Diplacus viscidus

(Congdon) G. L. Nesom

Phytoneuron 2012-39: 29. 2012.

Common names: Sticky monkeyflower
Endemic
Basionyms: Mimulus viscidus Congdon Erythea 7: 187. 1900
Synonyms: M. fremontii var. viscidus (Congdon) Jepson M. subsecundus var. viscidus (Congdon) A. L. Grant
Treatment appears in FNA Volume 17. Treatment on page 432. Mentioned on page 430, 433.

Herbs, annual. Stems erect, (30–) 60–370 mm, densely glandular-pubescent with viscid hairs. 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. Pedicels 1–4 (–5) mm in fruit. Flowers 1 per node, chasmogamous. 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. 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. Anthers included, ciliate. Styles glandular-puberulent. Stigmas included, lobes unequal, abaxial 1.5 times adaxial. Capsules 7–11 mm. 2n = 16.


Phenology: Flowering Apr–Jul.
Habitat: Chaparral clearings and openings.
Elevation: 90–1300 m.

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.

Selected References

None.

Lower Taxa

None.

... more about "Diplacus viscidus"
1.5 times adaxial lobes +
Acute (?) +  and Attenuate (?) +
Guy L. Nesom +  and Melissa C. Tulig +
(Congdon) G. L. Nesom +
Mimulus viscidus +
5.4 cm54 mm <br />0.054 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (5.4 cm54 mm <br />0.054 m <br />) +
obovate;narrowly elliptic +
not +, leathery +  and not fleshy +
3mm;23mm +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
inflated +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Sticky monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
lavender;magenta +
glandular-pubescent +
90–1300 m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Chaparral clearings and openings. +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
reduced +, largest +  and equal-sized +
not bilabiate +
yellow fading +  and white +
not bilabiate +
yellow fading +  and white +
triangular;deltate +
unequal +  and subequal +
palmate +  and subpinnate +
serrate +  and entire +
not bilabiate +
yellow fading +  and white +
wing-angled +  and angled +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
0.4 cm4 mm <br />0.004 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 /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Apr–Jul. +
Phytoneuron +
not bilabiate +
yellow fading +  and white +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
flattened +, ovoid +  and oblong +
deciduous +
6 cm60 mm <br />0.06 m <br /> (37 cm370 mm <br />0.37 m <br />) +
glandular-puberulent +
M. fremontii var. viscidus +  and M. subsecundus var. viscidus +
Diplacus viscidus +
Diplacus +
species +
not bilabiate +
yellow fading +  and white +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
10 +, 9 +  and 8 +