USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Aquatic and Wetland Vascular Plants of the Northern Great Plains

41. Lamiaceae, the Mint Family

3. Physostegia Benth. -- Obedient plant

2. Physostegia parviflora Nutt. ex A. Gray


Stems 2-8 dm tall, from a slender caudex or short rhizome. Leaves lanceolate to oblong-lanceolate, rarely ovate, 4-12 cm long, 0.7-2 cm wide, acute to obtuse at the tip, remotely serrate or dentate to subentire, rounded to subcordate and clasping at the base. Racemes 5-10 cm long; bracts ovate to lanceolate or elliptic-lanceolate, to about 1/2 as long as the calyx. Calyx 3-5(6) mm long in flower, to 7 mm long in fruit, sparsely stipitate glandular, the teeth triangular, 1-1.5 mm long; corolla lavender to purple-lavender, 9-16 mm long, puberulent and usually with stipitate glands. Nutlets 2.1-3.3 mm long. Jul--Aug. Wet meadows, shores and stream banks; rare, with records from nc ND and w NE; (sw Man., n ND, s Sask.; also w NE, WY and w MT to n OR, WA and B.C.).
GIF- Distribution Map

Map key


Previous Section -- Physostegia ledinghammii (Boivin) Cantino
Return to Family -- Lamiaceae - The Mint Family
Next Section -- Physostegia virginiana (L.) Benth.

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/species/pparvif.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:45:57 EST
Reston, VA [vaww55]