Flora of North America species comparison

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Diplacus leptaleus

Diplacus fremontii

least flower monkey flower, least monkeyflower, slender monkeyflower

Fremont's monkeyflower, Frémont's monkeyflower
Habit Herbs, annual. Herbs, annual.
Stems

erect to ascending, 10–140 mm, glandular-puberulent to short glandular-villous.

erect, 10–200(–240) mm, glandular-puberulent or glandular-pubescent.
Leaves

usually cauline, relatively even-sized;

petiole absent;

blade oblanceolate to linear, (5–)6–24(–34) × (0.5–)1–4(–7.5) mm, margins entire, plane, apex rounded to acute, surfaces glandular-puberulent.

basal and cauline, basal in rosette, cauline reduced distally;

petiole absent;

blade narrowly elliptic, sometimes obovate to oblanceolate, 2–30(–55) × 1–10(–16) mm, margins entire, sometimes crenate to serrate, plane, apex rounded to acute, surfaces: proximals glabrous, distals glandular-puberulent or glandular-pubescent.
Pedicels

1(–3) mm in fruit.

1–4(–7 on proximal) mm in fruit.
Flowers

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

1 per node, chasmogamous.
Styles

sparsely glandular-puberulent.

minutely puberulent.
Corollas

magenta, sometimes white, throat whitish, often speckled with dark spots, palate ridges weak, whitish to pinkish, tube-throat 6–8 mm, limb 3–5 mm diam., not bilabiate.

magenta to dark reddish purple, throat often darker near mouth, palate ridges yellow at mouth, throat floor glabrous or minutely puberulent, tube-throat 9–23 mm, limb 8–26 mm diam., not bilabiate.
Calyces

symmetrically attached to pedicels, not inflated in fruit, (2.5–)3–5.5(–6.5) mm, glandular-puberulent, lobes subequal, apex acute, ribs darkened, blackish, intercostal areas purplish.

symmetrically attached to pedicels, inflated in fruit, 5–14 mm, glandular-puberulent to glandular-pubescent or ribs almost tomentose and viscid, lobes subequal, apex rounded and apiculate or acute, intercostal areas white.
Capsules

(3–)4–6(–6.5) mm.

6.5–13(–14) mm.
Anthers

included, glabrous.

included, glabrous, rarely minutely puberulent.
Stigmas

included, lobes unequal, abaxial nearly 2 times adaxial.

included, lobes subequal.
2n

= 16.

= 16.

Diplacus leptaleus

Diplacus fremontii
Phenology Flowering Jun–Aug. Flowering Mar–Jun.
Habitat Developing granitic soils, boulders of granite outcrops, disturbed areas, water runoff areas. Soft, sandy soils along washes, flood plains, areas of water runoff, sandy hilltops and flats.
Elevation (1800–)2100–3400 m. ((5900–)6900–11200 ft.) 100–2100 m. (300–6900 ft.)
Distribution
from FNA
CA; NV
[WildflowerSearch map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Diplacus leptaleus occurs in the Sierra Nevada from Nevada County south to Tulare County, California, and in southern Washoe County, Nevada. Diplacus leptaleus is the only species of Diplacus that commonly produces white flowers. Populations rarely are fixed for white corollas; they are commonly fixed for magenta corollas, especially at higher elevations (D. M. Thompson 2005).

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

Diplacus fremontii occurs from Monterey and San Benito counties south to San Diego County, east to Kern County and adjacent Inyo County, and in Baja California.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 438. FNA vol. 17, p. 431.
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. johnstonii, D. kelloggii, D. layneae, 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. 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. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. vandenbergensis, D. viscidus
Synonyms Mimulus leptaleus Eunanus fremontii, Mimulus fremontii, M. subsecundus
Name authority (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) (Bentham) G. L. Nesom: Phytoneuron 2012-39: 28. (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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