Erythranthe nudata |
Erythranthe arenicola |
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bare monkeyflower |
beach monkeyflower |
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Habit | Annuals, taprooted or fibrous-rooted. | Annuals, fibrous-rooted or slender-taprooted, rarely rooting at nodes. |
Stems | erect or ascending, simple or few-branched from basal nodes, branches mostly reddish purple, (5–)9–30 cm, glabrous or minutely stipitate-glandular, hairs 0.05–0.1 mm, at least just above nodes. |
erect, rarely prostrate to prostrate-ascending, few-branched, 3–17 cm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular. |
Leaves | cauline on wide internodes; petiole 5–30 mm, distals 0 mm; blade 1-veined or palmately 3–5-veined, proximals lanceolate or oblong-lanceolate to ovate, narrowly spatulate, or oblanceolate, distals usually linear, not perfoliate, 5–15(–30) × 1–5 mm, base attenuate, margins denticulate to proximally dentate-lobed, apex acute, surfaces glabrous or minutely stipitate-glandular, hairs 0.05–0.1 mm, at least just above nodes. |
basal and cauline; petiole: basal 2–8 mm or mid and distals absent; blade palmately 3–5-veined, suborbicular to broadly ovate or depressed-ovate, 5–17 × 6–15 mm, base truncate or truncate-cuneate to subcordate, margins subentire or crenulate, apex rounded to obtuse, surfaces moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular. |
Flowers | herkogamous, (2–)4–8, usually in proximal or medial to distal axils, chasmogamous. |
herkogamous, 1–6, at distal nodes, chasmogamous. |
Styles | glabrous. |
hirtellous. |
Corollas | yellow, without a large red splotch, throat floor and tube red-spotted, bilaterally symmetric, bilabiate; tube-throat cylindric-funnelform, 8–12 mm, exserted 2–4 mm beyond calyx margin; limb expanded 8–12 mm. |
yellow, red-dotted, bilaterally symmetric, bilabiate; tube-throat funnelform, 11–20 mm, exserted 4–8 mm beyond calyx margin; limb expanded 10–18 mm. |
Fruiting pedicels | erect in flower, spreading to divaricate, rarely recurved, in fruit, 10–35 mm, glabrous or minutely stipitate-glandular, hairs 0.05–0.1 mm, at least just above nodes. |
9–17 mm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular. |
Fruiting calyces | ovate-campanulate, inflated, sagittally compressed, 6–13 mm, glabrous or minutely stipitate-glandular, hairs 0.05–0.1 mm, at least just above nodes, throat closing, abaxial lobe upcurving over lateral ones, nearly closing orifice. |
nodding, ovoid-campanulate, inflated, sagittally compressed, 9–16 mm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular, throat closing. |
Capsules | included, 6–7 mm. |
included, 5–12 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Erythranthe nudata |
Erythranthe arenicola |
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Phenology | Flowering Apr–Jun. | Flowering Apr–Aug. |
Habitat | Open gravelly seeps on serpentine outcrops, serpentine crevices, springs, streamsides, gravelly creek beds, roadside drainages and swales. | Sandy beaches, especially in moist hollows among dunes, sea cliff bases, chaparral near beaches, mudstone outcrops. |
Elevation | 200–700 m. (700–2300 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
CA
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CA |
Discussion | Erythranthe nudata is distinct in its annual duration, few, inconspicuous, and narrow leaves, long and spreading-divaricate pedicels, and large corollas. The plants apparently are restricted to serpentine substrate and known only from Colusa, Glenn, Lake, Mendocino, Napa, and Sonoma counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
F. W. Pennell (1947, 1951) considered Erythranthe arenicola an endemic of Monterey County, but plants from adjacent San Luis Obispo and Santa Cruz counties also belong here. Most of the localities are at seaside, but some are more than a mile inland. Erythranthe arenicola is hypothesized here to be a derivative of E. guttata or E. grandis, retaining the herkogamous breeding system of its putative ancestor but reduced in size and duration. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 417. | FNA vol. 17, p. 412. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus nudatus | Mimulus guttatus subsp. arenicola |
Name authority | (Curran ex Greene) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) | (Pennell) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
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