Diplacus layneae |
Diplacus ovatus |
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Layne's monkeyflower |
Carson monkeyflower, eggleaf monkeyflower, steamboat monkeyflower |
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Habit | Herbs, annual, herbage usually drying dark. | Herbs, annual. |
Stems | erect, 30–160(–300) mm, nodes 3–6, glandular-puberulent to glandular-pubescent, hairs 0.2–0.8 mm. |
erect to ascending, 20–140 mm, distal internodes 1–3 mm, glandular-pubescent and short glandular-villous. |
Leaves | usually cauline, relatively even-sized; petiole weakly delimited; blade elliptic to narrowly elliptic, oblanceolate, elliptic-oblanceolate, or elliptic-lanceolate, 8–27(–35) × 2–8 mm, margins entire, rarely toothed, plane, apex rounded to obtuse, surfaces: proximals often glabrate, distals glandular-puberulent or glandular-pubescent. |
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 | 2–4(–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 | glandular-puberulent. |
glandular-puberulent. |
Corollas | pinkish or pale to dark magenta or red-purple, each lobe usually with a faint to dark medial line extending 1/2 or less to tip, throat floor yellowish near base, mostly white with red-purple dots near mouth, palate ridges white, tube-throat 10–15 mm, limb (8–)10–16 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, (5–)6–8(–9) mm, glandular-puberulent to glandular-pubescent, tube strongly plicate, lobes triangular, subequal, apex acute, ribs broad, darkened, blackish, thickened, strongly raised, intercostal areas whitish, membranous. |
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 | 6–10(–13) mm. |
6–8 mm. |
Anthers | included, ciliate. |
exserted, sparsely hirsutulous. |
Stigmas | included, lobes unequal, abaxial 1.5 times adaxial. |
exserted, lobes subequal. |
2n | = 16. |
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Diplacus layneae |
Diplacus ovatus |
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Phenology | Flowering May–Aug. | Flowering Apr–Jun(–Aug). |
Habitat | Road banks, serpentine, granitic sand, red clay, lava beds and volcanic soils, openings in chaparral, shallow dry streambeds or stream banks, burned or otherwise disturbed open areas. | 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 | (100–)400–2400 m. ((300–)1300–7900 ft.) | 1300–1900(–2400) m. (4300–6200(–7900) ft.) |
Distribution |
CA
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NV
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Discussion | D. M. Thompson (2005) observed that two forms of Diplacus layneae co-occur from the Yosemite National Park area southward; one of these is recognized here as D. graniticola. (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. 437. | FNA vol. 17, p. 440. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Eunanus layneae, Mimulus brachiatus, M. layneae | Mimulus bigelovii var. ovatus, M. ovatus |
Name authority | (Greene) 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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