Diplacus aridus

Abrams

Bull. Torrey Bot. Club 32: 540. 1905.

Common names: Low bush monkeyflower
Endemic
Synonyms: Mimulus aridus (Abrams) A. L. Grant M. aurantiacus var. aridus (Abrams) D. M. Thompson
Treatment appears in FNA Volume 17. Treatment on page 452. Mentioned on page 427, 428.

Subshrubs. Stems erect, 80–330 mm, glabrous. Leaves cauline, relatively even-sized; petiole absent or short; blade narrowly ovate to elliptic-lanceolate, elliptic, or oblanceolate, 20–50 × 3–15 mm, margins dentate to serrate, plane or revolute, apex obtuse to acute, surfaces glabrous. Pedicels 3–10 mm in fruit. Flowers 2 per node, chasmogamous. Calyces inflated in fruit, 35–40 mm, glabrous, tube distinctly dilated distally, lobes subequal, apex acute, ribs green, intercostal areas light green. Corollas pale-yellow to cream or nearly white, pale orange, golden yellow, or orange-yellow, not spotted or striped, palate ridges golden yellow, throat internally glabrous, tube-throat 37–52 mm, limb 15–22 mm diam., not bilabiate, lobes entire. Anthers exserted (at throat), glabrous. Styles minutely glandular. Stigmas exserted, lobes equal. Capsules 20–36 mm. 2n = 20.


Phenology: Flowering Apr–Jun.
Habitat: Rock walls, dry rocky soils.
Elevation: 200–1500 m.

Discussion

Diplacus aridus is known from Imperial and San Diego counties.

Selected References

None.

Lower Taxa

None.
... more about "Diplacus aridus"
Acute (?) +  and Obtuse (?) +
Guy L. Nesom +  and Melissa C. Tulig +
Abrams +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
narrowly ovate;elliptic-lanceolate elliptic or oblanceolate +
? (?) +, ? (?) +  and ? (?) +
3mm;15mm +
inflated +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
Low bush monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
pale-yellow;cream or nearly white pale orange golden yellow or orange-yellow not spotted or striped +
200–1500 m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Rock walls, dry rocky soils. +
gland-tipped +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
equal-sized +
not bilabiate +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
triangular;deltate +
subequal +
palmate +  and subpinnate +
revolute +, plane +  and dentate to serrate +
wing-angled +  and angled +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
rarely more or less equal to or slightly longer +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Apr–Jun. +
Bull. Torrey Bot. Club +
flattened +, ovoid +  and oblong +
deciduous +
8 cm80 mm <br />0.08 m <br /> (33 cm330 mm <br />0.33 m <br />) +
Mimulus aridus +  and M. aurantiacus var. aridus +
Diplacus aridus +
Diplacus +
species +
3.7 cm37 mm <br />0.037 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
dilated +
perennial +  and annual +
10 +, 9 +  and 8 +