Diplacus tricolor |
Diplacus deschutesensis |
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tricolor monkeyflower |
Deschutes monkeyflower |
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Habit | Herbs, annual, acaulescent or caulescent. | Herbs, annual. |
Stems | erect or ascending, 10–140(–170) mm, densely glandular-puberulent. |
erect to erect-ascending, 40–150 mm, distal internodes 1–2 mm, minutely glandular-puberulent. |
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 or gradually larger distally; petiole absent, proximal base short petiole-like; blade broadly ovate or obovate to elliptic-ovate or elliptic-oblanceolate, 10–15(–25) × 4–13 mm, margins entire, plane, apex acuminate or cuspidate, surfaces glabrous or sparsely glandular-puberulent. |
Pedicels | 1–3(–5) mm in fruit. |
1–1.5 mm in fruit. |
Flowers | 1 per node, chasmogamous. |
usually from proximalmost to distal nodes, 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
Styles | usually glandular-puberulent. |
puberulent, at least on distal 1/2. |
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. |
light pink to magenta or rose purple, usually with a darker narrow line extending from throat onto each lobe midvein, throat yellow, palate ridges yellow, tube-throat 8–12 mm, limb 10–16 mm diam., 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, 7–8 mm, glandular-puberulent, lobes subequal, apex linear-acuminate, ribs green distally, intercostal areas whitish. |
Capsules | (2–)3–8(–10) mm, indehiscent. |
7–9 mm. |
Anthers | included, with apical tufts of short, eglandular hairs. |
included, glabrous or sparsely hispidulous. |
Stigmas | nearly exserted, lobes subequal. |
exserted, lobes subequal, abaxial slightly longer. |
2n | = 18. |
= 16. |
Diplacus tricolor |
Diplacus deschutesensis |
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Phenology | Flowering Mar–Jul(–Aug). | Flowering Jun–Aug. |
Habitat | Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. | Sandy and ashy soils, pumice sand and gravel, red clay slopes, hillsides, roadsides, bare areas, sagebrush, sagebrush-juniper, juniper, yellow pine and lodgepole pine forests. |
Elevation | 50–1500 m. (200–4900 ft.) | 700–1500 m. (2300–4900 ft.) |
Distribution |
CA; OR
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OR
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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.) |
Diplacus deschutesensis is endemic to Crook, Deschutes, Jefferson, Klamath, Lake, and Wheeler counties of central Oregon. D. M. Thompson (2005) regarded these plants as a zone of stabilized hybrids, intermediate between Mimulus cusickii and typical M. nanus, the range just outside and west of the wider range of typical M. cusickii. In an earlier study that included both of the latter species, W. L. Ezell (1971, and by annotation in 1987) identified the same set of plants simply as M. cusickii, not associating them at all with M. nanus. A. L. Grant (1924, and by annotation of MO collections) identified them variously as either M. cusickii or M. ovatus. Thompson did not say what features of intermediacy he observed in the putative hybrids, but he did note that they produced leaves with acuminate-cuspidate apices and that they would key to M. cusickii. Leaves of Diplacus deschutesensis are broad with abruptly and sharply acuminate apices like those of D. cusickii, and the corolla coloration also is similar. The flowers (calyx length, corolla tube-throat length, limb width) and capsules of D. deschutesensis are considerably smaller, and the distal leaves are smaller with glabrous surfaces. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 447. | FNA vol. 17, p. 440. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus tricolor | |
Name authority | (Hartweg ex Lindley) G. L. Nesom: Phytoneuron 2012-39: 30. (2012) | G. L. Nesom: Phytoneuron 2013-65: 8, fig. 5. (2013) |
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