Diplacus johnstonii |
Diplacus thompsonii |
|
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Johnston's monkeyflower |
Thompson's monkeyflower |
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Habit | Herbs, annual. | Herbs, annual, herbage usually drying dark. |
Stems | erect, (10–)30–200(–300) mm, densely glandular-puberulent. |
erect, 30–150 mm, nodes 3–6, internodes 1–6 mm, glandular-puberulent. |
Leaves | basal and cauline, gradually reduced distally; petiole absent, bases of larger leaves often with petiole-like extensions; blade obovate or oblanceolate, sometimes elliptic, (4.5–)7–25(–32) × 2–12(–15) mm, margins entire, plane, apex rounded to acute, surfaces densely glandular-puberulent. |
usually cauline, relatively even-sized; petiole absent, proximal base narrowed to petiole-like extension; blade lanceolate or narrowly lanceolate to elliptic-lanceolate, 7–30 × 2–7 mm, margins entire, plane, apex acute, surfaces glandular-puberulent. |
Pedicels | 1–4(–5) mm in fruit. |
1–3 mm in fruit. |
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. |
Styles | densely glandular-puberulent distally. |
puberulent. |
Corollas | magenta, darker and more reddish in throat and, often, along narrow radiating lines extending from throat onto midveins of lobes, throat usually with a large dark spot on each side of mouth on lateral walls, palate ridges and throat floor yellow with reddish spots, tube-throat 9–15 mm, limb 10–15 mm diam., not bilabiate. |
dark magenta to red-purple, throat floor yellowish and red-dotted, with a red-purple midvein radiating onto base of each lobe of proximal lip, palate ridges yellow, tube-throat 10–14 mm, limb 6–10 mm diam., not bilabiate. |
Calyces | symmetrically attached to pedicels, not inflated in fruit, (6–)7–11 mm, glandular-puberulent, lobes unequal, apex acute to acuminate, ribs inconspicuous, intercostal areas reddish. |
symmetrically attached to pedicels, inflated in fruit, 7–9 mm, glandular-villous, tube strongly plicate, lobes narrowly triangular, subequal, apex acuminate to attenuate, ribs broad, darkened, blackish, thickened, strongly raised, intercostal areas whitish, membranous. |
Capsules | 7–12 mm. |
7–9 mm. |
Anthers | included, glabrous. |
included, ciliate. |
Stigmas | exserted or at opening of corolla tube-throat, lobes equal. |
included, lobes subequal. |
2n | = 16. |
= 16. |
Diplacus johnstonii |
Diplacus thompsonii |
|
Phenology | Flowering May–Aug. | Flowering May–Jul. |
Habitat | Steep, unstable scree slides, talus slopes, gravel slides, cracks in granite cliffs, ridges, washes, steep sand and gravel slopes, canyon bottoms, gravelly road banks, recent burns, desert scrub, chaparral, juniper, pinyon-juniper, lodgepole pine, yellow pine, Jeffrey pine, and Jeffrey pine-western white pine-fir woodlands. | Granitic soils and sands, sandy loam, outwash slopes, dry sagebrush flats, pinyon and Jeffrey pine woodlands. |
Elevation | (1000–)1300–2900 m. ((3300–)4300–9500 ft.) | 1800–2600(–3000) m. (5900–8500(–9800) ft.) |
Distribution |
CA
|
CA |
Discussion | Populations of Diplacus johnstonii occur in Los Angeles, Riverside, San Bernardino, Santa Barbara, and Ventura counties. The populations in northwestern Los Angeles, Santa Barbara, and Ventura counties were noted by D. M. Thompson (2005) to be intermediate between D. constrictus and D. johnstonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Diplacus thompsonii is abundant along the eastern side of the Sierra Nevada in Inyo and southern Mono counties. D. M. Thompson (2005) identified these populations as intermediate between Mimulus nanus var. mephiticus and M. bigelovii; diagnostic features are more similar to those of the latter, especially the inflated and strongly wing-angled calyx and the non-bilabiate corollas. The range of D. thompsonii is within the northern limit of D. bigelovii var. cuspidatus, which is different in leaf morphology. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 433. | FNA vol. 17, p. 435. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus johnstonii | |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) | G. L. Nesom: Phytoneuron 2013-46: 1, figs. 2, 3. (2013) |
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