Flora of North America species comparison

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Diplacus rattanii

Diplacus cusickioides

Rattan's monkeyflower

Cusick's monkeyflower, Nesom's monkey-flower
Habit Herbs, annual. Herbs, annual.
Stems

erect, 10–180(–230) mm, densely glandular-pubescent and viscid.

erect to erect-ascending, (10–)30–240(–350) mm, distal internodes 1–5 mm, densely glandular-villous.
Leaves

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

petiole absent;

blade obovate to narrowly elliptic, 3–46(–70) × 1–20(–25) mm, margins entire or crenate, plane, apex rounded or obtuse, surfaces: proximals glabrate, distals glandular-pubescent and viscid.

basal and cauline or usually cauline, relatively even-sized or gradually larger distally;

petiole absent, proximal base short petiole-like, 1–5 mm;

blade ovate to broadly elliptic-ovate, (10–)15–25(–35) × 4–16 mm, margins entire, plane, apex abruptly acuminate, surfaces densely glandular-villous.
Pedicels

1–3(–6) mm in fruit.

1–1.5 mm in fruit.
Flowers

1 per node, chasmogamous.

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

eglandular-puberulent.

puberulent, at least on distal 1/2.
Corollas

pink to magenta, throat floor with 3 dark purple lines meeting abaxial lip lobes, palate ridges yellow, tube-throat 7–10 mm, limb 4–7 mm diam., not bilabiate.

magenta or rose purple, tube yellow, throat usually yellow, throat and distal tube red-spotted on floor, palate ridges yellow, tube-throat 13–16(–19) mm, limb 14–26 mm diam., bilabiate.
Calyces

symmetrically attached to pedicels, inflated in fruit, 5–10 mm, glandular-pubescent and viscid, lobes subequal, apex obtuse, often apiculate, ribs dark green to purplish, intercostal areas whitish.

symmetrically attached to pedicels, not inflated in fruit, 7–12 mm, glabrous or minutely stipitate-glandular, lobes unequal, apex linear-acuminate, sharp-pointed, ribs green distally, intercostal areas whitish.
Capsules

7–11(–12) mm.

10–17 mm.
Anthers

nearly exserted, glabrous.

included, glabrous or sparsely hirsutulous.
Stigmas

nearly exserted, lobes unequal, abaxial 5–7 times adaxial.

exserted, lobes subequal (herkogamous).
2n

= 16.

Diplacus rattanii

Diplacus cusickioides
Phenology Flowering Apr–Jul. Flowering May–Aug.
Habitat Recently burned or cleared areas, sandhills, sandstone outcrops, sandy gravel and loam, decomposed granite, serpentine-derived soils, open chaparral, chaparral margins, open yellow pine-manzanita woodlands. Lava formations, steep slopes, roadsides, volcanic gravels, scree, ash.
Elevation 300–1300 m. (1000–4300 ft.) (400–)600–1500(–2000) m. ((1300–)2000–4900(–6600) ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
CA; ID; OR; WA
[WildflowerSearch map]
Discussion

Diplacus rattanii occurs mostly in near-coastal localities from Glenn and Lake counties south to Ventura County.

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

Diplacus cusickioides occurs in western Idaho, eastern Oregon, Klickitat County, Washington, and apparently in a disjunct population system in Modoc County, California, on the east side of the Warner Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 432. FNA vol. 17, p. 439.
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. 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. 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. 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
Synonyms Mimulus rattanii, M. rattanii subsp. decurtatus
Name authority (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 29. (2012) G. L. Nesom: Phytoneuron 2013-65: 6, figs. 3, 4. (2013)
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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