Erythranthe geyeri |
Erythranthe rhodopetra |
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Geyer's monkeyflower, mimule de James |
red rock canyon monkeyflower |
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Habit | Perennials, rhizomatous, rooting at nodes. | Annuals, taprooted. |
Stems | decumbent-ascending to ascending or erect-ascending, branched, (3–)10–40 cm, glabrous. |
erect, simple or branched from basal nodes, 6–7(–21) cm, minutely puberulent. |
Leaves | cauline, basal not persistent; petiole 3–10(–20) mm or 0 mm distally; blade palmately 3–5-veined, suborbicular to depressed-ovate or broadly elliptic-ovate to reniform, 6–25 mm, relatively even-sized or largest often at mid stem, bracteal reduced, base cuneate to truncate or subcordate, margins shallowly dentate to crenate-dentate, teeth 3–7(–10) per side, apex rounded, adaxial surface of distals sparsely short villous-glandular or glabrous. |
cauline, basal not persistent; petiole 0 mm; blade palmately 3-veined, linear to oblanceolate, 5–22 × 1–7(–10) mm, base attenuate, margins entire, apex acute to obtuse, surfaces minutely puberulent. |
Flowers | plesiogamous, 2–8(–12), from distal nodes, sometimes from most nodes, very loosely racemose. |
herkogamous, 1–46, from distal or medial to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, sparsely red-dotted or not, bilaterally symmetric, weakly bilabiate; tube-throat cylindric-funnelform, 6–8 mm, exserted 1–3 mm beyond calyx margin; limb expanded 5–8 mm. |
pale pink to pink, throat broad, yellow, palate with a broad yellow patch covering ridges and lateral areas, bilaterally symmetric, strongly bilabiate; tube-throat cylindric to funnelform, 9–15 mm, exserted beyond calyx margin; limb expanded 16–25 mm, lobes notched, abaxial limb glabrous or sparsely bearded. |
Fruiting pedicels | 18–30 mm, sparsely short villous-glandular or glabrous. |
erect to ascending, 10–33(–40) mm. |
Fruiting calyces | obtriangular to broadly obtriangular or deeply cupulate, inflated, sagittally compressed, (7–)8–12 mm, sparsely short villous-glandular or glabrous, throat not closing, lateral lobes shallowly convex-mucronulate, adaxial ovate with apex rounded. |
becoming reddish, campanulate to cylindric, 5–10 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. |
Capsules | included, (4.5–)5–8 mm. |
included, 4–9 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 30. |
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Erythranthe geyeri |
Erythranthe rhodopetra |
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Phenology | Flowering May–Aug(–Oct). | Flowering Mar–May. |
Habitat | Edges of flowing streams, marsh edges, drainage ditches, seepage areas, springs, muddy or moist banks. | Washes in Mojave Desert scrub. |
Elevation | 200–2500 m. (700–8200 ft.) | 600–900 m. (2000–3000 ft.) |
Distribution |
AZ; CO; IA; IL; KS; MI; MN; MO; NE; NM; OK; PA; SD; TX; WI; WY; AB; MB; ON; QC; SK; Mexico (Chihuahua, Coahuila, Distrito Federal, Durango, Hidalgo, Nuevo León, México, Querétaro, San Luis Potosí, Sonora, Veracruz, Zacatecas)
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CA |
Discussion | Erythranthe geyeri has commonly been regarded as conspecific with E. glabrata (Kunth) G. L. Nesom (as Mimulus glabratus var. jamesii), but typical E. glabrata has a different chromosome number and distinct morphology and its range does not reach the United States. In Mexico, the two species are broadly sympatric without intermediates. An allozyme study of the M. glabratus complex (R. K. Vickery 1990) indicated that the Great Plains populations of E. geyeri are distinct from those in New Mexico and Mexico, corresponding to a difference in pedicel vestiture. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe rhodopetra is endemic to the El Paso Mountains in Kern County. The species was treated previously as part of E. palmeri but is distinguished by having a wider limb (16–25 mm) than E. palmeri (8–15 mm) and pale pink flowers with a broad yellow palate and orifice. In contrast, E. palmeri has deep pink corollas with two yellow ridges on the palate. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 406. | FNA vol. 17, p. 387. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus geyeri, M. glabratus var. fremontii, M. glabratus var. jamesii, M. glabratus var. oklahomensis, M. jamesii, M. jamesii var. fremontii | |
Name authority | (Torrey) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) | N. S. Fraga: Aliso 30: 66, figs. 26–28. (2012) |
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