Flora of North America species comparison

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Diplacus johnstonii

Diplacus rupicola

Johnston's monkeyflower

Death Valley monkeyflower, rock midget
Habit Herbs, annual. Herbs, perennial, with woody caudex.
Stems

erect, (10–)30–200(–300) mm, densely glandular-puberulent.

erect to ascending, sometimes pendent, 10–170 mm, densely and finely glandular-puberulent.
Leaves

basal and cauline, gradually reduced distally;

petiole absent, bases of larger leaves often with petiole-like extensions;

blade obovate or oblanceolate, sometimes elliptic, (4.5–)7–25(–32) × 2–12(–15) mm, margins entire, plane, apex rounded to acute, surfaces densely glandular-puberulent.

usually basal rosettes and proximal cauline, relatively even-sized;

petiole absent, base gradually narrowed to broad, petiole-like extension;

blade oblanceolate, (10–)18–60(–80) × (1.5–)3–15(–26) mm, margins entire, plane, not ciliate, apex acute, surfaces glandular-puberulent.
Pedicels

1–4(–5) mm in fruit.

1–3 mm in fruit.
Flowers

2 per node, or 1 or 2 per node on 1 plant, chasmogamous.

1 or 2 per node, chasmogamous.
Styles

densely glandular-puberulent distally.

glandular-puberulent.
Corollas

magenta, darker and more reddish in throat and, often, along narrow radiating lines extending from throat onto midveins of lobes, throat usually with a large dark spot on each side of mouth on lateral walls, palate ridges and throat floor yellow with reddish spots, tube-throat 9–15 mm, limb 10–15 mm diam., not bilabiate.

limb pinkish white to nearly white with a large magenta-purple round or 2-lobed blotch at base of each lobe, throat and palate ridges golden yellow with magenta speckling, palate ridges short-pilose, throat glabrous, tube-throat 17–35 mm, limb 8–21 mm diam., not bilabiate.
Calyces

symmetrically attached to pedicels, not inflated in fruit, (6–)7–11 mm, glandular-puberulent, lobes unequal, apex acute to acuminate, ribs inconspicuous, intercostal areas reddish.

asymmetrically attached to pedicel, not inflated in fruit, 8–18 mm, densely glandular-puberulent, lobes unequal, apex acuminate, ribs green, intercostal areas pale green.
Capsules

7–12 mm.

3–8 mm, indehiscent until senescence of pedicel, then opening along both sutures only after wetting.
Anthers

included, glabrous.

included, glabrous or slightly puberulent at base.
Stigmas

exserted or at opening of corolla tube-throat, lobes equal.

included, lobes equal.
2n

= 16.

= 16.

Diplacus johnstonii

Diplacus rupicola
Phenology Flowering May–Aug. Flowering Feb–Jun.
Habitat Steep, unstable scree slides, talus slopes, gravel slides, cracks in granite cliffs, ridges, washes, steep sand and gravel slopes, canyon bottoms, gravelly road banks, recent burns, desert scrub, chaparral, juniper, pinyon-juniper, lodgepole pine, yellow pine, Jeffrey pine, and Jeffrey pine-western white pine-fir woodlands. Crevices in limestone cliffs and walls, limestone ridge tops and slopes, wash edges, gravelly slopes, canyon sides.
Elevation (1000–)1300–2900 m. ((3300–)4300–9500 ft.) 300–1800 m. (1000–5900 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
CA
[WildflowerSearch map]
Discussion

Populations of Diplacus johnstonii occur in Los Angeles, Riverside, San Bernardino, Santa Barbara, and Ventura counties. The populations in northwestern Los Angeles, Santa Barbara, and Ventura counties were noted by D. M. Thompson (2005) to be intermediate between D. constrictus and D. johnstonii.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Diplacus rupicola is known from Inyo County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 433. FNA vol. 17, p. 448.
Parent taxa Phrymaceae > Diplacus Phrymaceae > Diplacus
Sibling taxa
D. angustatus, D. aridus, D. aurantiacus, D. bicolor, D. bigelovii, D. bolanderi, D. brandegeei, D. brevipes, D. calycinus, D. cascadensis, D. clevelandii, D. clivicola, D. compactus, D. congdonii, D. constrictus, D. cusickii, D. cusickioides, D. deschutesensis, D. douglasii, D. fremontii, D. grandiflorus, D. graniticola, D. jepsonii, D. kelloggii, D. layneae, D. leptaleus, D. linearis, D. longiflorus, D. mephiticus, D. mohavensis, D. nanus, D. ovatus, D. parryi, D. parviflorus, D. pictus, D. pulchellus, D. puniceus, D. pygmaeus, D. rattanii, D. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
D. angustatus, D. aridus, D. aurantiacus, D. bicolor, D. bigelovii, D. bolanderi, D. brandegeei, D. brevipes, D. calycinus, D. cascadensis, D. clevelandii, D. clivicola, D. compactus, D. congdonii, D. constrictus, D. cusickii, D. cusickioides, D. deschutesensis, D. douglasii, D. fremontii, D. grandiflorus, D. graniticola, D. jepsonii, D. johnstonii, D. kelloggii, D. layneae, D. leptaleus, D. linearis, D. longiflorus, D. mephiticus, D. mohavensis, D. nanus, D. ovatus, D. parryi, D. parviflorus, D. pictus, D. pulchellus, D. puniceus, D. pygmaeus, D. rattanii, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
Synonyms Mimulus johnstonii Mimulus rupicola
Name authority (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) (Coville & A. L. Grant) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 27. (2012)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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