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Montana Field Guide

Montana Field Guides

Marsh Grass-of-Parnassus - Parnassia palustris


Global Rank: G5
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

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General Description
Stems mostly solitary, 10–35 cm with 1, mostly cordate-clasping bract. Leaf blades ovate to reniform, truncate to cordate, 8–15 mm long. Flowers: calyx lobes 5–9 mm long; petals oblong, 8–12 mm long with 7 to 9 veins; staminodia obovate with 5 to 7 capitate lobes. Capsule 7–12 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Lesica (2012) treats all of our plants as being variety montanensis (Fernald & Rydb.) C.L. Hitchc.

Species Range
Present
 


Range Comments
Circumboreal south to CA, UT, CO, ND and MN (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 17

(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
Fens, wet meadows, thickets, often in moss; plains, valleys to subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Marsh Grass-of-Parnassus — Parnassia palustris.  Montana Field Guide.  .  Retrieved on , from