Flora of North America species comparison

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Diplacus tricolor

Diplacus cascadensis

tricolor monkeyflower

Cascade monkeyflower, Cascades monkeyflower
Habit Herbs, annual, acaulescent or caulescent. Herbs, annual.
Stems

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

erect to ascending-erect, 20–100 mm, distal internodes 1–4 mm, short glandular-villous to glandular-puberulent.
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.

usually cauline, relatively even-sized;

petiole present proximally, absent distally;

blade elliptic-spatulate to obovate or broadly oblanceolate, 10–22 × 2–10 mm, margins entire, plane, apex obtuse to rounded-acute, surfaces minutely glandular-puberulent.
Pedicels

1–3(–5) mm in fruit.

1–3 mm in fruit.
Flowers

1 per node, chasmogamous.

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

usually glandular-puberulent.

apparently glabrous.
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.

magenta to purplish, usually with a darker narrow line extending from throat onto each lobe midvein, palate ridges yellow with red spots, throat floor glabrous, tube 1.1–1.9 mm diam. at filament insertion, tube-throat 8–10 mm, limb 7–11 mm diam., bilabiate.
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.

symmetrically attached to pedicels, not inflated in fruit, (4–)5–7 mm, minutely glandular-puberulent, lobes subequal, apex acute to acuminate, ribs dark green or reddish, intercostal areas whitish.
Capsules

(2–)3–8(–10) mm, indehiscent.

5–8(–9) mm.
Anthers

included, with apical tufts of short, eglandular hairs.

(distal pair) exserted, minutely viscid-villosulous.
Stigmas

nearly exserted, lobes subequal.

exserted, lobes usually subequal.
2n

= 18.

= 16.

Diplacus tricolor

Diplacus cascadensis
Phenology Flowering Mar–Jul(–Aug). Flowering Jun–Aug.
Habitat Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. Open pumice flats, scree slopes, sandy soils, juniper-sagebrush, juniper, pine-juniper, yellow pine, lodgepole pine forests.
Elevation 50–1500 m. (200–4900 ft.) 1400–2400(–2600) m. (4600–7900(–8500) ft.)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
from FNA
OR
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 cascadensis is known from Deschutes, Klamath, and Lake counties. Plants of this species have been identified as D. nanus (similar in its purplish leaves congested on crowded distal nodes, minutely glandular-puberulent vestiture, and purplish and strongly bilabiate corollas), but they differ from D. nanus in their broader distal leaves, shorter calyces, shorter corollas with glabrous throats and magenta tubes, and shorter capsules.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 447. FNA vol. 17, p. 441.
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. 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 tricolor
Name authority (Hartweg ex Lindley) G. L. Nesom: Phytoneuron 2012-39: 30. (2012) G. L. Nesom: Phytoneuron 2013-65: 13, figs. 8, 9. (2013)
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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