Streptanthus glandulosus subsp. hoffmanii

(Kruckeberg) M. S. Mayer & D. W. Taylor

Novon 18: 280. 2008.

Basionym: Streptanthus glandulosus var. hoffmanii Kruckeberg Madroño 14: 223. 1958
Treatment appears in FNA Volume 7. Treatment on page 713. Mentioned on page 712.

Stems 1.5–4.5(–7) dm, densely hirsute proximally, sparsely to moderately so distally. Cauline leaves: blade flat distally, margins entire or denticulate, surfaces moderately to sparsely hirsute. Racemes secund; rachis straight. Fruiting pedicels 5–15 mm, sparsely pubescent or glabrous. Flowers: sepals lavender or rose to purple, 6–7 mm, sparsely pubescent or glabrous; petals lavender to purplish, 10–12mm; adaxial filaments 7–10 mm. Fruits spreading to reflexed, arcuate; valves sparsely pubescent or glabrous. 2n = 28.

Phenology: Flowering May–Jul.
Habitat: Serpentine or Franciscan formation outcrops


Of conservation concern.

Subspecies hoffmanii is known from Sonoma County.

Selected References


Lower Taxa

Ihsan A. Al-Shehbaz +
(Kruckeberg) M. S. Mayer & D. W. Taylor +
Streptanthus glandulosus var. hoffmanii +
Serpentine or Franciscan formation outcrops +
Flowering May–Jul. +
Erysimum glandulosum +  and Euklisia glandulosa +
Streptanthus glandulosus subsp. hoffmanii +
Streptanthus glandulosus +
subspecies +