Erythranthe exigua |
Erythranthe primuloides |
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eye strain monkeyflower, San Bernardino Mountains monkeyflower |
primrose monkey-flower |
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Habit | Annuals, taprooted. | Perennials, rhizomatous or stoloniferous, mat-forming, rhizomes or stolons flagelliform. |
Stems | erect, simple, sometimes branched near base, 2–10 cm, minutely stipitate-glandular. |
erect to ascending, usually simple, 2–10(–20) cm, villous, internodes shortened. |
Leaves | 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. |
all basal or near basal, often rosulate; petiole 0 mm; blade palmately 3-veined, oblanceolate to elliptic-obovate, 7–40 × 4–12 mm, base cuneate to attenuate, margins entire, distally denticulate to dentate, or sharply serrate-dentate, apex acute to obtuse, abaxial surface glabrous, adaxial glabrous or glabrate to sparsely to densely long-villous, eglandular. |
Flowers | plesiogamous, (1 or)2–6, from distal or medial to distal nodes. |
herkogamous, 1. |
Styles | glabrous. |
glabrous. |
Corollas | 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. |
yellow to orange-yellow, usually brown-spotted abaxially, base of each abaxial lobe usually with a larger reddish brown spot, bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular, densely hirsute on abaxial side of opening; tube-throat narrowly campanulate, 15–20 mm, exserted beyond calyx margin; lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open, palate densely villous, abaxial ridges prominent. |
Fruiting pedicels | divergent-spreading, 15–20 mm, minutely stipitate-glandular. |
30–110(–130) mm, glabrous or sparsely stipitate-glandular near base. |
Fruiting calyces | campanulate, 2–2.5 mm, minutely stipitate-glandular. |
tubular-campanulate, weakly or not inflated, 6–8 mm, glabrous. |
Capsules | distinctly exserted, 3–4 mm. |
included, 6–7 mm. |
Stigmas | persistent in fruit. |
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Anthers | included, glabrous. |
slightly exserted, margins ciliate, glabrous. |
2n | = 34. |
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Erythranthe exigua |
Erythranthe primuloides |
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Phenology | Flowering Jun–Jul. | Flowering Jun–Aug. |
Habitat | Gentle slopes, along small streams, vernal creeks, pebble plains, openings in Jeffrey pine-juniper forests, runoff areas, vernal depressions, roadsides. | Wet meadows, seeps, streamsides. |
Elevation | 1800–2400(–2600) m. (5900–7900(–8500) ft.) | 600–3400 m. (2000–11200 ft.) |
Distribution |
CA; Mexico (Baja California)
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AZ; CA; ID; MT; NM; NV; OR; UT; WA
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Discussion | 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.) |
Flowers in Erythranthe primuloides and E. linearifolia characteristically appear to be scapose, but the scapes are pedicels arising from axils of greatly foreshortened stems. Occasionally in both species the internodes may lengthen somewhat, and the leaves are not so densely clustered at the base of the stems. In northern Klamath, western Deschutes, and eastern Douglas counties, Oregon, an area within the range of typical populations, Erythranthe primuloides has distinctively large corollas (limbs 10–15 mm wide). Apparent clones of large-flowered and smaller-flowered plants sometimes grow in close proximity or even intermixed, appearing as two different entities. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 406. | FNA vol. 17, p. 389. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus exiguus | Mimulus primuloides, M. nevadensis, M. pilosellus, M. primuloides var. minimus, M. primuloides var. pilosellus |
Name authority | (A. Gray) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 42. (2012) | (Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) |
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