Diplacus angustatus

Herbs, annual, acaulescent or caulescent. Stems erect, 0 or 20–70 mm, eglandular-puberulent. Leaves: basal densely clustered; petiole absent; blade narrowly lanceolate or elliptic to linear, (3.5–)5–36 × 0.5–3.8(–5) mm, margins entire, plane, proximal 1/2+ ciliate, apex obtuse, surfaces glabrous. Pedicels 0–1 mm in fruit. Flowers 1 per node, chasmogamous. Calyces slightly asymmetrically attached to pedicel, inflated in fruit, (4–)7–14(–17) mm, pilose, lobes subequal, apex obtuse, ribs becoming reddish, intercostal areas pale green to whitish. Corollas: throat and limb magenta to purple with a dark maroon-purple spot or elongate blotch at base of each abaxial lobe, palate ridges and base of abaxial lip yellow, tube-throat 20–60 mm, limb 10–20 mm diam., bilabiate, lobes equal. Anthers (distal pair) sometimes nearly exserted, hirsute with 2 apical tufts. Styles glandular-puberulent. Stigmas usually exserted, lobes subequal. Capsules 2–4.5 mm, indehiscent. 2n = 18.

Phenology: Flowering Mar–May(–Jun).
Habitat: Vernally flooded depressions or swales, summits of mesas or foothills.
Elevation: 300–1200 m.

Distribution

• Generated Map
• Legacy Map

Calif.

Discussion

Diplacus angustatus occurs in northern California in the Sierra Nevada and across the Sacramento Valley in the North Coast Range (Lake, Mendocino, and Napa counties); it also is known from one area in northwestern Shasta County and has a disjunct series of populations in Fresno and Tulare counties.

Selected References

None.

Lower Taxa

None.