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Montana Field Guide

Montana Field Guides

Purple Dragon-head - Physostegia parviflora


Global Rank: G4G5
State Rank: S4

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

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General Description
Rhizomatous perennial herbs. Stems erect, 20–80 cm, usually simple. Leaves 3–10 cm long, sessile, lanceolate to oblanceolate, serrate; the lowest deciduous. Herbage glabrous below the inflorescence, non-aromatic. Inflorescence of bracteate, pedicellate flowers in a terminal, simple or branched, glandular puberulent raceme. Flowers: calyx 4–6 mm long, glandular,10-veined, the subequal 5 lobes shorter than the tube; corolla 10–15 mm long, lavender, bilabiate; upper lip hood-like, 3–5 mm long; lower lip reflexed down with 3 nearly equal lobes; stamens 4, included in the upper lip; style equally lobed (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
BC to MN south to OR, ID, WY and NE (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat
Moist, often stony soil on banks of streams, wetlands; valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Purple Dragon-head — Physostegia parviflora.  Montana Field Guide.  .  Retrieved on , from