Erythranthe geyeri
Erythranthe minor
Geyer's monkeyflower, mimule de James
Colorado monkeyflower
decumbent-ascending to ascending or erect-ascending, branched, (3–)10–40 cm, glabrous.
erect to erect-ascending, branched, 5–20 cm, densely minutely hirtellous and eglandular or with a mixture of hirtellous and gland-tipped hairs.
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.
basal and cauline;
petiole 0 mm or proximals 1–3 mm;
blade palmately 3-veined, broadly ovate to elliptic-ovate or lanceolate, 8–25 × 5–15 mm, base cuneate to truncate, margins shallowly dentate to denticulate, apex acute to obtuse, surfaces glabrous.
plesiogamous, 2–8(–12), from distal nodes, sometimes from most nodes, very loosely racemose.
herkogamous, 1–3, from distal nodes.
glabrous.
sparsely hirtellous.
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.
yellow, not red-dotted, bilaterally symmetric, bilabiate;
tube-throat tubular-funnelform, 9–11 mm, exserted 0–1(–2) mm beyond calyx margin.
18–30 mm, sparsely short villous-glandular or glabrous.
10–20 mm, densely minutely hirtellous and eglandular or with a mixture of hirtellous and gland-tipped hairs.
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.
nodding 80–100º, not purple-dotted, cylindric-campanulate, inflated, sagittally compressed, 10–13 mm, densely minutely hirtellous and eglandular or with a mixture of hirtellous and gland-tipped hairs, throat closing.
included, (4.5–)5–8 mm.
included, 5–8 mm.
included, glabrous.
included, glabrous.
= 30.
Erythranthe geyeri
Erythranthe minor
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.)
The corollas of Erythranthe minor are shorter than those of typical E. tilingii, and the two species are allopatric. Corollas of E. tilingii rarely may be equally as short as those of E. minor but are produced in scattered localities on plants that are depauperate in other ways. The range of E. minor is primarily in Colorado apparently extending southward into the Wheeler Peak area of Taos County, New Mexico. Attribution of its range into the La Sal Mountains of east-central Utah has been based on misidentifications of E. guttata; the distinction between E. guttata and E. minor in Colorado also needs clarification.
Mimulus luteus Linnaeus var. alpinus A. Gray (1863, the type from Colorado) is an illegitimate name for Erythranthe minor, preceded by M. luteus var. alpinus Lindley (1827).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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