Erythranthe primuloides |
Erythranthe diffusa |
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primrose monkey-flower |
Palomar monkeyflower |
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Habit | Perennials, rhizomatous or stoloniferous, mat-forming, rhizomes or stolons flagelliform. | Annuals, taprooted. |
Stems | erect to ascending, usually simple, 2–10(–20) cm, villous, internodes shortened. |
erect, simple or branched from basal nodes, 4–20 cm, minutely puberulent. |
Leaves | all basal or near basal, often rosulate; petiole 0 mm; blade palmately 3-veined, oblanceolate to elliptic-obovate, 7–40 × 4–12 mm, base cuneate to attenuate, margins entire, distally denticulate to dentate, or sharply serrate-dentate, apex acute to obtuse, abaxial surface glabrous, adaxial glabrous or glabrate to sparsely to densely long-villous, eglandular. |
cauline, basal not persistent; petiole 0 mm; blade 1-veined or palmately 3-veined (in broader ones), lanceolate to ovate, 3–20 × 1–6 mm, base attenuate, margins entire, sometimes toothed, apex acute, surfaces minutely puberulent. |
Flowers | herkogamous, 1. |
herkogamous, 1–36, from distal or medial to distal nodes. |
Styles | glabrous. |
distally pubescent. |
Corollas | yellow to orange-yellow, usually brown-spotted abaxially, base of each abaxial lobe usually with a larger reddish brown spot, bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular, densely hirsute on abaxial side of opening; tube-throat narrowly campanulate, 15–20 mm, exserted beyond calyx margin; lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open, palate densely villous, abaxial ridges prominent. |
pink to purple, abaxial limb with 2 yellow palate ridges, bilaterally symmetric, weakly bilabiate; tube-throat funnelform, (3–)6–10 mm, exserted beyond calyx margin; limb expanded 3–14 mm, lobes notched, adaxial limb glabrous, sometimes sparsely bearded. |
Fruiting pedicels | 30–110(–130) mm, glabrous or sparsely stipitate-glandular near base. |
ascending to spreading horizontally, (2–)12–60(–68) mm. |
Fruiting calyces | tubular-campanulate, weakly or not inflated, 6–8 mm, glabrous. |
sometimes red-dotted, campanulate, 3–6 mm, margins distinctly toothed or lobed, minutely puberulent, ribs weak, lobes pronounced, erect, margins glabrous. |
Capsules | included, 6–7 mm. |
included, 5–8 mm. |
Anthers | slightly exserted, margins ciliate, glabrous. |
included, glabrous. |
Stigmas | distinctly shorter than corolla tube. |
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2n | = 34. |
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Erythranthe primuloides |
Erythranthe diffusa |
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Phenology | Flowering Jun–Aug. | Flowering Apr–Jun. |
Habitat | Wet meadows, seeps, streamsides. | Moist areas in openings of chaparral, dry meadows in pine and oak woodlands. |
Elevation | 600–3400 m. (2000–11200 ft.) | 300–1800 m. (1000–5900 ft.) |
Distribution |
AZ; CA; ID; MT; NM; NV; OR; UT; WA
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CA; Mexico (Baja California)
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Discussion | Flowers in Erythranthe primuloides and E. linearifolia characteristically appear to be scapose, but the scapes are pedicels arising from axils of greatly foreshortened stems. Occasionally in both species the internodes may lengthen somewhat, and the leaves are not so densely clustered at the base of the stems. In northern Klamath, western Deschutes, and eastern Douglas counties, Oregon, an area within the range of typical populations, Erythranthe primuloides has distinctively large corollas (limbs 10–15 mm wide). Apparent clones of large-flowered and smaller-flowered plants sometimes grow in close proximity or even intermixed, appearing as two different entities. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe diffusa has been included previously in E. palmeri but can be distinguished morphologically by glabrous margins on the calyx and pubescence on the distal end of the style. It occurs in Orange, Riverside, and San Diego counties as well as close to the California border in Baja California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 389. | FNA vol. 17, p. 387. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus primuloides, M. nevadensis, M. pilosellus, M. primuloides var. minimus, M. primuloides var. pilosellus | Mimulus diffusus, M. grantianus |
Name authority | (Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | (A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) |
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