Erythranthe nudata |
Erythranthe bicolor |
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bare monkeyflower |
yellow and white monkeyflower |
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Habit | Annuals, taprooted or fibrous-rooted. | Annuals, taprooted. |
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, simple or branched from basal nodes, 4–30 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
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. |
cauline, basal not persistent; petiole 0 mm or short-attenuate; blade 1-veined or palmately 3-veined (in broader ones), narrowly elliptic to linear-lanceolate or linear-oblanceolate, 10–30 × 2–6 mm at mid stem, base attenuate, margins entire or remotely shallowly dentate to mucronulate, teeth 1–4 per side, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
Flowers | herkogamous, (2–)4–8, usually in proximal or medial to distal axils, chasmogamous. |
herkogamous, 2–8, from medial to distal nodes. |
Styles | glabrous. |
minutely glandular. |
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, adaxial lip white, sometimes yellow, throat and abaxial limb red-spotted, bilaterally symmetric, weakly bilabiate; tube-throat funnelform, 8–12 mm, exserted beyond calyx margin; limb broadly expanded, lobes 2-fid, palate villous. |
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. |
(5–)7–20(–30) mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
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. |
red-dotted, strongly angled, cylindric-campanulate, (5–)7–12 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading. |
Capsules | included, 6–7 mm. |
included, 4–6 mm. |
Anthers | included, glabrous. |
included, margins ciliate, glabrous. |
Erythranthe nudata |
Erythranthe bicolor |
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Phenology | Flowering Apr–Jun. | Flowering Apr–Jun. |
Habitat | Open gravelly seeps on serpentine outcrops, serpentine crevices, springs, streamsides, gravelly creek beds, roadside drainages and swales. | Moist banks, serpentine and granite outcrops, seepage areas, volcanic mudflows, open red clay exposures. |
Elevation | 200–700 m. (700–2300 ft.) | (100–)400–1700(–2500) m. ((300–)1300–5600(–8200) ft.) |
Distribution |
CA
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CA
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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.) |
Erythranthe bicolor ranges from Shasta and Trinity counties south to Tulare County; the identity of apparently disjunct populations in San Bernardino County needs to be reexamined. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 417. | FNA vol. 17, p. 390. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus nudatus | Mimulus bicolor |
Name authority | (Curran ex Greene) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) | (Hartweg ex Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012) |
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