Flora of North America species comparison

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Diplacus layneae

Diplacus grandiflorus

Layne's monkeyflower

bush monkeyflower, notch-petaledbush monkey flower, Sierra bush monkeyflower, sticky monkeyflower
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, 400–700 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 elliptic or oblong-elliptic to elliptic-lanceolate or elliptic-oblanceolate, (10–)20–55 × 4–17 mm, margins entire, serrulate, or mucronulate, plane or revolute, apex obtuse or rounded to acute, surfaces glabrous.
Pedicels

2–4(–5) mm in fruit.

5–12 mm in fruit.
Flowers

2 per node, or 1 or 2 per node on 1 plant, chasmogamous.

2 per node, chasmogamous.
Styles

glandular-puberulent.

sparsely 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.

pale yellow or nearly white to pale orange or light yellow-orange, not spotted or striped, palate ridges yellow to golden yellow, tube-throat 35–45 mm, limb 30–45 mm diam., bilabiate, lobes 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, 20–30 mm, glabrous except for lobe apices, tube slightly dilated distally, lobes subequal, apex acute.
Capsules

6–10(–13) mm.

15–25 mm.
Anthers

included, ciliate.

included, glabrous.
Stigmas

included, lobes unequal, abaxial 1.5 times adaxial.

included, lobes equal.
2n

= 16.

= 20.

Diplacus layneae

Diplacus grandiflorus
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. Rock walls, dry rocky soils.
Elevation (100–)400–2400 m. ((300–)1300–7900 ft.) 100–1600 m. (300–5200 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
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 grandiflorus (central Sierran) and D. linearis (coastal) are remarkably similar; it seems likely that they are vicariants. Leaves of D. linearis are narrower, and the nodes tend to be considerably more crowded. Corollas of D. linearis have narrower limbs, and both pairs of anthers and the stigma are at the same level and relatively deeply included. In D. grandiflorus, the anther pairs are separated, and the stigma is above the distal anther pair at or near the throat opening.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 437. FNA vol. 17, p. 448.
Parent taxa Phrymaceae > Diplacus Phrymaceae > Diplacus
Sibling taxa
D. angustatus, D. aridus, D. aurantiacus, D. bicolor, D. bigelovii, D. bolanderi, D. brandegeei, D. brevipes, D. calycinus, D. cascadensis, D. clevelandii, D. clivicola, D. compactus, D. congdonii, D. constrictus, D. cusickii, D. cusickioides, D. deschutesensis, D. douglasii, D. fremontii, D. grandiflorus, D. graniticola, D. jepsonii, D. johnstonii, D. kelloggii, D. leptaleus, D. linearis, D. longiflorus, D. mephiticus, D. mohavensis, D. nanus, D. ovatus, D. parryi, D. parviflorus, D. pictus, D. pulchellus, D. puniceus, D. pygmaeus, D. rattanii, D. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
D. angustatus, D. aridus, D. aurantiacus, D. bicolor, D. bigelovii, D. bolanderi, D. brandegeei, D. brevipes, D. calycinus, D. cascadensis, D. clevelandii, D. clivicola, D. compactus, D. congdonii, D. constrictus, D. cusickii, D. cusickioides, D. deschutesensis, D. douglasii, D. fremontii, D. graniticola, D. jepsonii, D. johnstonii, D. kelloggii, D. layneae, D. leptaleus, D. linearis, D. longiflorus, D. mephiticus, D. mohavensis, D. nanus, D. ovatus, D. parryi, D. parviflorus, D. pictus, D. pulchellus, D. puniceus, D. pygmaeus, D. rattanii, D. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
Synonyms Eunanus layneae, Mimulus brachiatus, M. layneae D. glutinosus var. grandiflorus, D. longiflorus var. grandiflorus, Mimulus aurantiacus var. grandiflorus, M. bifidus
Name authority (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) Groenland: Rev. Hort. 6: 402, fig. 136. (1857)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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