FNA: Diplacus johnstonii vs. Diplacus jepsonii

	Diplacus johnstonii	Diplacus jepsonii
	Johnston's monkeyflower	Jepson's monkeyflower
Habit	Herbs, annual.	Herbs, annual.
Stems	erect, (10–)30–200(–300) mm, densely glandular-puberulent.	erect, 10–150 mm, minutely 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 cauline, relatively even-sized; petiole absent; blade narrowly elliptic-oblanceolate to narrowly oblanceolate, 6–22 × 1–5(–7) mm, margins entire, plane, apex acute to obtuse, surfaces glandular-puberulent to glandular-pubescent.
Pedicels	1–4(–5) mm in fruit.	1 mm in fruit.
Flowers	2 per node, or 1 or 2 per node on 1 plant, chasmogamous.	2 per node, or 1 or 2 per node on 1 plant, chasmogamous.
Styles	densely glandular-puberulent distally.	glandular-puberulent or glandular-pubescent.
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.	lavender-purple to rose purple, throat darker, palate ridges yellow, red-spotted, tube 0.8–1.2 mm diam. at filament insertion, tube-throat 7–10 mm, limb 5–7 mm diam., 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.	symmetrically attached to pedicels, not inflated in fruit, 3–5 mm, minutely puberulent, lobes subequal, apex acute to acuminate, ribs dark green to purplish, intercostal areas whitish.
Capsules	7–12 mm.	4–6 mm.
Anthers	included, glabrous.	exserted, sparsely hispidulous.
Stigmas	exserted or at opening of corolla tube-throat, lobes equal.	exserted, lobes equal.
2n	= 16.	= 16.

	Diplacus johnstonii	Diplacus jepsonii
Phenology	Flowering May–Aug.	Flowering Jun–Aug.
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.	Gentle slopes, sandy and volcanic soils, meadows in spruce-fir forests, openings among pines and in chaparral, shallow drainage areas, disturbed open areas.
Elevation	(1000–)1300–2900 m. ((3300–)4300–9500 ft.)	(900–)1100–2500(–2800) m. ((3000–)3600–8200(–9200) ft.)
Distribution	CA [WildflowerSearch map]	CA; NV; OR [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.)	D. M. Thompson (2005) treated Diplacus jepsonii as conspecific with D. nanus [as W. L. Ezell (1971) had done earlier] because of putative intergrades. In its typical form, D. jepsonii is immediately distinct in its narrower leaves, stems with well-separated proximal nodes, and smaller corollas with nearly filiform tubes. R. J. Meinke (1992), in a field and greenhouse study not cited by Thompson, found that D. jepsonii and D. nanus are distinct in morphology as well as in habitat and that the two do not grow intermixed in nature. Diplacus jepsonii is known only from north-central California, southern Washoe County, Nevada, and southern Oregon. Putative outliers in the central Sierra Nevada are dubiously identified. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 17, p. 433.	FNA vol. 17, p. 442.
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. 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. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
Synonyms	Mimulus johnstonii	Mimulus jepsonii, M. microcarpus, M. nanus var. jepsonii
Name authority	(A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012)	(A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012)
Web links	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Diplacus jepsonii

Johnston's monkeyflower

Jepson's monkeyflower

Habit

Herbs, annual.

Stems

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

erect, 10–150 mm, minutely 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 cauline, relatively even-sized;

petiole absent;

blade narrowly elliptic-oblanceolate to narrowly oblanceolate, 6–22 × 1–5(–7) mm, margins entire, plane, apex acute to obtuse, surfaces glandular-puberulent to glandular-pubescent.

Pedicels

1–4(–5) mm in fruit.

1 mm in fruit.

Flowers

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

Styles

densely glandular-puberulent distally.

glandular-puberulent or glandular-pubescent.

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.

lavender-purple to rose purple, throat darker, palate ridges yellow, red-spotted, tube 0.8–1.2 mm diam. at filament insertion, tube-throat 7–10 mm, limb 5–7 mm diam., 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.

symmetrically attached to pedicels, not inflated in fruit, 3–5 mm, minutely puberulent, lobes subequal, apex acute to acuminate, ribs dark green to purplish, intercostal areas whitish.

Capsules

7–12 mm.

4–6 mm.

Anthers

included, glabrous.

exserted, sparsely hispidulous.

Stigmas

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

exserted, lobes equal.

= 16.

Diplacus johnstonii

Diplacus jepsonii

Phenology

Flowering May–Aug.

Flowering Jun–Aug.

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.

Gentle slopes, sandy and volcanic soils, meadows in spruce-fir forests, openings among pines and in chaparral, shallow drainage areas, disturbed open areas.

Elevation

(1000–)1300–2900 m. ((3300–)4300–9500 ft.)

(900–)1100–2500(–2800) m. ((3000–)3600–8200(–9200) ft.)

Distribution

[WildflowerSearch map]

CA; NV; OR

[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.)

D. M. Thompson (2005) treated Diplacus jepsonii as conspecific with D. nanus [as W. L. Ezell (1971) had done earlier] because of putative intergrades. In its typical form, D. jepsonii is immediately distinct in its narrower leaves, stems with well-separated proximal nodes, and smaller corollas with nearly filiform tubes. R. J. Meinke (1992), in a field and greenhouse study not cited by Thompson, found that D. jepsonii and D. nanus are distinct in morphology as well as in habitat and that the two do not grow intermixed in nature.

Diplacus jepsonii is known only from north-central California, southern Washoe County, Nevada, and southern Oregon. Putative outliers in the central Sierra Nevada are dubiously identified.

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

Source

FNA vol. 17, p. 433.

FNA vol. 17, p. 442.

Parent taxa

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. 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. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus

Synonyms

Mimulus johnstonii

Mimulus jepsonii, M. microcarpus, M. nanus var. jepsonii

Name authority

(A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 29. (2012)

Web links

Local floras: CA, OR
Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria
WildflowerSearch
iNaturalist (observations)
LBJ Wildflower Center
SEINet
Plants of the World Online
Encyclopedia of Life
Wikipedia
Google Image Search

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).

Choose a data source: Flora of North America, OregonFlora

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Flora of North America species comparison

Diplacus johnstonii

Diplacus jepsonii

Diplacus johnstonii

Diplacus jepsonii