Erythranthe rubella |
Erythranthe grayi |
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little redstem monkeyflower, red stem himulus, redstem monkeyflower, redstem or little redstem monkeyflower |
Gray's monkeyflower, mariposa 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, simple or branched from base, weakly 4-angled, 8–20 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, broadly ovate, 7–18 × 5–12 mm, base rounded, margins denticulate, apex acute, surfaces glabrous, rarely sparsely puberulent. |
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. |
rose red, throat pink lined with rose red and a yellow patch, abaxial ridges yellow, bilaterally symmetric, weakly bilabiate; tube-throat cylindric-funnelform, 8–11 mm, exserted beyond calyx margin; limb expanded 7–10 mm. |
Fruiting pedicels | 2–18 mm. |
6–7 mm, shorter 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, 9–11 × 5–6 mm, margins subtruncate, glabrous, sometimes densely papillate at flowering with tiny, 1-celled, eglandular hairs, these apparently deciduous by fruiting, lobes reduced, subequal. |
Capsules | included, 3–8 mm. |
included, 5–9 mm. |
Anthers | included, glabrous. |
included, minutely villous-hirsute. |
Erythranthe rubella |
Erythranthe grayi |
|
Phenology | Flowering Apr–Jun. | Flowering May–Jul(–Oct). |
Habitat | Open slopes and washes. | Drying pond beds, creek banks, yellow pine, yellow pine-Libocedrus woodlands. |
Elevation | 300–3000 m. [1000–9800 ft.] | 1000–1900 m. [3300–6200 ft.] |
Distribution |
AZ; CA; CO; NM; NV; TX; UT; WY; Mexico (Baja California, Sonora)
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CA
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Discussion | In addition to the features noted in the key and descriptions, the fruiting calyces of Erythranthe grayi are distinctly more inflated than those of E. acutidens and E. inconspicua. G. L. Nesom (2012g) maintained E. grayi as distinct from E. acutidens, relying primarily on fruiting pedicel length (see key above), but the two have nearly identical ranges (Tuolumne County south to Kern County), and study of additional collections suggests that only a single species may be represented. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 17, p. 384. | FNA vol. 17, p. 382. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Mimulus rubellus, M. gratioloides | Mimulus grayi |
Name authority | (A. Gray) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 34. (2012) |
Web links |
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