Erythranthe acutidens
Phytoneuron 2012-39: 34. 2012.
Annuals, fibrous-rooted. Stems erect to ascending-erect, simple or diffusely branched, 4-angled, 7–20 cm, glabrous. Leaves basal and cauline; petiole 0 mm; blade palmately 3–5 veined, ovate to broadly ovate, 10–20 × 7–11 mm, base rounded to truncate, margins serrate-denticulate, apex acute, surfaces glabrous. Flowers herkogamous, 2–20, from proximal to distal nodes. Fruiting pedicels divergent-arcuate, sometimes becoming deflexed, 10–23 mm, longer than subtending leaves, glabrous. Fruiting calyces campanulate, 7–9 mm, margins subtruncate, glabrous, lobes reduced, subequal. Corollas pale pink to rose purple, throat yellow or deep pink externally with 2 yellow spots below abaxial limb, bilaterally symmetric, weakly bilabiate; tube-throat cylindric-funnelform, 9–12 mm, exserted beyond calyx margin; limb expanded 9–12 mm. Styles glabrous. Anthers included, minutely villous-hirsute. Capsules included, (4–)5–10 mm.
Phenology: Flowering Apr–Jul.
Habitat: Grassy slopes, sandy terraces, marshy places, lakeshores, creek sides, seep edges, shaded canyon slopes, roadcuts and roadsides, woodlands of Pseudotsuga menziesii-Quercus chrysolepis, oak-gray pine, or interior live oak.
Elevation: 200–2000 m.
Discussion
Mimulus acutidens Greene is heterotypic with the South American M. acutidens Reiche, which is a later homonym.
Selected References
None.