Diplacus torreyi

(A. Gray) G. L. Nesom

Phytoneuron 2012-39: 32. 2012.

Common names: Torrey’s monkeyflower
IllustratedEndemic
Basionyms: Mimulus torreyi A. Gray Proc. Amer. Acad. Arts 11: 97. 1876
Treatment appears in FNA Volume 17. Treatment on page 443. Mentioned on page 431, 444.

Herbs, annual, herbage not drying dark. Stems erect, (20–) 40–380 (–530) mm, glandular-puberulent to glandular-pubescent. Leaves usually cauline, gradually reduced distally; petiole poorly delimited; blade elliptic or oblanceolate, (3–) 6–40 (–48) × (0.5–) 1–14 (–19) mm, margins entire, plane, apex rounded, surfaces: proximals glabrate, distals glandular-puberulent or glandular-pubescent. Pedicels 1–3 (–6) 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, (2–) 5–10 (–12) mm, glandular-puberulent to glandular-pubescent, lobes shallowly triangular to broadly ovate, subequal, apex obtuse, rarely apiculate, ribs purplish. Corollas: tube magenta, limb magenta to pale rose, rarely nearly white, abaxial lip usually paler, palate ridges yellow, tube-throat (8–) 9–18 (–20) mm, limb 8–20 mm diam., weakly bilabiate. Anthers included, sometimes slightly ciliate. Styles glandular-puberulent. Stigmas included, lobes unequal, abaxial 2 times adaxial. Capsules (5–) 6–11 (–13) mm. 2n = 20.


Phenology: Flowering May–Aug.
Habitat: Moist sand in channel beds and flood plains, exposed slopes along streams, roadside ditches, serpentine slopes, volcanic outcrop margins, gravelly openings, rocky serpentine soils, ridges in yellow pine and Jeffrey pine forests, openings in yellow pine, lodgepole pine, red fir, and mixed conifer woodlands, chaparral edges, meadows, recent burns, roadsides, road banks.
Elevation: (100–)700–2000(–2400) m.

Discussion

Diplacus torreyi occurs from Lassen and Shasta counties to Fresno County in the Sierra Nevada and Cascade Range.

Diplacus torreyi is recognized by its erect, usually single-stemmed habit (usually with the proximal one or two internodes elongate), obovate to oblanceolate leaf blades, calyces with membranous walls, thin ribs, and shallowly triangular to broadly ovate lobes, and weakly bilabiate corollas with relatively narrower limbs, usually drying a light color with yellow palate ridges.

Selected References

None.

Lower Taxa

None.

... more about "Diplacus torreyi"
2 times adaxial lobes +
Obtuse (?) +  and Rounded (?) +
Guy L. Nesom +  and Melissa C. Tulig +
(A. Gray) G. L. Nesom +
Mimulus torreyi +
4 cm40 mm <br />0.04 m <br /> (4.8 cm48 mm <br />0.048 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (4 cm40 mm <br />0.04 m <br />) +
oblanceolate;elliptic +
not +, leathery +  and not fleshy +
1mm;14mm +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glandular-puberulent +  and glandular-pubescent +
not inflated +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Torrey’s monkeyflower +
not +, rarely radially symmetric +  and weakly strongly bilabiate +
white;yellow;orange;yellow;orange;purplish brown;purple;lavender;magenta;red;pink;blue +
glandular-pubescent +  and glandular-puberulent +
(100–)700–2000(–2400) m. +
hairy +  and glabrous +
reflexed;nodding;erect +
reduced +
compressed;asymmetrically ovoid;lanceoloid or nearly cylindric +
Moist sand in channel beds and flood plainMoist sand in channel beds and flood plains, exposed slopes along streams, roadside ditches, serpentine slopes, volcanic outcrop margins, gravelly openings, rocky serpentine soils, ridges in yellow pine and Jeffrey pine forests, openings in yellow pine, lodgepole pine, red fir, and mixed conifer woodlands, chaparral edges, meadows, recent burns, roadsides, road banks.dows, recent burns, roadsides, road banks. +
gland-tipped +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
reduced +
white +, magenta +  and pale rose +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
shallowly triangular;broadly ovate +
unequal +  and subequal +
palmate +  and subpinnate +
wing-angled +  and angled +
2 +  and 1 +
chasmogamous +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 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 May–Aug. +
Phytoneuron +
flattened +, ovoid +  and oblong +
Illustrated +  and Endemic +
deciduous +
4 cm40 mm <br />0.04 m <br /> (38 cm380 mm <br />0.38 m <br />) +
glandular-puberulent +
Eunanus +  and Mimulus sect. Diplacus +
Diplacus torreyi +
Diplacus +
species +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
10 +, 9 +  and 8 +