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Montana Field Guide

Montana Field Guides

Pale-spiked Lobelia - Lobelia spicata

Species of Concern
Native Species

Global Rank: G5
State Rank: S2?
(see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

External Links






State Rank Reason (see State Rank above)
Rare and peripheral in Montana, where it is known from a few locations in the northeast corner of the state. Additional data on population levels and trends are needed. Unclear if any of the documented occurrences are subject to negative impacts or disturbances.
 
General Description
Pale-spiked Lobelia is an herbaceous perennial with unbranched stems that are 2-8 dm high. The oblong, lance-shaped leaves are 5-10 cm long, have toothed margins and short petioles, and become smaller up the stem. Foliage is glabrous to sparsely short-hairy. Flowers are 7-12 mm long and are born on short, 2-5 mm long stalks in a sparingly branched, narrow, crowded inflorescence. Each flower has 5 narrow sepals that are 5-9 mm long and a light blue, tubular, 4-10 mm long corolla that flares into a spreading 2-lobed upper lip and a 3-lobed lower lip. The ovary is below the base of the corolla and matures into a nearly globose capsule that is 3-5 mm high.

Phenology
Flowering in late July - early August.

Diagnostic Characteristics
Lobelia kalmii is confined to very wet soils. Other species of Campanulaceae with Lobelia-like flowers are annuals and are usually found in wetlands.

Species Range
Present
 


Range Comments
SK to QC, south to TX, LA, MS and GA (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 12

(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
Moist meadows on the plains.

Ecological Systems Associated with this Species

References
  • Additional ReferencesLegend:   View Online Publication
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    • Heidel, B.L., S.V. Cooper and C. Jean. 2000. Plant species of special concern and plant associations of Sheridan County, Montana. Report to U.S. Fish and Wildlife Service. Montana Natural Heritage Program, Helena, Montana. 96 p.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Pale-spiked Lobelia — Lobelia spicata.  Montana Field Guide.  .  Retrieved on , from