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Montana Field Guide

Montana Field Guides

Tweedy's Gilia - Gilia tweedyi
Other Names:  Gilia sinuata var. tweedyi, Gilia inconspicua var. tweedyi

Potential Species of Concern

Global Rank: G4G5Q
State Rank: S3S4
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
Gilia tweedyi is locally common on the south and west sides of the Pryor Mountains in the drainages of the Bighorn and Clarks Fork of the Yellowstone rivers and is also known from Beaverhead County.
 
General Description
Stems erect, 5–25 cm, usually branched above. Herbage loosely tomentose, stipitate-glandular especially above. Leaves: basal oblanceolate, 2–5 cm long, deeply pinnately lobed, lobes lance-linear, mucronate; cauline few. Inflorescence terminal, leafy-bracteate cymes with ascending pedicels. Flowers: calyx 3–5 mm long, purple spotted, swollen in fruit; corolla funnelform, blue, with a yellow throat, tube 4–5 mm long; lobes ca. 1 mm long. Capsule 4–5 mm long with several seeds per locule (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Phenology
Blooming in May and June.

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 27

(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
Open, sandy soil in juniper woodlands, sagebrush and desert shrublands in the valleys and foothills.

Ecology
As an annual, population sizes may undergo large annual fluctuations and may respond positively to light or moderate levels of disturbance.

References
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Citation for data on this website:
Tweedy's Gilia — Gilia tweedyi.  Montana Field Guide.  .  Retrieved on , from