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tricolor monkeyflower

bush monkeyflower, notch-petaledbush monkey flower, Sierra bush monkeyflower, sticky monkeyflower

Habit Herbs, annual, acaulescent or caulescent. Subshrubs.
Stems

erect or ascending, 10–140(–170) mm, densely glandular-puberulent.

erect, 400–700 mm, minutely hirtellous to hirsutulous with slightly deflexed, eglandular hairs.

Leaves

basal densely clustered;

petiole absent;

blade narrowly elliptic to oblanceolate, (5–)8–45(–60) × (1–)3–12(–20) mm, margins entire, sometimes toothed, plane, not ciliate, apex obtuse, surfaces glandular-puberulent.

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

1–3(–5) mm in fruit.

5–12 mm in fruit.

Flowers

1 per node, chasmogamous.

2 per node, chasmogamous.

Styles

usually glandular-puberulent.

sparsely minutely glandular.

Corollas

tricolored, limb and throat magenta to purple, each lobe with a discrete, dark maroon-purple blotch at base, all 3 blotches of abaxial lip round and not usually extending into throat, palate ridges yellow, flanked with white, sometimes purple-spotted, tube-throat (13–)15–50 mm, limb 7–21 mm diam., bilabiate, lobes equal.

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

slightly asymmetrically attached to pedicel, not inflated in fruit, (6–)11–23 mm, densely glandular-puberulent, lobes subequal, apex obtuse, ribs often purplish proximally, intercostal areas whitish.

not inflated in fruit, 20–30 mm, glabrous except for lobe apices, tube slightly dilated distally, lobes subequal, apex acute.

Capsules

(2–)3–8(–10) mm, indehiscent.

15–25 mm.

Anthers

included, with apical tufts of short, eglandular hairs.

included, glabrous.

Stigmas

nearly exserted, lobes subequal.

included, lobes equal.

2n

= 18.

= 20.

Diplacus tricolor

Diplacus grandiflorus

Phenology Flowering Mar–Jul(–Aug). Flowering Apr–Jun.
Habitat Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. Rock walls, dry rocky soils.
Elevation 50–1500 m. (200–4900 ft.) 100–1600 m. (300–5200 ft.)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Diplacus tricolor occurs in northwestern and south-central Oregon and from there across a disjunction to central California as far as Kern County.

(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. 447. 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. 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. 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 Mimulus tricolor D. glutinosus var. grandiflorus, D. longiflorus var. grandiflorus, Mimulus aurantiacus var. grandiflorus, M. bifidus
Name authority (Hartweg ex Lindley) G. L. Nesom: Phytoneuron 2012-39: 30. (2012) Groenland: Rev. Hort. 6: 402, fig. 136. (1857)
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