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Cusick's monkey-flower

Cleveland's bush monkeyflower

Habit Herbs, annual. Herbs, perennial, sometimes rhizomatous.
Stems

erect to erect-ascending, 10–80 mm, distal internodes 2–20 mm, minutely glandular-puberulent.

erect, (200–)300–950(–1250) mm, glandular-villous.

Leaves

basal and cauline or usually cauline, relatively even-sized or gradually larger distally;

petiole absent, proximal base short petiole-like, 1–5 mm;

blade ovate to broadly elliptic-ovate, (10–)15–25(–35) × 4–17 mm, margins entire, plane, apex acuminate, surfaces glabrous or adaxial minutely glandular-puberulent.

basal and cauline, relatively even-sized;

petiole absent;

blade lanceolate to oblong-lanceolate or elliptic-lanceolate, 20–110(–130) × 5–33(–40) mm, margins dentate to serrate, plane or revolute, apex acute, surfaces finely pubescent-glandular.

Pedicels

1–1.5 mm in fruit.

2–4(–7) mm in fruit.

Flowers

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

2 per node, chasmogamous.

Styles

pubescent, at least on distal 1/2.

minutely glandular.

Corollas

magenta or rose purple, tube yellow, throat yellow, throat and distal tube red-spotted on floor, palate ridges yellow, tube-throat 13–16(–19) mm, limb 16–24 mm diam., bilabiate.

bright golden yellow, often with reddish brown speckling on throat floor, palate ridges yellow, tube-throat 21–40 mm, limb 25–30 mm diam., nearly regular, lobes obovate-oblong.

Calyces

symmetrically attached to pedicels, not inflated in fruit, 7–10 mm, glabrous or minutely stipitate-glandular, lobes unequal, apex linear-acuminate, sharp-pointed, ribs green distally, intercostal areas whitish.

not inflated in fruit, 20–35(–37) mm, densely glandular-pubescent, tube slightly dilated distally, lobes subequal, apex acute.

Capsules

10–15 mm.

8–15(–17) mm.

Anthers

included, glabrous or sparsely hirsutulous.

included, glabrous.

Stigmas

exserted, lobes subequal.

included, lobes unequal, abaxial 2 times longer than adaxial.

2n

= 20.

Diplacus cusickii

Diplacus clevelandii

Phenology Flowering May–Jul. Flowering Apr–Jun(–Jul).
Habitat Slopes, canyons, washes, ditches, sand talus, diatomaceous slopes, basalt outcrops, black volcanic gravel, volcanic ash and sand, sagebrush areas. Dry, rocky openings in chaparral, roadcuts.
Elevation 800–1000 m. (2600–3300 ft.) 900–1500 m. (3000–4900 ft.)
Distribution
from FNA
ID; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Diplacus cusickii is endemic to northern Malheur County, Oregon, and along the Snake River in Ada and Owyhee counties, Idaho. Its narrow geographic range reflects the segregation of the more widely distributed D. cusickioides.

D. M. Thompson (2005) noted that collections in northern Malheur County, Oregon, were intermediate between Mimulus cusickii and M. nanus; the type of M. cusickii is from this area and is among the narrowly endemic, supposedly putative intermediates (G. L. Nesom 2013c). These plants have abruptly and sharply acuminate leaf apices like the more widespread form traditionally identified as Diplacus cusickii; they differ in having glabrous leaf surfaces. Typical D. nanus occurs in close sympatry, without intergradation, with the populations in northern Malheur County. Because of their distinctive morphology and coherent geography, the northern Malheur County plants are reasonably recognized as a distinct species. The more widely distributed form formerly identified as D. cusickii now is identified as D. cusickioides. Populations of D. cusickii in the narrow sense along the Snake River in Ada and Owyhee counties, Idaho, may have dispersed there from the Oregon center. Some plants of D. cusickioides in the Leslie Gulch area of east-central Malheur County have somewhat reduced vestiture, approaching that of D. cusickii.

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

Diplacus clevelandii is restricted to Orange, Riverside, and San Diego counties and in adjacent Mexico.

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

Source FNA vol. 17, p. 439. 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. 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
D. angustatus, D. aridus, D. aurantiacus, D. bicolor, D. bigelovii, D. bolanderi, D. brandegeei, D. brevipes, D. calycinus, D. cascadensis, 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 Eunanus cusickii, Mimulus cusickii Mimulus clevelandii
Name authority (Greene) G. L. Nesom: Phytoneuron 2012-39: 28. (2012) (Brandegee) Greene: Erythea 4: 22. (1896) — (as clevelandi)
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