Erythranthe geyeri |
Erythranthe latidens |
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Geyer's monkeyflower, mimule de James |
broad-tooth monkeyflower |
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Habit | Perennials, rhizomatous, rooting at nodes. | Annuals, fibrous-rooted or filiform-taprooted. |
Stems | decumbent-ascending to ascending or erect-ascending, branched, (3–)10–40 cm, glabrous. |
ascending to ascending-erect, geniculate at nodes, usually many-branched from base, 3–10(–25) cm, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
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. |
basal and cauline, largest at base or near mid stem, sometimes unreduced in size up to distalmost nodes; petiole 0 mm; cauline blade palmately 3(–5)-veined, ovate to ovate-lanceolate, 8–26(–35) mm, base abruptly cuneate to rounded, sometimes subauriculate, margins entire or barely mucronulate to shallowly dentate-mucronulate, teeth or mucronulae 1–3 per side, apex acute to rounded, surfaces short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
Flowers | plesiogamous, 2–8(–12), from distal nodes, sometimes from most nodes, very loosely racemose. |
plesiogamous, (1–)3–12, from 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. |
white to pinkish or flesh colored, rarely yellowish, throat and abaxial lobes red-spotted, nearly radially symmetric; tube-throat cylindric, 5–6(–8) mm, exserted beyond calyx margin; limb barely widened, lobes broadly obovate, apex rounded. |
Fruiting pedicels | 18–30 mm, sparsely short villous-glandular or glabrous. |
straight, 11–28 mm, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
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. |
purplish, prominently 5-angled, tubular-campanulate or ovoid-ellipsoid, strongly inflated, 8–12 mm, margins distinctly toothed or lobed, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped, lobes pronounced, erect. |
Capsules | included, (4.5–)5–8 mm. |
included, 6–7 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 30. |
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Erythranthe geyeri |
Erythranthe latidens |
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Phenology | Flowering May–Aug(–Oct). | Flowering Apr–Jun. |
Habitat | Edges of flowing streams, marsh edges, drainage ditches, seepage areas, springs, muddy or moist banks. | Drained flats or slopes subject to vernal inundation, depressions in open fields, bare clay soils, vacant lots, roadsides. |
Elevation | 200–2500 m. (700–8200 ft.) | 10–800 m. (0–2600 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; OR; Mexico (Baja California)
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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.) |
The distinction between Erythranthe latidens and E. inflatula sometimes seems arbitrary, perhaps because of gene exchange where they are sympatric in northwestern California. Erythranthe latidens in Oregon is known only from southern Harney County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 406. | FNA vol. 17, p. 400. |
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 | Mimulus inconspicuus var. latidens, M. latidens |
Name authority | (Torrey) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) |
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