UW Burke Herbarium species comparison

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Delphinium basalticum

Delphinium occidentale
Delphinium basalticum

basaltic larkspur

western larkspur

Delphinium basalticum

Delphinium occidentale
Flowering time May-June June-August
Habitat Basaltic cliff faces, outcropping, and exposed slopes. Montane meadows and thickets, bogs, and streamsides.
Distribution
Occurring in the Columbia River Gorge in Washington; southcentral Washington and adjacent Oregon.
[BONAP county map]
Occurring east of the Cascades crest in southeastern Washington; Washington to northeastern Nevada, east to Montana, Wyoming, Colorado, and Utah.
[BONAP county map]
Origin Native Native
Conservation status Review Group 2 in Washington (WANHP) Not of concern
Sibling taxa
D. ajacis, D. ×burkei, D. depauperatum, D. distichum, D. glareosum, D. glaucum, D. leucophaeum, D. lineapetalum, D. menziesii, D. multiplex, D. nuttallianum, D. nuttallii, D. occidentale, D. stachydeum, D. sutherlandii, D. trolliifolium, D. viridescens, D. xantholeucum
D. ajacis, D. basalticum, D. ×burkei, D. depauperatum, D. distichum, D. glareosum, D. glaucum, D. leucophaeum, D. lineapetalum, D. menziesii, D. multiplex, D. nuttallianum, D. nuttallii, D. stachydeum, D. sutherlandii, D. trolliifolium, D. viridescens, D. xantholeucum
Subordinate taxa
D. occidentale var. occidentale
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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