Phytoneuron 2012-39: 36. 2012.
Perennials, stoloniferous, sometimes also rhizomatous. Stems scandent to pendent, usually simple, 5–30 (–40) cm, villous-glandular to minutely stipitate-glandular, hairs often a mixture of longer and much shorter ones, gland-tipped. Leaves cauline; petiole 0 mm; blade palmately 3-veined, flabellate distally to obovate to oblanceolate or elliptic, (5–) 13–40 (–55) × 8–20 (–25) mm, largest near mid-stem or distally, thick, base cuneate to rounded, subclasping, margins coarsely serrate on distal 1/2, apex acute, surfaces villous-glandular to minutely stipitate-glandular, hairs often a mixture of longer and much shorter ones, gland-tipped. Flowers herkogamous, 2–8, axillary at leafy medial to distal nodes. Fruiting pedicels 10–30 (–40) mm. Fruiting calyces cuneate-cylindric to cylindric, weakly or not inflated, 15–23 (–27) mm, glabrous or minutely stipitate-glandular to sparsely glandular-villosulous, lobes triangular-acuminate. Corollas scarlet to orange-red or orange, palate red, not spotted or striped, bilaterally symmetric, strongly bilabiate; tube-throat narrowly funnelform, 20–30 mm, exserted 5–15 mm beyond calyx margin; throat open, palate puberulent. Styles glabrous. Anthers exserted, villous, thecae reflexed 45º. Capsules included, 6–10 mm. 2n = 16.
Phenology: Flowering May–Sep(–Nov).
Habitat: Seepages in sandstone overhangs, cave roofs, walls, crevices, and cliff bases, pinyon-juniper woodlands.
Elevation: 900–2000 m.
Ariz., Colo., N.Mex., Utah.
The range of Erythranthe eastwoodiae appears to be essentially contiguous with that of E. verbenacea in the Grand Canyon region, but there is no evidence of hybridization.
Erythranthe eastwoodiae (as Mimulus eastwoodiae) is in the Center for Plant Conservation’s National Collection of Endangered Plants.