Flora of North America species comparison

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Diplacus viscidus

Diplacus jepsonii

sticky monkeyflower, viscid monkeyflower

Jepson's monkeyflower
Habit Herbs, annual. Herbs, annual.
Stems

erect, (30–)60–370 mm, densely glandular-pubescent with viscid hairs.

erect, 10–150 mm, minutely glandular-puberulent.
Leaves

usually cauline, relatively even-sized or largest proximally and gradually reduced distally;

petiole absent;

blade obovate to narrowly elliptic, (4–)8–54(–70) × (2–)3–23 mm, margins entire or serrate, plane, apex obtuse to rounded, surfaces: proximals glabrous abaxially, distals glandular-pubescent.

usually cauline, relatively even-sized;

petiole absent;

blade narrowly elliptic-oblanceolate to narrowly oblanceolate, 6–22 × 1–5(–7) mm, margins entire, plane, apex acute to obtuse, surfaces glandular-puberulent to glandular-pubescent.
Pedicels

1–4(–5) mm in fruit.

1 mm in fruit.
Flowers

1 per node, chasmogamous.

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

glandular-puberulent.

glandular-puberulent or glandular-pubescent.
Corollas

lavender to magenta with diffuse dark markings on sides of darker tube-throat and with dark red-purple midveins on lobes extending from throat, lobes not dark at base, floor white or yellow, fading to white at mouth, palate ridges white or yellow fading to white distally, throat ceiling glabrous, tube-throat 10–20 mm, limb 8–20 mm diam., not bilabiate.

lavender-purple to rose purple, throat darker, palate ridges yellow, red-spotted, tube 0.8–1.2 mm diam. at filament insertion, tube-throat 7–10 mm, limb 5–7 mm diam., bilabiate.
Calyces

symmetrically attached to pedicels, inflated in fruit, (7–)8–15 mm, villous, hairs eglandular, lobes subequal, apex acute to attenuate, ribs and intercostal areas often reddish.

symmetrically attached to pedicels, not inflated in fruit, 3–5 mm, minutely puberulent, lobes subequal, apex acute to acuminate, ribs dark green to purplish, intercostal areas whitish.
Capsules

7–11 mm.

4–6 mm.
Anthers

included, ciliate.

exserted, sparsely hispidulous.
Stigmas

included, lobes unequal, abaxial 1.5 times adaxial.

exserted, lobes equal.
2n

= 16.

= 16.

Diplacus viscidus

Diplacus jepsonii
Phenology Flowering Apr–Jul. Flowering Jun–Aug.
Habitat Chaparral clearings and openings. Gentle slopes, sandy and volcanic soils, meadows in spruce-fir forests, openings among pines and in chaparral, shallow drainage areas, disturbed open areas.
Elevation 90–1300 m. (300–4300 ft.) (900–)1100–2500(–2800) m. ((3000–)3600–8200(–9200) ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; OR
[WildflowerSearch map]
Discussion

D. M. Thompson (2005) noted that Diplacus viscidus and D. compactus (as Mimulus viscidus var. compactus) are parapatric and may intergrade in central Mariposa County. The two taxa are distinguished by the presence or absence of dark stripes on the corolla lobe midveins, which are evident even on herbarium specimens. Thompson found that the two remained distinct when grown together in the greenhouse.

Diplacus viscidus is known from Amador, Calaveras, Eldorado, Mariposa, Merced, and Tuolumne counties; D. compactus continues south through Fresno, northern Kern, Madera, Mariposa, and Tulare counties.

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

D. M. Thompson (2005) treated Diplacus jepsonii as conspecific with D. nanus [as W. L. Ezell (1971) had done earlier] because of putative intergrades. In its typical form, D. jepsonii is immediately distinct in its narrower leaves, stems with well-separated proximal nodes, and smaller corollas with nearly filiform tubes. R. J. Meinke (1992), in a field and greenhouse study not cited by Thompson, found that D. jepsonii and D. nanus are distinct in morphology as well as in habitat and that the two do not grow intermixed in nature.

Diplacus jepsonii is known only from north-central California, southern Washoe County, Nevada, and southern Oregon. Putative outliers in the central Sierra Nevada are dubiously identified.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 432. FNA vol. 17, p. 442.
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. 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. 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. 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 viscidus, M. fremontii var. viscidus, M. subsecundus var. viscidus Mimulus jepsonii, M. microcarpus, M. nanus var. jepsonii
Name authority (Congdon) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (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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