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Montana Field Guide

Montana Field Guides

Winged-loosestrife - Lythrum alatum


Global Rank: G5
State Rank: SU
* (see State Rank Reason below)

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

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State Rank Reason (see State Rank above)
Not conclusively documented from the state though likely to be found in extreme eastern Montana.
 
General Description
Stems 4-angled, 40–120 cm. Herbage glabrate. Leaves lanceolate to ovate, 15–60 mm long. Inflorescence of solitary, short-pedicellate flowers in axils of reduced upper leaves. Flowers: hypanthium puberulent, 5–7 mm long; petals 6, 3–6 mm long; stamens 6 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety alatum.

Range Comments
MT to QC south to TX, MS, FL. One unconfirmed collection from Carter County (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Winged-loosestrife — Lythrum alatum.  Montana Field Guide.  .  Retrieved on , from