Flora of North America species comparison

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Diplacus compactus

Diplacus vandenbergensis

compact monkeyflower, sticky monkeyflower, viscid monkeyflower

Vandenberg monkeyflower
Habit Herbs, annual. Herbs, annual.
Stems

erect, 20–280 mm, densely glandular-pubescent and viscid.

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

usually cauline, gradually reduced distally;

petiole absent;

blade obovate to narrowly elliptic, 4–40 × 0.7–20 mm, margins entire or serrate, plane, apex obtuse to rounded, surfaces: proximals glabrous abaxially, distals glandular-pubescent.

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, not ciliate, apex rounded to acute, surfaces: proximals glabrous, distals glandular-puberulent or glandular-pubescent.
Pedicels

1–4(–5) mm in fruit.

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

1 per node, chasmogamous.

1 per node, chasmogamous.
Styles

glabrous or sparsely eglandular-puberulent.

minutely puberulent.
Corollas

lavender to magenta or red with diffuse dark markings on sides of darker tube-throat, lobes dark at base, without radiating dark lines, floor and palate ridges white or yellow fading distally to white, palate ridges and throat ceiling villous-pilose, tube-throat 10–20 mm, limb 8–20 mm diam., not bilabiate.

yellow with reddish brown spots near mouth, palate ridges yellow, throat floor puberulent, tube-throat (9–)10–23 mm, limb 8–26 mm diam., not bilabiate.
Calyces

symmetrically attached to pedicels, inflated in fruit, 6–10(–12) mm, villous, hairs eglandular, lobes unequal, apex acute to attenuate, ribs and intercostal areas often reddish.

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

6–9 mm.

6.5–13(–14) mm.
Anthers

included, ciliate.

included, glabrous, rarely minutely puberulent.
Stigmas

included, lobes unequal, abaxial 3–4 times adaxial.

included, lobes equal.
2n

= 16.

= 16.

Diplacus compactus

Diplacus vandenbergensis
Phenology Flowering May–Jul. Flowering Apr–Jun.
Habitat Hillsides, washes, recently burned areas, soil and scree banks, granitic sand, chaparral openings, gray pine-blue oak woodlands. Sandy open or disturbed areas, among shrubs.
Elevation 300–1000 m. (1000–3300 ft.) 70–150 m. (200–500 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Diplacus vandenbergensis is endemic to Santa Barbara County, mostly on the north side of the city of Lompoc (La Purisima Mission State Historic Park; also on and near Vandenberg Air Force Base) plus one other locality about 10 kilometers farther west (Santa Ynez Valley, 8 miles west of Buellton). Thompson described Mimulus fremontii var. vandenbergensis as a geographically distinct variant of M. fremontii. The discontinuous morphological difference, allopatric/parapatric geographical distribution, and lack of intergrading populations support recognition of the plants with yellow corollas at specific rank. Plants with yellow corollas are found in D. bicolor, D. mephiticus, and D. parryi, but these morphs are found through most of the geographic ranges of these taxa and sometimes are intermixed in populations.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 433. FNA vol. 17, p. 432.
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. 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. 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. rupicola, D. rutilus, D. thompsonii, D. torreyi, D. traskiae, D. tricolor, D. viscidus
Synonyms Mimulus viscidus var. compactus Mimulus fremontii var. vandenbergensis
Name authority (D. M. Thompson) G. L. Nesom: Phytoneuron 2012-47: 1. (2012) (D. M. Thompson) G. L. Nesom: Phytoneuron 2012-47: 2. (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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