Diplacus layneae |
Diplacus linearis |
|
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Layne's monkeyflower |
chaparral bush monkeyflower, Monterey monkeyflower |
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Habit | Herbs, annual, herbage usually drying dark. | Subshrubs. |
Stems | erect, 30–160(–300) mm, nodes 3–6, glandular-puberulent to glandular-pubescent, hairs 0.2–0.8 mm. |
erect, 300–800(–1200) mm, minutely hirtellous to hirsutulous with slightly deflexed, eglandular hairs. |
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. |
cauline, relatively even-sized; petiole absent; blade narrowly elliptic to narrowly lanceolate or narrowly elliptic-oblong, 12–37 × 3–9 mm, margins entire, serrulate, or mucronulate, plane or revolute, apex usually obtuse to rounded, surfaces glabrous. |
Pedicels | 2–4(–5) mm in fruit. |
3–10 mm in fruit. |
Flowers | 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
(1 or)2 per node, chasmogamous. |
Styles | glandular-puberulent. |
minutely glandular. |
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. |
yellow-orange to dull orange, not spotted or striped, palate ridges yellow, tube-throat 35–45 mm, limb 20–25 mm diam., bilabiate, lobes oblong, each apically incised 1/4–1/2 length, appearing 2-lobed. |
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. |
not inflated in fruit, 20–28 mm, glabrous, tube slightly dilated distally, lobes unequal to subequal, apex acute. |
Capsules | 6–10(–13) mm. |
18–30 mm. |
Anthers | included, ciliate. |
included, glabrous. |
Stigmas | included, lobes unequal, abaxial 1.5 times adaxial. |
included, lobes equal. |
2n | = 16. |
= 20. |
Diplacus layneae |
Diplacus linearis |
|
Phenology | Flowering May–Aug. | Flowering Apr–Jun. |
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 hillsides, rock outcrops. |
Elevation | (100–)400–2400 m. ((300–)1300–7900 ft.) | 100–300 m. (300–1000 ft.) |
Distribution |
CA
|
CA |
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.) |
The coastal Diplacus linearis (as Mimulus bifidus subsp. fasciculatus) was allied by F. W. Pennell (1947) with the Sierran D. grandiflorus (as M. bifidus subsp. typicus) as a narrower-leaved and smaller-flowered subspecies; see discussion concerning its distribution under 40. D. grandiflorus. The two were considered synonymous by D. M. Thompson (2005). They are distinct in geography, ecology, and morphology. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 437. | FNA vol. 17, p. 449. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Eunanus layneae, Mimulus brachiatus, M. layneae | Mimulus linearis, D. fasciculatus, D. longiflorus var. linearis, M. bifidus subsp. fasciculatus, M. glutinosus var. linearis, M. longiflorus var. linearis |
Name authority | (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) | (Bentham) Greene: Pittonia 2: 156. (1890) |
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