered, the stalk 4-10 mm long, jointed to the deciduous pod.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic gravelly terraces and outwash, rock outcrops and scree slopes from the montane to alpine zones; infrequent in extreme NW BC; N to AK and YT.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Astragalus nutzotinensis

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1675 1675 1675
Slope Gradient (%) 60 60 60
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
200 200 200
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
Modal Nutrient Regime
Class
Number of field plots
 species was recorded in:
1
Modal BEC Zone Class
BAFA
All BEC Zones (# of stations/zone) species was recorded in: BAFA(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References