Diplacus johnstonii |
Diplacus ovatus |
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Johnston's monkeyflower |
Carson monkeyflower, eggleaf monkeyflower, steamboat monkeyflower |
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Habit | Herbs, annual. | Herbs, annual. |
Stems | erect, (10–)30–200(–300) mm, densely glandular-puberulent. |
erect to ascending, 20–140 mm, distal internodes 1–3 mm, glandular-pubescent and short glandular-villous. |
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 or slightly reduced distally; petiole absent, base sometimes tapered to narrow, petiole-like extension; blade obovate to broadly oblanceolate, 13–33 × 5–12(–16) mm, margins entire, plane, apex acuminate, surfaces densely glandular-villous. |
Pedicels | 1–4(–5) mm in fruit. |
2–3(–5) 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. |
glandular-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. |
magenta to red-purple with a yellow patch on palate, sometimes yellow with a red-brown patch, palate ridges orange-yellow, tube-throat 9–11 mm, limb 12–15 mm diam., 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, not inflated in fruit, 7–9(–10) mm, coarsely glandular-pubescent, lobes subequal, apex lanceolate to narrowly lanceolate, ribs purplish, intercostal areas white. |
Capsules | 7–12 mm. |
6–8 mm. |
Anthers | included, glabrous. |
exserted, sparsely hirsutulous. |
Stigmas | exserted or at opening of corolla tube-throat, lobes equal. |
exserted, lobes subequal. |
2n | = 16. |
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Diplacus johnstonii |
Diplacus ovatus |
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Phenology | Flowering May–Aug. | Flowering Apr–Jun(–Aug). |
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. | Dry to moist, often barren, loose, sandy to gravelly slopes, andesite or rhyolite deposits, sandy alkaline valley floors, roadsides, washes, sagebrush, pinyon-juniper, open yellow pine woodlands. |
Elevation | (1000–)1300–2900 m. ((3300–)4300–9500 ft.) | 1300–1900(–2400) m. (4300–6200(–7900) ft.) |
Distribution |
CA
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NV
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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.) |
Mimulus ovatus was treated as a distinct species by N. H. Holmgren (1984); the plants were considered by D. M. Thompson (2005) to be hybrids between M. nanus var. mephiticus and M. cusickii, and he placed the name as a synonym of M. cusickii. Diplacus ovatus is known only from Carson City, Douglas, and southern Washoe counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 433. | FNA vol. 17, p. 440. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Mimulus johnstonii | Mimulus bigelovii var. ovatus, M. ovatus |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 29; 2012-47: 3. (2012) |
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