Diplacus tricolor |
Diplacus layneae |
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tricolor monkeyflower |
Layne's monkeyflower |
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Habit | Herbs, annual, acaulescent or caulescent. | Herbs, annual, herbage usually drying dark. |
Stems | erect or ascending, 10–140(–170) mm, densely glandular-puberulent. |
erect, 30–160(–300) mm, nodes 3–6, glandular-puberulent to glandular-pubescent, hairs 0.2–0.8 mm. |
Leaves | basal densely clustered; petiole absent; blade narrowly elliptic to oblanceolate, (5–)8–45(–60) × (1–)3–12(–20) mm, margins entire, sometimes toothed, plane, not ciliate, apex obtuse, surfaces glandular-puberulent. |
usually cauline, relatively even-sized; petiole weakly delimited; blade elliptic to narrowly elliptic, oblanceolate, elliptic-oblanceolate, or elliptic-lanceolate, 8–27(–35) × 2–8 mm, margins entire, rarely toothed, plane, apex rounded to obtuse, surfaces: proximals often glabrate, distals glandular-puberulent or glandular-pubescent. |
Pedicels | 1–3(–5) mm in fruit. |
2–4(–5) mm in fruit. |
Flowers | 1 per node, chasmogamous. |
2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
Styles | usually glandular-puberulent. |
glandular-puberulent. |
Corollas | tricolored, limb and throat magenta to purple, each lobe with a discrete, dark maroon-purple blotch at base, all 3 blotches of abaxial lip round and not usually extending into throat, palate ridges yellow, flanked with white, sometimes purple-spotted, tube-throat (13–)15–50 mm, limb 7–21 mm diam., bilabiate, lobes equal. |
pinkish or pale to dark magenta or red-purple, each lobe usually with a faint to dark medial line extending 1/2 or less to tip, throat floor yellowish near base, mostly white with red-purple dots near mouth, palate ridges white, tube-throat 10–15 mm, limb (8–)10–16 mm diam., not bilabiate. |
Calyces | slightly asymmetrically attached to pedicel, not inflated in fruit, (6–)11–23 mm, densely glandular-puberulent, lobes subequal, apex obtuse, ribs often purplish proximally, intercostal areas whitish. |
symmetrically attached to pedicels, not inflated in fruit, (5–)6–8(–9) mm, glandular-puberulent to glandular-pubescent, tube strongly plicate, lobes triangular, subequal, apex acute, ribs broad, darkened, blackish, thickened, strongly raised, intercostal areas whitish, membranous. |
Capsules | (2–)3–8(–10) mm, indehiscent. |
6–10(–13) mm. |
Anthers | included, with apical tufts of short, eglandular hairs. |
included, ciliate. |
Stigmas | nearly exserted, lobes subequal. |
included, lobes unequal, abaxial 1.5 times adaxial. |
2n | = 18. |
= 16. |
Diplacus tricolor |
Diplacus layneae |
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Phenology | Flowering Mar–Jul(–Aug). | Flowering May–Aug. |
Habitat | Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. | Road banks, serpentine, granitic sand, red clay, lava beds and volcanic soils, openings in chaparral, shallow dry streambeds or stream banks, burned or otherwise disturbed open areas. |
Elevation | 50–1500 m. (200–4900 ft.) | (100–)400–2400 m. ((300–)1300–7900 ft.) |
Distribution |
CA; OR
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CA
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Discussion | Diplacus tricolor occurs in northwestern and south-central Oregon and from there across a disjunction to central California as far as Kern County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
D. M. Thompson (2005) observed that two forms of Diplacus layneae co-occur from the Yosemite National Park area southward; one of these is recognized here as D. graniticola. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 447. | FNA vol. 17, p. 437. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus tricolor | Eunanus layneae, Mimulus brachiatus, M. layneae |
Name authority | (Hartweg ex Lindley) G. L. Nesom: Phytoneuron 2012-39: 30. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) |
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