Diplacus layneae |
Diplacus bolanderi |
|
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Layne's monkeyflower |
Bolander's 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, 20–900(–1200) mm, usually glandular-pubescent and viscid. |
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. |
basal and cauline, basal in rosette, cauline gradually reduced distally; petiole present proximally, usually absent distally; blade ovate, obovate, elliptic, or oblanceolate, 5–60(–85) × 1.5–25(–32) mm, margins entire or largest irregularly serrate, plane, apex rounded to obtuse, surfaces: proximals nearly glabrous, distals glandular-pubescent. |
Pedicels | 2–4(–5) mm in fruit. |
2–5(–8) 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 (1 per node on depauperate plants), 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, throat often darkening near floor, without dark spots, palate ridges or floor white, usually magenta-speckled, tube-throat 10–30 mm, limb 6–20 mm diam., not 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, inflated in fruit, (7–)9–25(–27) mm, glandular-pubescent and viscid, lobes often spreading in fruit, unequal if calyx large, apex acute to attenuate, ribs prominent, purplish, intercostal areas white. |
Capsules | 6–10(–13) mm. |
8–20 mm. |
Anthers | included, ciliate. |
included, glabrous. |
Stigmas | included, lobes unequal, abaxial 1.5 times adaxial. |
exserted, lobes unequal, abaxial 2–3 times adaxial. |
2n | = 16. |
= 16. |
Diplacus layneae |
Diplacus bolanderi |
|
Phenology | Flowering May–Aug. | Flowering Apr–Jul. |
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. | Granite outcrops, slopes with decomposed granite soils. |
Elevation | (100–)400–2400 m. ((300–)1300–7900 ft.) | (100–)300–1700(–2000) m. ((300–)1000–5600(–6600) ft.) |
Distribution |
CA
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CA; OR
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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.) |
Diplacus bolanderi is scattered and uncommon through most of California (with concentrations in the southern North Coast Ranges and Central Sierra) and apparently is disjunct in Jackson County, Oregon. Diplacus bolanderi is highly variable in height, leaf size, corolla size, and calyx size. Identity is unmistakable in larger plants; the inflated calyx with lobes strongly unequal in length usually is helpful in identification of smaller plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 437. | FNA vol. 17, p. 434. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Eunanus layneae, Mimulus brachiatus, M. layneae | Mimulus bolanderi, M. platylaemus |
Name authority | (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 28. (2012) |
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