UW Burke Herbarium species comparison

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Delphinium viridescens

Delphinium glaucum
Delphinium viridescens

Wenatchee larkspur

pale larkspur
Habit Stout perennial from a short rhizome, the several hollow stems 8-12 dm. tall, glabrous below but with copious stalked, yellow glands above and throughout the inflorescence. Stout, glabrous and glaucous perennial from thick rhizomes, the several simple, hollow stems 10-20 dm. tall.
Leaves

Basal and lower cauline leaves long-petiolate, the blades up to 10 cm. broad, divided into 3 main wedge-shaped lobes, these once or twice cleft into oblong-rounded segments; mid-cauline leaves short-petiolate and overlapping, nearly erect, divided into narrow, acute segments, abruptly transitional to the lower leaves, but gradually transitional to the linear, entire, bract-like upper leaves.

Leaves numerous, gradually reduced upward, all divided over half their length into five broad, wedge-shaped segments, these sharply 2-3 times toothed; the blades of the lower leaves may be 15-20 cm. broad.
Flowers

Inflorescence usually a simple, narrow raceme, the pedicels shorter than the flowers;

sepals 5, purplish, but strongly streaked with yellow or greenish-yellow, oblanceolate, glandular, 7-11 mm. long;

spur thick, straight, 7-10 mm. long;

petals 4, yellowish or purple, the lower pair densely soft-hairy, equaling the sepals;

stamens numerous;

pistils 3.

Inflorescence a simple or compound raceme, rather elongate and loosely many-flowered;

sepals 5, deep blue-purple, oblong-elliptic, 6-12 mm. long, the spur straight, shorter than the blade of the upper sepal;

petals 4, small, pale blue;

stamens numerous;

pistils 3.
Fruits

Follicles 6-8 mm. long, erect, densely glandular-pubescent.

Follicles erect, 10-14 mm. long, glabrous.

Delphinium viridescens

Delphinium glaucum
Flowering time June-July July-September
Habitat Boggy meadowlands. Meadows and wet thickets, bogs, streambanks, and coniferous forest openings at middle elevations in the mountains.
Distribution
Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains of Chelan and Kittitas counties.
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and the Canadian Great Plains.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Threatened in Washington (WANHP) Not of concern
Sibling taxa
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. occidentale, D. stachydeum, D. sutherlandii, D. trolliifolium, D. xantholeucum
D. ajacis, D. basalticum, D. ×burkei, D. depauperatum, D. distichum, D. glareosum, D. leucophaeum, D. lineapetalum, D. menziesii, D. multiplex, D. nuttallianum, D. nuttallii, D. occidentale, D. stachydeum, D. sutherlandii, D. trolliifolium, D. viridescens, D. xantholeucum
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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