Montana Field Guide

Help

Montana Field Guides

Home - Other Field Guides
- Kingdom - Plants - Plantae
  - Division - Flowering Plants - Anthophyta
    - Class - Monocots - Monocotyledoneae
      - Order - Grasses/Sedges - Cyperales
        
        Family - Grasses - Poaceae
        
        Species - Weak Mannagrass - Torreyochloa pallida

Weak Mannagrass - Torreyochloa pallida

Other Names: Glyceria pauciflora, Puccinellia pauciflora, Puccinellia pallida var. pauciflora

Image Copyright and Usage Information

Native Species

Global Rank: G5
State Rank: S4
C-value: 7

Agency Status
USFWS:
USFS:
BLM:

External Links

General Description

Cool season, rhizomatous, perennial aquatic. Stems 40–70 cm. Leaves: blades 1–3 mm wide, mostly flat and lax to ascending; sheaths with overlapping margins; ligule membranous. Inflorescence an open panicle 6–12 cm long. Spikelets 4–7 mm long, with 4 to 7 florets; glumes similar to lemmas. Lemmas hairless or scabrous with a blunt tip, rounded on back and with prominent parallel venation; palea well developed. Disarticulation above glumes; unit of dispersal the floret (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments

Throughout western North America (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database

Number of Observations: 29

(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

Alkaline and fresh water aquatic, often at higher elevations, primarily in western MT. (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References

Web Search Engines for Articles on "Weak Mannagrass"

Take us with you!

Look for this PDF icon as you search and browse. Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level. To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Dragonflies / Damselflies

Ferns and allies

Conifers

Flowering Plants (Dicots)

Flowering Plants (Monocots)

Citation for data on this website:
Weak Mannagrass — Torreyochloa pallida. Montana Field Guide. Montana Natural Heritage Program. Retrieved on April 19, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PMPOA61030