UW Burke Herbarium species comparison

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Delphinium xantholeucum

Delphinium sutherlandii

yellow-white larkspur

sutherland's larkspur
Habit Rather stout perennial from a thick, branching, fibrous root, the single stem 3-8 dm. tall, glabrous below but glandular at least in the inflorescence.
Leaves

Leaves few, glabrous and glaucous, mostly on the lower 1/5 of the stem;

leaf blades 2-7 cm. broad, 3-4 times dissected, the ultimate segments linear, 1-2 mm. broad.

Flowers

Inflorescence compound, the main raceme as long as the rest of the stem, loosely many-flowered;

pedicels elongate, spreading;

sepals 5, creamy-white to greenish-white, green-tipped, the lateral pair oblong, about 10 mm. long;

spur 12-15 mm. long;

petals 4, small, creamy-yellow;

stamens numerous;

pistils 3.

Fruits

Follicles 15-22 mm. long, erect, glabrous to glandular-pubescent.

Delphinium xantholeucum

Delphinium sutherlandii
Flowering time April-June April-June
Habitat Dry, grassy hillsides and ponderosa pine forests. Dry meadows and open conifer forests.
Distribution
Occurring east of the Cascades crest in Washington, where endemic to Okanogan, Chelan, and Douglas counties.
[WildflowerSearch map]
[BONAP county map]
Occurring in northeastern Washington; southeastern British Columbia and adjacent Washington, east across northern Idaho to northwestern Montana.
[BONAP county map]
Origin Native Native
Conservation status Not of concern 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. viridescens
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. trolliifolium, D. viridescens, D. xantholeucum
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Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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