Flora of North America species comparison

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Erythranthe geyeri

Erythranthe diffusa

Geyer's monkeyflower, mimule de James

Palomar monkeyflower
Habit Perennials, rhizomatous, rooting at nodes. Annuals, taprooted.
Stems

decumbent-ascending to ascending or erect-ascending, branched, (3–)10–40 cm, glabrous.

erect, simple or branched from basal nodes, 4–20 cm, minutely puberulent.
Leaves

cauline, basal not persistent;

petiole 3–10(–20) mm or 0 mm distally;

blade palmately 3–5-veined, suborbicular to depressed-ovate or broadly elliptic-ovate to reniform, 6–25 mm, relatively even-sized or largest often at mid stem, bracteal reduced, base cuneate to truncate or subcordate, margins shallowly dentate to crenate-dentate, teeth 3–7(–10) per side, apex rounded, adaxial surface of distals sparsely short villous-glandular or glabrous.

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

plesiogamous, 2–8(–12), from distal nodes, sometimes from most nodes, very loosely racemose.

herkogamous, 1–36, from distal or medial to distal nodes.
Styles

glabrous.

distally pubescent.
Corollas

yellow, sparsely red-dotted or not, bilaterally symmetric, weakly bilabiate;

tube-throat cylindric-funnelform, 6–8 mm, exserted 1–3 mm beyond calyx margin;

limb expanded 5–8 mm.

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

18–30 mm, sparsely short villous-glandular or glabrous.

ascending to spreading horizontally, (2–)12–60(–68) mm.
Fruiting calyces

obtriangular to broadly obtriangular or deeply cupulate, inflated, sagittally compressed, (7–)8–12 mm, sparsely short villous-glandular or glabrous, throat not closing, lateral lobes shallowly convex-mucronulate, adaxial ovate with apex rounded.

sometimes red-dotted, campanulate, 3–6 mm, margins distinctly toothed or lobed, minutely puberulent, ribs weak, lobes pronounced, erect, margins glabrous.
Capsules

included, (4.5–)5–8 mm.

included, 5–8 mm.
Anthers

included, glabrous.

included, glabrous.
Stigmas

distinctly shorter than corolla tube.
2n

= 30.

Erythranthe geyeri

Erythranthe diffusa
Phenology Flowering May–Aug(–Oct). Flowering Apr–Jun.
Habitat Edges of flowing streams, marsh edges, drainage ditches, seepage areas, springs, muddy or moist banks. Moist areas in openings of chaparral, dry meadows in pine and oak woodlands.
Elevation 200–2500 m. (700–8200 ft.) 300–1800 m. (1000–5900 ft.)
Distribution
from FNA
AZ; CO; IA; IL; KS; MI; MN; MO; NE; NM; OK; PA; SD; TX; WI; WY; AB; MB; ON; QC; SK; Mexico (Chihuahua, Coahuila, Distrito Federal, Durango, Hidalgo, Nuevo León, México, Querétaro, San Luis Potosí, Sonora, Veracruz, Zacatecas)
[WildflowerSearch map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
Discussion

Erythranthe geyeri has commonly been regarded as conspecific with E. glabrata (Kunth) G. L. Nesom (as Mimulus glabratus var. jamesii), but typical E. glabrata has a different chromosome number and distinct morphology and its range does not reach the United States. In Mexico, the two species are broadly sympatric without intermediates. An allozyme study of the M. glabratus complex (R. K. Vickery 1990) indicated that the Great Plains populations of E. geyeri are distinct from those in New Mexico and Mexico, corresponding to a difference in pedicel vestiture.

(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. 406. FNA vol. 17, p. 387.
Parent taxa Phrymaceae > Erythranthe Phrymaceae > Erythranthe
Sibling taxa
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. cordata, E. decora, E. dentata, E. diffusa, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. primuloides, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. cordata, E. decora, E. dentata, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. geyeri, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. primuloides, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
Synonyms Mimulus geyeri, M. glabratus var. fremontii, M. glabratus var. jamesii, M. glabratus var. oklahomensis, M. jamesii, M. jamesii var. fremontii Mimulus diffusus, M. grantianus
Name authority (Torrey) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) (A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (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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