Publication: Proc. Biol. Soc. Wash. 27: 61. 1914.

Origin: Native

Herbarium search: CPNWH

Notes: On 10/14/2009, the PLANTS database shows this species occuring in WA based on a specimen from Clallam County at WS that is cited in a 1906 manuscript in Contributions from the U.S. National Herbarium. This is most likely a misidentified specimen given the known range of this species (east of the Cascades in WA, OR; Intermountain West).FNA3 shows this species barely reaching into southeastern WA, but it is unclear as to which herbarium has the specimen showing this occurrence.

FNA3: "Populations of Delphinium stachydeum are widely scattered in isolated mountain ranges surrounded by desert or grassland. The species has been reported (visual sightings) from northwestern Utah; no specimens have been seen from there. Hybrids between D . stachydeum and D . glaucum have been reported. Although D . stachydeum has been seen flowering within 30 m of flowering D . depauperatum , no hybrids have been observed.

Delphinium stachydeum may possibly be confused with D . geyeri , from which it may be distinguished by its usually greater plant size, less pubescent foliage, and later flowering date. Delphinium stachydeum also may be confused with D . glaucum ; see discussion under that species."

Last updated 5/3/2023 by David Giblin.