Diplacus aurantiacus

(Curtis) Jepson

Man. Fl. Pl. Calif., 919. 1925.

Common names: Orange-bush monkeyflower
Endemic
Basionym: Mimulus aurantiacus Curtis Bot. Mag. 10: plate 354. 1796
Synonyms: Diplacus glutinosus (J. C. Wendland) Nuttall D. glutinosus var. aurantiacus (Curtis) Lindley M. glutinosus J. C. Wendland
Treatment appears in FNA Volume 17. Treatment on page 449. Mentioned on page 427, 428, 450, 451.

Subshrubs or shrubs. Stems erect to ascending, 500–1200 (–1500) mm, minutely hirtellous-hirsutulous and minutely stipitate-glandular. Leaves usually cauline, relatively even-sized; petiole absent or indistinct; blade narrowly oblong to narrowly elliptic-lanceolate proximally to lanceolate to elliptic-lanceolate or elliptic distally, 15–60 (–75) × 2–20 mm, margins entire or shallowly serrate, plane or revolute, apex obtuse to rounded, surfaces glabrous or abaxial sparsely to densely hairy, hairs branched, adaxial usually without unbranched hairs. Pedicels 4–13 mm in fruit. Flowers 2 (–4) per node, chasmogamous. Calyces not inflated in fruit, 18–30 mm, glabrous or minutely hirtellous and/or minutely stipitate-glandular, tube slightly dilated distally, lobes subequal to unequal, apex acute, ribs green, intercostal areas light green. Corollas yellow-orange to orange, not spotted or striped, palate ridges yellow to golden yellow or orange, tube-throat 25–30 mm, limb 20–30 mm diam., bilabiate to nearly rotate, lobes oblong, apex of adaxial 2 each shallowly, asymmetrically incised. Anthers exserted (at throat), glabrous. Styles sparsely glandular. Stigmas exserted, lobes equal. Capsules 18–31 mm. 2n = 20.


Phenology: Flowering Apr–Aug.
Habitat: Sand dunes and bluffs, dry hillsides, grassy slopes, road banks, stream banks, basaltic knolls, rocky slopes and outcrops, open pine forests, coastal scrub.
Elevation: 0–700(–1000) m.

Discussion

Diplacus aurantiacus occurs from southwestern Oregon (Curry County) southward to Santa Barbara County, California.

Selected References

None.

Lower Taxa

None.
... more about "Diplacus aurantiacus"
Incised (?) +, Acute (?) +, Obtuse (?) +  and Rounded (?) +
Guy L. Nesom +  and Melissa C. Tulig +
(Curtis) Jepson +
Mimulus aurantiacus +
6 cm60 mm <br />0.06 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
narrowly oblong;narrowly elliptic-lanceolate +
? (?) +, ? (?) +  and ? (?) +
2mm;20mm +
stipitate-glandular +, hirtellous +  and glabrous +
not inflated +
1.8 cm18 mm <br />0.018 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (3.1 cm31 mm <br />0.031 m <br />) +
Orange-bush monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
yellow-orange;orange not spotted or striped +
Calif. +  and Oreg. +
0–700(–1000) m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Sand dunes and bluffs, dry hillsides, grassy slopes, road banks, stream banks, basaltic knolls, rocky slopes and outcrops, open pine forests, coastal scrub. +
unbranched +  and branched +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
equal-sized +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
subequal +  and unequal +
palmate +  and subpinnate +
revolute +, plane +  and serrate +
wing-angled +  and angled +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
yellow +  and golden yellow or orange +
rarely more or less equal to or slightly longer +
0.4 cm4 mm <br />0.004 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering Apr–Aug. +
Man. Fl. Pl. Calif., +
flattened +, ovoid +  and oblong +
deciduous +
erect;ascending +
50 cm500 mm <br />0.5 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
Diplacus glutinosus +, D. glutinosus var. aurantiacus +  and M. glutinosus +
Diplacus aurantiacus +
Diplacus +
species +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
dilated +
perennial +  and annual +
shrub +  and subshrub +
10 +, 9 +  and 8 +