Erythranthe purpurea

Annuals, taprooted. Stems erect, simple or branched from basal nodes, 3–10 cm, minutely puberulent. Leaves cauline, basal not persistent; petiole 0 mm; blade palmately 3–5-veined, elliptic to lanceolate, 4–15 × 1–5 mm, base truncate to truncate-cordate, clasping, margins entire, sometimes toothed, apex acute to obtuse, surfaces minutely puberulent. Flowers herkogamous, 1–22, from distal or medial to distal nodes. Fruiting pedicels ascending to often spreading horizontally, 13–57 (–70) mm. Fruiting calyces becoming reddish, campanulate, 3–8 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. Corollas pink to purple, adaxial limb darker than abaxial, abaxial limb with yellow markings, bilaterally symmetric, strongly bilabiate; tube-throat cylindric to funnelform, 7–13 mm, exserted beyond calyx margin; limb expanded 7–10 mm, bilabiate, 3 abaxial lobes notched, 2 adaxial nearly entire, abaxial limb sparsely bearded. Styles glabrous. Anthers included, glabrous. Capsules included, 3–8 mm.

Phenology: Flowering May–Jun.
Habitat: Moist openings along streams, swales, and depressions, pine duff in yellow pine forests, margins of dry meadows.
Elevation: 1900–2800 m.

Calif., Mexico (Baja California)

Discussion

Erythranthe purpurea is restricted to the San Bernardino Mountains in San Bernardino County and is disjunct in the Sierra San Pedro Mártir in Baja California, Mexico.

Selected References

None.

Lower Taxa