Erythranthe exigua |
Erythranthe erubescens |
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eye strain monkeyflower, San Bernardino Mountains monkeyflower |
California blushing monkeyflower |
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Habit | Annuals, taprooted. | Perennials, rhizomatous. |
Stems | erect, simple, sometimes branched near base, 2–10 cm, minutely stipitate-glandular. |
erect, usually simple, 25–90 cm, stipitate-glandular to glandular-villous. |
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. |
cauline; petiole 0 mm; blade palmately veined, elliptic to ovate, ovate-lanceolate, or lanceolate, (20–)30–90 × 5–25(–35) mm, base rounded to cuneate, subclasping, margins denticulate, subentire, or entire, apex acute, surfaces stipitate-glandular to glandular-villous. |
Flowers | plesiogamous, (1 or)2–6, from distal or medial to distal nodes. |
herkogamous, 2–8, axillary at leafy medial to distal nodes. |
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. |
light pink, darker pink stripes down middle of each lobe, abaxial 3 lobes with a white basal patch, palate ridges yellow, bilaterally symmetric, strongly bilabiate; tube-throat funnelform, 20–30 mm, exserted beyond calyx margins; lobe apex usually truncate, shallowly retuse, throat open. |
Fruiting pedicels | divergent-spreading, 15–20 mm, minutely stipitate-glandular. |
45–90 mm. |
Fruiting calyces | campanulate, 2–2.5 mm, minutely stipitate-glandular. |
cylindric-campanulate, not inflated, 15–22 mm, stipitate-glandular to glandular-villous, tube 14–19 × 6–8 mm, lobes subequal to distinctly unequal, ovate, apex linear-caudate. |
Capsules | distinctly exserted, 3–4 mm. |
included, 7–13 mm. |
Stigmas | persistent in fruit. |
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Anthers | included, glabrous. |
included, white-villous, thecae spreading. |
2n | = 16. |
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Erythranthe exigua |
Erythranthe erubescens |
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Phenology | Flowering Jun–Jul. | Flowering Jul–Aug. |
Habitat | Gentle slopes, along small streams, vernal creeks, pebble plains, openings in Jeffrey pine-juniper forests, runoff areas, vernal depressions, roadsides. | Springs and seeps, meadows, cliffs, steep rocky slopes, ridges. |
Elevation | 1800–2400(–2600) m. (5900–7900(–8500) ft.) | (1400–)1800–3000(–3500) m. ((4600–)5900–9800(–11500) ft.) |
Distribution |
CA; Mexico (Baja California)
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CA; NV
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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.) |
Erythranthe erubescens was long identified as E. lewisii but is distinct in its light pink corollas (versus mostly magenta-rose to purplish in E. lewisii), more broadly cylindric calyx tube [14–19 × 6–8 mm versus 12–15(–17) × 9–12 mm], and its geographic range in the Sierra Nevada of California (versus widespread from southern Alaska south to northwestern California, northern Utah, eastern Nevada, and northern Colorado in E. lewisii). The two are genetically isolated and phylogenetically distinct (see summary of evidence in G. L. Nesom 2014b). In California, Erythranthe erubescens ranges from Modoc, Plumas, and Tehama counties south to Fresno County; in Nevada, it is known only from Washoe County and Carson City. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 406. | FNA vol. 17, p. 393. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus exiguus | |
Name authority | (A. Gray) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 42. (2012) | G. L. Nesom: Phytoneuron 2014-31: 12, figs. 11–13. (2014) |
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