Flora of North America species comparison

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Diplacus mephiticus

Diplacus angustatus

foul odor monkeyflower, skunky monkeyflower

narrow leaf pansy monkeyflower, narrow-leaf or purple-lip pansy monkeyflower, purplelip pansy monkeyflower
Habit Herbs, annual. Herbs, annual, acaulescent or caulescent.
Stems

erect, (20–)30–150(–180) mm, glandular-pubescent and viscid-villous.

erect, 0 or 20–70 mm, eglandular-puberulent.
Leaves

usually cauline, relatively even-sized;

petiole absent;

blade ovate to oblong or narrowly elliptic to narrowly lanceolate, narrowly oblong, or linear, 10–25 × 1–5 mm, margins entire, plane, not ciliate, apex rounded to obtuse or acute, surfaces usually glandular-pubescent and (at least along veins) viscid-villous.

basal densely clustered;

petiole absent;

blade narrowly lanceolate or elliptic to linear, (3.5–)5–36 × 0.5–3.8(–5) mm, margins entire, plane, proximal 1/2+ ciliate, apex obtuse, surfaces glabrous.
Pedicels

1–3 mm in fruit.

0–1 mm in fruit.
Flowers

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

1 per node, chasmogamous.
Styles

glabrous or sparsely glandular-puberulent.

glandular-puberulent.
Corollas

of 2 color forms: (a) dark magenta, purplish, or reddish with palate ridges or whole throat floor yellow, red- or purple-dotted, lateral lobes yellowish inside and (b) yellow with red or purple spots on floor, tube-throat 8–12(–15) mm, tube 1.3–1.9 mm diam. at filament insertion, limb 5–12(–15) mm diam., bilabiate.

throat and limb magenta to purple with a dark maroon-purple spot or elongate blotch at base of each abaxial lobe, palate ridges and base of abaxial lip yellow, tube-throat 20–60 mm, limb 10–20 mm diam., bilabiate, lobes equal.
Calyces

symmetrically attached to pedicels, slightly inflated in fruit, (3–)4–7(–9) mm, glandular-pubescent and viscid-villous (at least along veins), lobes subequal, apex acute to acuminate, ribs dark green to purplish, intercostal areas whitish.

slightly asymmetrically attached to pedicel, inflated in fruit, (4–)7–14(–17) mm, pilose, lobes subequal, apex obtuse, ribs becoming reddish, intercostal areas pale green to whitish.
Capsules

5–8 mm.

2–4.5 mm, indehiscent.
Anthers

exserted, short-hirsute.

(distal pair) sometimes nearly exserted, hirsute with 2 apical tufts.
Stigmas

exserted or at opening of corolla tube-throat, lobes subequal to unequal, abaxial to 2 times adaxial.

usually exserted, lobes subequal.
2n

= 18.

Diplacus mephiticus

Diplacus angustatus
Phenology Flowering (May–)Jun–Aug(–Sep). Flowering Mar–May(–Jun).
Habitat Openings in sagebrush, disturbed slopes, granite outcrops, serpentine substrates, gravelly and sandy soils, sandy moraines, pumice flats, gravelly washes, meadows, shadscale and sagebrush communities, pinyon-juniper and ponderosa pine woodlands. Vernally flooded depressions or swales, summits of mesas or foothills.
Elevation 1300–3700 m. (4300–12100 ft.) 300–1200 m. (1000–3900 ft.)
Distribution
from FNA
CA; NV
[WildflowerSearch map]
from FNA
CA
[WildflowerSearch map]
Discussion

Diplacus mephiticus occurs in eastern California and west-central Nevada.

Various synonyms treated here are in agreement with D. M. Thompson (2005). Mimulus coccineus (mostly from Eldorado to Tulare counties, California, and, apparently, including Eunanus angustifolius Greene from Mt. Rose, Nevada) includes relatively small, tufted plants at high elevations with relatively small calyces and relatively small, dark red-purple, strongly bilabiate corollas with prominently exserted stamens. Mimulus densus (mostly in Nevada and in Lassen, Nevada, and Plumas counties, California) includes taller plants at lower elevations with a strong tendency to produce populations with all individuals with larger, yellow, nearly regular corollas with more nearly included stamens. Typical Diplacus mephiticus has moderate-sized plants at medium elevations with magenta, bilabiate corollas.

The specific epithet mephiticus alludes to the musky odor of the plants; this has also been noted in plants of Mimulus coccineus and M. densus. Diplacus nanus, in which D. M. Thompson (2005) included D. mephiticus as a variety, apparently does not produce a mephitic odor. Diplacus cusickii also produces a mephitic odor (W. L. Ezell 1971).

The later homonym Mimulus angustifolius (Greene) A. L. Grant 1925, not Hochstetter ex Richard 1850, based on Eunanus angustifolius, pertains here.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Diplacus angustatus occurs in northern California in the Sierra Nevada and across the Sacramento Valley in the North Coast Range (Lake, Mendocino, and Napa counties); it also is known from one area in northwestern Shasta County and has a disjunct series of populations in Fresno and Tulare counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 441. FNA vol. 17, p. 447.
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. layneae, D. leptaleus, D. linearis, D. longiflorus, 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. 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. 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 Mimulus mephiticus, M. coccineus, M. coccineus var. wolfii, M. densus, M. nanus var. mephiticus, M. reifschneiderae, M. stamineus, M. washoensis, M. wolfii Eunanus coulteri var. angustatus, E. angustatus, Mimulus angustatus, M. tricolor var. angustatus
Name authority (Greene) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 30. (2012)
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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