Erythranthe taylorii |
Erythranthe rubella |
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Shasta limestone monkeyflower, Taylor's or Shasta limestone monkeyflower |
little redstem monkeyflower, red stem himulus, redstem monkeyflower, redstem or little redstem monkeyflower |
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Habit | Annuals, filiform-taprooted. | Annuals, taprooted. |
Stems | erect, straight at nodes, simple or few-branched from base, 5–10 cm, sparsely eglandular-villous proximally, becoming sparsely short stipitate-glandular distally. |
erect, simple, sometimes branched from basal nodes, 3–32 cm, minutely puberulent. |
Leaves | usually cauline, basal not persistent, largest at mid stem or basal and mid stem to nearly even-sized; petiole 3–5(–8) mm; blade often purple adaxially, palmately 3–5-veined, broadly ovate to elliptic-ovate or ovate-lanceolate, 4–20 × 4–12 mm, base rounded to truncate, margins serrate-dentate, teeth 2–4 per side, shallow, apex rounded to obtuse or acute, surfaces: distals moderately short-stipitate-glandular. |
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. |
Flowers | herkogamous, sometimes plesiogamous, 2–6(–8), from proximal to distal nodes. |
herkogamous, sometimes plesiogamous, 1–106, from distal or medial to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, throat ceiling sometimes red-spotted or -lined, abaxial limb yellow or with 1 or 2 red splotches, bilaterally symmetric, bilabiate; tube-throat funnelform, 5–7 mm, exserted beyond calyx margin. |
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. |
Fruiting pedicels | divergent to arcuate-divergent, 6–13 mm. |
2–18 mm. |
Fruiting calyces | wing-angled, tubular-campanulate, 4–5 mm, margins distinctly toothed or lobed, densely invested with tiny, waxy-white, eglandular, papillose hairs between angles, lobes pronounced, erect. |
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. |
Capsules | included, 3–4 mm. |
included, 3–8 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Erythranthe taylorii |
Erythranthe rubella |
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Phenology | Flowering Feb–May. | Flowering Apr–Jun. |
Habitat | Crevices in limestone cliff faces and outcrops. | Open slopes and washes. |
Elevation | 900–1100 m. (3000–3600 ft.) | 300–3000 m. (1000–9800 ft.) |
Distribution |
CA
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AZ; CA; CO; NM; NV; TX; UT; WY; Mexico (Baja California, Sonora)
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Discussion | Erythranthe taylorii is known only from the Shasta Lake region of northwestern Shasta County. Its broad, distinctly bilabiate corollas and ovate leaf blades with palmate venation are similar to those of species of the northern group of sect. Mimulosma, the "Columbia River clade" (J. B. Whittall et al. 2006) of Idaho, Montana, Oregon, Washington, and Wyoming, particularly to the Idaho endemic E. ampliata. Erythranthe taylorii is distinct from E. ampliata in its larger, papillose calyces, shorter fruiting pedicels, corollas with shorter tube-throats, and shorter capsules. Considerable corolla color variation exists in E. taylorii in the occurrence and density of red dots and lines on the throat ceiling and larger red splotches on the abaxial limb. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 17, p. 398. | FNA vol. 17, p. 384. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus rubellus, M. gratioloides | |
Name authority | G. L. Nesom: Phytoneuron 2013-43: 6, figs. 5–7. (2013) — (as taylori) | (A. Gray) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) |
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