Pycnanthemum
Family: Lamiaceae
Pycnanthemum image
Paul Rothrock
  • Gleason & Cronquist
  • Resources
Vascular plants of NE US and adjacent Canada
Cal 10-13-nerved, often 2-lipped, the lobes shorter than the tube; cor ±distinctly bilabiate, the upper lip entire or merely emarginate, the lower 3-lobed; stamens 4, commonly exsert, straight and divergent, the pollen-sacs parallel; rhizomatous herbs with linear to ovate lvs and small fls in crowded or head-like cymes terminating the stem and branches or also sessile in the axils of the upper lvs; cor purple to white, the lower lip commonly purple-spotted. Fl in mid- and late summer. (Koellia) 20, N. Amer. Spp. 4-6 confluent.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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Species within inventory project: Intermountain Regional Herbarium Network
Pycnanthemum albescens
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Pycnanthemum beadlei
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Pycnanthemum californicum
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Pycnanthemum curvipes
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Pycnanthemum flexuosum
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Pycnanthemum floridanum
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Pycnanthemum incanum
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Pycnanthemum lanceolatum
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Pycnanthemum linifolium
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Pycnanthemum loomisii
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Pycnanthemum monotrichum
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Pycnanthemum montanum
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Pycnanthemum muticum
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Pycnanthemum nudum
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Pycnanthemum pilosum
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Pycnanthemum puberulum
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Pycnanthemum pycnanthemoides
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Pycnanthemum setosum
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Pycnanthemum tenuifolium
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Pycnanthemum torreyi
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Pycnanthemum verticillatum
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Pycnanthemum virginianum
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Pycnanthemum viridifolium
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Pycnanthemum × clinopodioides
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