Erythranthe rubella |
Erythranthe acutidens |
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little redstem monkeyflower, red stem himulus, redstem monkeyflower, redstem or little redstem monkeyflower |
Kings River monkeyflower |
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Habit | Annuals, taprooted. | Annuals, fibrous-rooted. |
Stems | erect, simple, sometimes branched from basal nodes, 3–32 cm, minutely puberulent. |
erect to ascending-erect, simple or diffusely branched, 4-angled, 7–20 cm, glabrous. |
Leaves | cauline, basal not persistent; petiole 0 mm; blade palmately 3-veined (in broader ones), linear to elliptic, 5–22(–30) × 1–5 mm, base narrowed, margins entire, sometimes toothed, apex acute to obtuse, surfaces minutely puberulent. |
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, sometimes plesiogamous, 1–106, from distal or medial to distal nodes. |
herkogamous, 2–20, from proximal to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow and abaxial limb and throat red dotted or pink to purple and throat yellow, bilaterally symmetric, weakly bilabiate; tube-throat cylindric, 4–10 mm, exserted beyond calyx margin; limb expanded 3–5 mm, lobes entire or weakly notched, abaxial limb glabrous. |
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. |
Fruiting pedicels | 2–18 mm. |
divergent-arcuate, sometimes becoming deflexed, 10–23 mm, longer than subtending leaves, glabrous. |
Fruiting calyces | becoming red-angled or red, campanulate to nearly cylindric, 4–9 mm, margins distinctly toothed or lobed, glabrous or minutely puberulent, ribs thickened, lobes pronounced, erect, margins ciliate. |
campanulate, 7–9 mm, margins subtruncate, glabrous, lobes reduced, subequal. |
Capsules | included, 3–8 mm. |
included, (4–)5–10 mm. |
Anthers | included, glabrous. |
included, minutely villous-hirsute. |
Erythranthe rubella |
Erythranthe acutidens |
|
Phenology | Flowering Apr–Jun. | Flowering Apr–Jul. |
Habitat | Open slopes and washes. | 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 | 300–3000 m. [1000–9800 ft.] | 200–2000 m. [700–6600 ft.] |
Distribution |
AZ; CA; CO; NM; NV; TX; UT; WY; Mexico (Baja California, Sonora)
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CA
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Discussion | Mimulus acutidens Greene is heterotypic with the South American M. acutidens Reiche, which is a later homonym. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 17, p. 384. | FNA vol. 17, p. 383. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Mimulus rubellus, M. gratioloides | Mimulus acutidens, M. inconspicuus var. acutidens |
Name authority | (A. Gray) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 34. (2012) |
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