Erythranthe tilingii |
Erythranthe exigua |
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larger mountain monkeyflower, mountain monkey-flower, Tiling's monkey-flower |
eye strain monkeyflower, San Bernardino Mountains monkeyflower |
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Habit | Perennials, rhizomatous, solitary to weakly colonial, rhizomes forming a mass, yellowish, branching, filiform. | Annuals, taprooted. |
Stems | erect-ascending, usually freely branched, 2–35 cm, glabrous or sparsely stipitate-glandular to short glandular-villous. |
erect, simple, sometimes branched near base, 2–10 cm, minutely stipitate-glandular. |
Leaves | cauline; petiole 0–25 mm, distals 0 mm; blade palmately 3–5-veined, ovate to lanceolate-triangular or narrowly lanceolate (broadly ovate in large-leaved forms), 5–35(–55) mm, base cuneate to attenuate, margins irregularly denticulate, apex acute to obtuse or rounded, surfaces glabrous, sparsely stipitate-glandular to short glandular-villous, glabrate, or sparsely to moderately villous, hairs thick-vitreous, eglandular. |
cauline; petiole 0 mm; blade 1-veined, obovate-oblong to narrowly elliptic, ovate, or narrowly ovate, 3–6 mm, base rounded to truncate or cuneate, margins entire or shallowly dentate, apex rounded, surfaces minutely stipitate-glandular. |
Flowers | herkogamous, 1–3(–5), from distal nodes. |
plesiogamous, (1 or)2–6, from distal or medial to distal nodes. |
Styles | hirtellous. |
glabrous. |
Corollas | yellow, red-dotted, bilaterally symmetric, bilabiate; tube-throat broadly funnelform, 15–28 mm, exserted 5–10 mm beyond calyx margin; limb expanded 14–30 mm. |
light lavender to purple, abaxial lobe and palate ridges with yellow patches, bilaterally symmetric, ± bilabiate; tube-throat narrowly funnelform-cylindric, 1.5–2.5 mm, exserted 0.5 mm beyond calyx margin; lobes spreading. |
Fruiting pedicels | 15–35(–40) mm, sparsely stipitate-glandular to short glandular-villous. |
divergent-spreading, 15–20 mm, minutely stipitate-glandular. |
Fruiting calyces | usually purple-tinged and purple-dotted, broadly campanulate, inflated, sagittally compressed, 11–15 mm, glabrous or sparsely stipitate-glandular to short glandular-villous, villous at sinuses, throat closing, lobes broadly ovate, abaxial usually longer than lateral, adaxial at least 2 times as long as others. |
campanulate, 2–2.5 mm, minutely stipitate-glandular. |
Capsules | included, 5–7 mm. |
distinctly exserted, 3–4 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Stigmas | persistent in fruit. |
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2n | = 28, 56. |
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Erythranthe tilingii |
Erythranthe exigua |
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Phenology | Flowering Jul–Sep. | Flowering Jun–Jul. |
Habitat | Seeps, springs, stream banks, shallow rivulets, cliff bases, ledges and crevices, steep gravelly slopes, wet meadows. | Gentle slopes, along small streams, vernal creeks, pebble plains, openings in Jeffrey pine-juniper forests, runoff areas, vernal depressions, roadsides. |
Elevation | 1400–3400 m. (4600–11200 ft.) | 1800–2400(–2600) m. (5900–7900(–8500) ft.) |
Distribution |
AZ; CA; ID; MT; NV; OR; UT; AB
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CA; Mexico (Baja California)
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Discussion | Plants of Erythranthe tilingii are characterized by their relatively low stature and stems arising from a system of thin rhizomes and producing mostly one to three large flowers each; they usually occur at relatively high elevations. Erythranthe tilingii sometimes has been considered to include one or several infraspecific entities; from within this taxonomic amalgam, four distinct species are recognized here: E. caespitosa, E. corallina, E. minor, and E. tilingii. Erythranthe corallina and E. minor probably are more closely related to E. guttata. The populations identified here as E. tilingii from northeastern Oregon northeast to Alberta and southeast to Utah may prove to be a separate (undescribed) species. Erythranthe tilingii in the strict sense is relatively widespread over the western United States and is sympatric with E. caespitosa and E. corallina. Leaves in E. tilingii are variable in size, and particularly in Idaho, they may approach the small size of those of E. caespitosa, but the leaf margins of E. tilingii are distinctly toothed, and the stems are taller and more erect. Across the range of the species, plants sometimes produce very large leaves, but these often occur on plants with characteristically smaller leaves. This wide variability in size apparently does not occur in E. caespitosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants of Erythranthe exigua are diminutive annuals with few nodes and greatly reduced leaves, corollas, and calyces, wide spreading pedicels, and lavender flowers with small but bilabiate limbs. The species is known only from the San Bernardino Mountains of San Bernardino County and in adjacent Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 408. | FNA vol. 17, p. 406. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus tilingii, M. caespitosus var. implexus, M. implexus, M. implicatus, M. langsdorffii var. tilingii, M. lucens, M. veronicifolius | Mimulus exiguus |
Name authority | (Regel) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) | (A. Gray) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 42. (2012) |
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