Diplacus tricolor |
Diplacus vandenbergensis |
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tricolor monkeyflower |
Vandenberg 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, 10–200(–240) mm, glandular-puberulent or glandular-pubescent. |
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. |
basal and cauline, basal in rosette, cauline reduced distally; petiole absent; blade narrowly elliptic, sometimes obovate to oblanceolate, 2–30(–55) × 1–10(–16) mm, margins entire, sometimes crenate to serrate, plane, not ciliate, apex rounded to acute, surfaces: proximals glabrous, distals glandular-puberulent or glandular-pubescent. |
Pedicels | 1–3(–5) mm in fruit. |
1–4(–7 on proximal) mm in fruit. |
Flowers | 1 per node, chasmogamous. |
1 per node, chasmogamous. |
Styles | usually glandular-puberulent. |
minutely 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. |
yellow with reddish brown spots near mouth, palate ridges yellow, throat floor puberulent, tube-throat (9–)10–23 mm, limb 8–26 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. |
inflated in fruit, 5–14 mm, glandular-puberulent to glandular-pubescent or ribs almost tomentose and viscid, lobes subequal, apex rounded and apiculate or acute, intercostal areas white. |
Capsules | (2–)3–8(–10) mm, indehiscent. |
6.5–13(–14) mm. |
Anthers | included, with apical tufts of short, eglandular hairs. |
included, glabrous, rarely minutely puberulent. |
Stigmas | nearly exserted, lobes subequal. |
included, lobes equal. |
2n | = 18. |
= 16. |
Diplacus tricolor |
Diplacus vandenbergensis |
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Phenology | Flowering Mar–Jul(–Aug). | Flowering Apr–Jun. |
Habitat | Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. | Sandy open or disturbed areas, among shrubs. |
Elevation | 50–1500 m. (200–4900 ft.) | 70–150 m. (200–500 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.) |
Diplacus vandenbergensis is endemic to Santa Barbara County, mostly on the north side of the city of Lompoc (La Purisima Mission State Historic Park; also on and near Vandenberg Air Force Base) plus one other locality about 10 kilometers farther west (Santa Ynez Valley, 8 miles west of Buellton). Thompson described Mimulus fremontii var. vandenbergensis as a geographically distinct variant of M. fremontii. The discontinuous morphological difference, allopatric/parapatric geographical distribution, and lack of intergrading populations support recognition of the plants with yellow corollas at specific rank. Plants with yellow corollas are found in D. bicolor, D. mephiticus, and D. parryi, but these morphs are found through most of the geographic ranges of these taxa and sometimes are intermixed in populations. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 447. | FNA vol. 17, p. 432. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus tricolor | Mimulus fremontii var. vandenbergensis |
Name authority | (Hartweg ex Lindley) G. L. Nesom: Phytoneuron 2012-39: 30. (2012) | (D. M. Thompson) G. L. Nesom: Phytoneuron 2012-47: 2. (2012) |
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