Diplacus cascadensis

G. L. Nesom

Phytoneuron 2013-65: 13, figs. 8, 9. 2013.

Common names: Cascades monkeyflower
Endemic
Treatment appears in FNA Volume 17. Treatment on page 441. Mentioned on page 430.

Herbs, annual. Stems erect to ascending-erect, 20–100 mm, distal internodes 1–4 mm, short glandular-villous to glandular-puberulent. Leaves 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 mm in fruit. Flowers 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. Calyces 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. Corollas 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. Anthers (distal pair) exserted, minutely viscid-villosulous. Styles apparently glabrous. Stigmas exserted, lobes usually subequal. Capsules 5–8 (–9) mm. 2n = 16.


Phenology: Flowering Jun–Aug.
Habitat: Open pumice flats, scree slopes, sandy soils, juniper-sagebrush, juniper, pine-juniper, yellow pine, lodgepole pine forests.
Elevation: 1400–2400(–2600) m.

Discussion

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.

Selected References

None.

Lower Taxa

None.
... more about "Diplacus cascadensis"
viscid-villosulous +
Acute (?) +  and Acuminate (?) +
Guy L. Nesom +  and Melissa C. Tulig +
G. L. Nesom +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
elliptic-spatulate;obovate or broadly oblanceolate +
? (?) +, ? (?) +  and ? (?) +
2mm;10mm +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular-puberulent +
not inflated +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Cascades monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
magenta;purplish +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1400–2400(–2600) m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Open pumice flats, scree slopes, sandy soils, juniper-sagebrush, juniper, pine-juniper, yellow pine, lodgepole pine forests. +
gland-tipped +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
equal-sized +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
triangular;deltate +
subequal +
palmate +  and subpinnate +
wing-angled +  and angled +
2 +  and 1 +
chasmogamous +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
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 Jun–Aug. +
Phytoneuron +
reddish +  and dark green +
flattened +, ovoid +  and oblong +
deciduous +
erect;ascending-erect +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
glandular-puberulent +
Eunanus +  and Mimulus sect. Diplacus +
Diplacus cascadensis +
Diplacus +
species +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.1mm;1.9mm +
10 +, 9 +  and 8 +