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Montana Field Guide

Montana Field Guides

Spiny-spore Quillwort - Isoetes echinospora
Other Names:  Isoetes tenella

Status Under Review
Native Species

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

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 9

External Links






State Rank Reason (see State Rank above)
5 collections at MONTU from western Montana.
  • Details on Status Ranking and Review
    Spiny-spore Quillwort (Isoetes echinospora) Conservation Status Review
    Review Date =
 
General Description
Plants aquatic. Leaves 6–15 cm long with a blunt tip. Sporangia 3–6 mm long. Megaspores 0.4–0.6 mm wide (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
In MT in Flathead, Lake, Missoula and Rivalli counties; Circumboreal, south to CA, UT, CO, OH, NJ (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 10

(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
Unconsolidated mud in shallow water of lakes and sloughs; valleys to lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Spiny-spore Quillwort — Isoetes echinospora.  Montana Field Guide.  .  Retrieved on , from