Diplacus tricolor

(Hartweg ex Lindley) G. L. Nesom

Phytoneuron 2012-39: 30. 2012.

Common names: Tricolor monkeyflower
Endemic
Basionym: Mimulus tricolor Hartweg ex Lindley J. Hort. Soc. London 4: 222. 1849
Treatment appears in FNA Volume 17. Treatment on page 447. Mentioned on page 427, 428, 429, 430, 448.

Herbs, annual, acaulescent or caulescent. Stems erect or ascending, 10–140 (–170) mm, densely 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. Pedicels 1–3 (–5) mm in fruit. Flowers 1 per node, chasmogamous. 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. 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. Anthers included, with apical tufts of short, eglandular hairs. Styles usually glandular-puberulent. Stigmas nearly exserted, lobes subequal. Capsules (2–) 3–8 (–10) mm, indehiscent. 2n = 18.


Phenology: Flowering Mar–Jul(–Aug).
Habitat: Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields.
Elevation: 50–1500 m.

Discussion

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

Selected References

None.

Lower Taxa

None.
... more about "Diplacus tricolor"
Guy L. Nesom +  and Melissa C. Tulig +
(Hartweg ex Lindley) G. L. Nesom +
Mimulus tricolor +
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
narrowly elliptic;oblanceolate +
? (?) +, ? (?) +  and ? (?) +
3mm;12mm +
dark maroon-purple +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
glandular-puberulent +
not inflated +
1.1 cm11 mm <br />0.011 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Tricolor monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
white;yellow;orange;yellow;orange;purplish brown;purple;lavender;magenta;red;pink;blue +
Calif. +  and Oreg. +
50–1500 m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Vernally flooded depressions in grasslands, low spots and ditches in and around agricultural fields. +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
magenta +  and purple +
0.7 cm7 mm <br />0.007 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
triangular;deltate +
subequal +
palmate +  and subpinnate +
plane +  and toothed +
wing-angled +  and angled +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
purple-spotted +  and yellow +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
rarely more or less equal to or slightly longer +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering Mar–Jul(–Aug). +
Phytoneuron +
flattened +, ovoid +  and oblong +
deciduous +
ascending;erect +
1 cm10 mm <br />0.01 m <br /> (14 cm140 mm <br />0.14 m <br />) +
glandular-puberulent +
glandular-puberulent +
Eunanus +  and Mimulus sect. Diplacus +
Diplacus tricolor +
Diplacus +
species +
1.3 cm13 mm <br />0.013 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
magenta +  and purple +
caulescent +  and acaulescent +
10 +, 9 +  and 8 +