Diplacus layneae |
Diplacus traskiae |
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Layne's monkeyflower |
Santa Catalina Island 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, 80–120 mm, glandular-pubescent. |
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, nearly even-sized or enlarging distally; petiole absent or with petiole-like extension; blade ovate to obovate, 12–41 × 5–21 mm, margins entire or crenate, plane, usually ciliate proximally, apex obtuse, surfaces glandular-pubescent. |
Pedicels | 2–4(–5) mm in fruit. |
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. |
puberulent distally. |
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. |
throat magenta, abaxial lip magenta, adaxial lip whitish, palate ridges not seen, tube-throat 20–23 mm, limb 4–5 mm diam., bilabiate, lobes of abaxial lip smaller than adaxial. |
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. |
distinctly asymmetrically attached to pedicel, not inflated in fruit, 18–21 mm, glandular-pubescent, lobes subequal, apex acute, ribs usually green, intercostal areas whitish. |
Capsules | 6–10(–13) mm. |
not seen. |
Anthers | included, ciliate. |
(distal pair) nearly exserted, glabrous. |
Stigmas | included, lobes unequal, abaxial 1.5 times adaxial. |
exserted, lobes unequal, abaxial 6–8 times adaxial. |
2n | = 16. |
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Diplacus layneae |
Diplacus traskiae |
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Phenology | Flowering May–Aug. | Flowering Mar–Apr. |
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. | Rocky, brushy slopes. |
Elevation | (100–)400–2400 m. ((300–)1300–7900 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
CA
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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.) |
Diplacus traskiae is known only from Santa Catalina Island. According to the California Native Plant Society Online Inventory of Rare and Endangered Plants, ed. 8 (http://www.cnps.org/cnps/rareplants/inventory/), it (as Mimulus traskiae) is possibly extirpated. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 437. | FNA vol. 17, p. 446. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Synonyms | Eunanus layneae, Mimulus brachiatus, M. layneae | Mimulus traskiae |
Name authority | (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 32. (2012) |
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