Delphinium nuttallii subsp. ochroleucum

(Nuttall) M. J. Warnock

Phytologia 78: 98. 1995.

Common names: Light-yellow-flowered larkspur
Conservation concernEndemic
Basionym: Delphinium menziesii var. (ß) Nuttall in J. Torrey & A. Gray, Fl. N. Amer. 1: 31. 1838
Synonyms: Delphinium leucophaeum Greene
Treatment appears in FNA Volume 3.

Stems 30-60 cm. Flowers: sepals white or light yellow, spurs 9-11 mm; lower petal blades 4-6 mm. 2n = 16.


Phenology: Flowering late spring.
Habitat: Rock outcrops, rocky meadows
Elevation: 50-100 m

Discussion

Of conservation concern.

The range of morphologic features of Delphinium nuttallii subsp. ochroleucum (D. leucophaeum) is almost completely encompassed within that of D. nuttallii subsp. nuttallii. Sepal color is the only feature consistently separating the two subspecies. Were it not for the fact that any given population typically has plants of only one flower color, a rank of forma would be more appropriate.

Selected References

None.

Lower Taxa

None.
Michael J. Warnock +
(Nuttall) M. J. Warnock +
Delphinium menziesii var. (ß) +
Light-yellow-flowered larkspur +
50-100 m +
Rock outcrops, rocky meadows +
Flowering late spring. +
Conservation concern +  and Endemic +
Delphinium leucophaeum +
Delphinium nuttallii subsp. ochroleucum +
Delphinium nuttallii +
subspecies +