Diplacus deschutesensis |
Diplacus rupicola |
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Deschutes monkeyflower |
Death Valley monkeyflower, rock midget |
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Habit | Herbs, annual. | Herbs, perennial, with woody caudex. |
Stems | erect to erect-ascending, 40–150 mm, distal internodes 1–2 mm, minutely glandular-puberulent. |
erect to ascending, sometimes pendent, 10–170 mm, densely and finely glandular-puberulent. |
Leaves | 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. |
usually basal rosettes and proximal cauline, relatively even-sized; petiole absent, base gradually narrowed to broad, petiole-like extension; blade oblanceolate, (10–)18–60(–80) × (1.5–)3–15(–26) mm, margins entire, plane, not ciliate, apex acute, surfaces glandular-puberulent. |
Pedicels | 1–1.5 mm in fruit. |
1–3 mm in fruit. |
Flowers | usually from proximalmost to distal nodes, 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
1 or 2 per node, chasmogamous. |
Styles | puberulent, at least on distal 1/2. |
glandular-puberulent. |
Corollas | 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. |
limb pinkish white to nearly white with a large magenta-purple round or 2-lobed blotch at base of each lobe, throat and palate ridges golden yellow with magenta speckling, palate ridges short-pilose, throat glabrous, tube-throat 17–35 mm, limb 8–21 mm diam., not bilabiate. |
Calyces | symmetrically attached to pedicels, not inflated in fruit, 7–8 mm, glandular-puberulent, lobes subequal, apex linear-acuminate, ribs green distally, intercostal areas whitish. |
asymmetrically attached to pedicel, not inflated in fruit, 8–18 mm, densely glandular-puberulent, lobes unequal, apex acuminate, ribs green, intercostal areas pale green. |
Capsules | 7–9 mm. |
3–8 mm, indehiscent until senescence of pedicel, then opening along both sutures only after wetting. |
Anthers | included, glabrous or sparsely hispidulous. |
included, glabrous or slightly puberulent at base. |
Stigmas | exserted, lobes subequal, abaxial slightly longer. |
included, lobes equal. |
2n | = 16. |
= 16. |
Diplacus deschutesensis |
Diplacus rupicola |
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Phenology | Flowering Jun–Aug. | Flowering Feb–Jun. |
Habitat | 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. | Crevices in limestone cliffs and walls, limestone ridge tops and slopes, wash edges, gravelly slopes, canyon sides. |
Elevation | 700–1500 m. (2300–4900 ft.) | 300–1800 m. (1000–5900 ft.) |
Distribution |
OR
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CA
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Discussion | 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.) |
Diplacus rupicola is known from Inyo County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 440. | FNA vol. 17, p. 448. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus rupicola | |
Name authority | G. L. Nesom: Phytoneuron 2013-65: 8, fig. 5. (2013) | (Coville & A. L. Grant) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 27. (2012) |
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