Laguna Mountains jewelflower is a species I only
recently discovered I had pictures of but had misidentified as Caulanthus
major. The Jepson Manual describes it as rare, inhabiting
montane coniferous forest to about 8000' in the eastern Transverse Range
and the Peninsular Range, and blooming from June to July. These
pictures were taken at Snow Valley and Heaps Peak Arboretum in the San
Bernardinos and on the Devil's Slide trail above Idyllwild. It
is a glaucous, slender-stemmed perennial rising from a woody root crown,
most single- or few-branched. The thickish, petioled basal leaves are
obovate to broadly oblanceolate and often dentate above the middle.
The cauline leaves are somewhat reduced and auriculate-clasping.
The inflorescence is generally open and lacks bracts. The
calyx is ± urn-shaped with generally erect sepals that are light
green in bud and become light yellow to white at anthesis when the calyx
is almost closed. The sepals often appear keeled because of their
raised edges. The petals are slightly exserted from the calyx. The
fruit is a subsessile, linear silique, ascending or spreading and generally
straight, containing a brown, oblong, winged seed. This species
prefers dry slopes in mostly yellow pine forest.
Click here for Latin name derivations: 1) Streptanthus 2)
Pronunciation: strep-TAN-thus ber-nar-DEE-nus.
Click here for Botanical