Diplacus bigelovii |
Diplacus congdonii |
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Bigelow mimulus, Bigelow's monkeyflower |
Congdon's monkeyflower |
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Habit | Herbs, annual, herbage usually drying dark. | Herbs, annual. | ||||
Stems | erect, (10–)20–250(–320) mm, nodes 3–6, internodes 1–6 mm, glandular-pubescent to glandular-villous. |
erect to ascending, 0–100(–120) mm, glandular-puberulent and/or glandular-pubescent. |
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Leaves | usually cauline, relatively even-sized or reduced distally; petiole absent, bases of largest leaves often long-tapered to petiole-like extensions; blade obovate, elliptic, or oblanceolate, (5–)7–35(–50) × (2–)3–18(–26) mm, margins entire, rarely toothed, plane, apex abruptly acuminate, acute-acuminate, or cuspidate to long-tapering or long-acuminate, surfaces glandular-pubescent. |
usually cauline, relatively even-sized; petiole absent, larger with petiole-like extension; blade oblanceolate to elliptic, (4–)8–32(–37) × (1.5–)2.5–14(–18) mm, margins entire or crenate, plane, apex obtuse, surfaces glabrous or puberulent and/or pilose adaxially. |
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Pedicels | 1–4(–8) mm in fruit. |
(1–)2–5 mm in fruit, usually twisting to invert calyx. |
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Flowers | 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
2 per node, or 1 or 2 per node on 1 plant, chasmogamous or cleistogamous. |
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Styles | glandular-puberulent. |
glandular-pubescent. |
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Corollas | magenta with dark reddish spot on each side of mouth on interior lateral walls of throat, usually with reddish lines extending from throat onto midveins of lobes, throat floor yellow with reddish speckling and variable reddish markings, palate ridges yellow, tube-throat (9–)12–22 mm, limb 12–24 mm diam., not bilabiate. |
throat whitish to dark magenta, not golden yellow at base, lobes magenta, without markings or with dark magenta dots and, sometimes, some yellow at bases of abaxial lobes, palate ridges absent or purple, tube-throat 8–30 mm, limb 3–9 mm diam., bilabiate, abaxial lobe usually smaller than adaxial. |
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Calyces | symmetrically attached to pedicels, inflated in fruit, 6–13(–15) mm, glandular-pubescent, tube strongly plicate, lobes slightly recurved, narrowly triangular, subequal, often slightly indurate, apex acuminate to attenuate, ribs broad, darkened, blackish, thickened, strongly raised, intercostal areas whitish, membranous. |
distinctly asymmetrically attached to pedicel, inflated in fruit, 5–14 mm, sparsely pilose, lobes subequal, apex obtuse, ribs green to purplish, intercostal areas whitish. |
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Capsules | (6–)7–13(–15) mm. |
4–8.5 mm, indehiscent. |
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Anthers | included, glabrous, sometimes ciliate. |
(distal pair) exserted, glabrous. |
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Stigmas | included, lobes equal. |
exserted, lobes unequal, abaxial 3–4 times adaxial. |
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2n | = 18. |
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Diplacus bigelovii |
Diplacus congdonii |
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Phenology | Flowering Feb–May. | |||||
Habitat | Serpentine soils, periphery of granite outcrops, disturbed hillsides, soil from decomposed granite, near water runoff areas, away from seeps or other areas with prolonged surface moisture. | |||||
Elevation | 100–1100(–1700) m. (300–3600(–5600) ft.) | |||||
Distribution |
AZ; CA; NV; UT
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CA
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Discussion | Varieties 2 (2 in the flora). Diplacus bigelovii is distributed in southeastern California from southern Mono County south to Imperial and San Diego counties through southern Nevada into Washington County, Utah, and La Paz and Mohave counties, Arizona. The relatively sharp line dividing the two varieties roughly follows the Inyo-San Bernardino county line, then cuts across Clark County, Nevada, and Mojave County, Arizona. Diplacus bigelovii can generally be recognized by its relatively large, nearly radially symmetric corollas, included stigmas, and inflated mature calyces with lobes of unequal length and apices acuminate-attenuate. The two varieties have distinctive leaf shapes; D. M. Thompson (2005) reported them as very closely parapatric and exhibiting limited intergradation near their contiguous occurrence. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Diplacus congdonii occurs in the Sierra Nevada Foothills and mountain ranges along the coast. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 434. | FNA vol. 17, p. 445. | ||||
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Eunanus bigelovii, Mimulus bigelovii | Mimulus congdonii | ||||
Name authority | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 28. (2012) | (B. L. Robinson) G. L. Nesom: Phytoneuron 2012-39: 32. (2012) | ||||
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