Flora of North America species comparison

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Erythranthe breweri

Erythranthe floribunda

Brewer's monkey-flower

many-flower monkey-flower, purple-stem monkey-flower
Habit Annuals, taprooted. Annuals, fibrous-rooted or filiform-taprooted.
Stems

erect, simple or branched from basal nodes, 2–20 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

erect to decumbent, sometimes procumbent-trailing, straight or geniculate at nodes, simple or many-branched, 3–22(–40) cm, villous-glandular, hairs greatly variable in length and density, gland-tipped, sometimes 0.2–0.5 mm, sparsely stipitate-glandular.
Leaves

cauline, basal not persistent;

petiole 1–4 mm;

blade 1-veined or palmately 3-veined (in broader ones), linear-oblanceolate to linear-lanceolate or linear, (5–)10–15(–20) × 1–2(–5) mm, base attenuate, margins entire or remotely mucronulate distally, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

cauline, basal mostly deciduous by flowering;

petiole 1–12 mm;

blade pinnately to subpalmately veined, ovate, (3–)8–25(–35) × (1–)5–18(–26) mm, base cuneate to truncate or cordate, margins serrate to sparsely dentate, apex acute, surfaces villous-glandular, hairs greatly variable in length and density, gland-tipped, sometimes 0.2–0.5 mm, sparsely stipitate-glandular.
Flowers

herkogamous, 1–8, from medial to distal nodes.

plesiogamous, 1–20, from proximal to distal nodes.
Styles

glabrous.

glabrous.
Corollas

pink to red, rose red, red-purple, or lavender, throat usually light purple to lavender (similar in color to rest of corolla), palate ridges yellow, abaxial limb with deep pink markings, bilaterally symmetric, strongly bilabiate;

tube-throat cylindric-funnelform, 3–7 mm, exserted 0–1 mm beyond calyx margin;

limb expanded 2–3 mm, lobes notched or entire.

yellow, abaxial limb red-dotted, bilaterally symmetric, weakly bilabiate;

tube-throat funnelform-cylindric, (4–)5–10 mm, exserted slightly beyond calyx margin or not;

limb expanded 3–4 mm diam., lobes usually oblong, apex notched.
Fruiting pedicels

4–12 mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

5–20(–26) mm, villous-glandular, hairs greatly variable in length and density, gland-tipped, sometimes 0.2–0.5 mm, sparsely stipitate-glandular.
Fruiting calyces

red-dotted, strongly angled, cylindric-campanulate, 4–7 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading.

greenish or purplish to red-dotted, cylindric, ± inflated, 4–7 mm, margins distinctly toothed or lobed, villous-glandular, lobes pronounced, erect.
Capsules

included, 3–7 mm.

included, 4–7 mm.
Anthers

included, glabrous.

included, glabrous.
2n

= 32.

Erythranthe breweri

Erythranthe floribunda
Phenology Flowering Jun–Aug(–Sep). Flowering (May–)Jun–Aug(–Sep).
Habitat Seeps and springs, damp rocks, vernal creek beds, cliffs, granite outcrops, rocky ridges, gravelly areas, meadow edges, stream edges. Under overhangs, moist roofs of caves, wet rock crevices, cliff faces, wet cliff bases, below waterfalls, seeps, springs, humus and moist soils over rocks and slabs, moist slopes, ditches and pond edges, wet edges of creeks and rivers, drying mud on margins of wetland depressions, creek beds, wet or swampy meadows, along trails, in lodgepole pine, ponderosa pine, ponderosa pine-Douglas fir, and spruce-fir woodlands.
Elevation (700–)1300–3500 m. ((2300–)4300–11500 ft.) (100–)1800–2600(–3100) m. ((300–)5900–8500(–10200) ft.)
Distribution
from FNA
AZ; CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
from FNA
AR; AZ; CA; CO; ID; MT; NM; NV; OR; SD; UT; WA; WY; AB; BC; Mexico (Baja California, Baja California Sur, Chihuahua, Sinaloa, Sonora)
[WildflowerSearch map]
Discussion

Some plants identified here as Erythranthe floribunda in Arizona and southwestern New Mexico are distinctive in their prominently inflated calyces, sessile to subsessile leaves with attenuate bases and palmately three- to five-veined venation, and much-elongated pedicels (20–43 mm); numerous intermediates in Arizona make it difficult to conclude that the variants represent an entity discontinuous from plants of typical morphology. The variant morphology has not been observed among Mexican populations. Further discussion of this situation was given by G. L. Nesom (2012h).

Erythranthe floribunda has been documented from 12 counties in northern Arkansas (Carroll, Cleburne, Crawford, Franklin, Izard, Johnson, Logan, Newton, Pope, Searcy, Stone, and Washington), where it occurs at 300–500 m. The unpublished name Mimulus floribundus subsp. moorei Iltis appears in various checklists in reference to the Arkansas plants, but there appears to be no basis for treating them as distinct from the rest of the species. Elsewhere in the main range (western states), scattered variants extremely reduced in size, leaves, flowers, and overall stature appear to be at the lower limits of the species rather than taxonomically distinct.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 390. FNA vol. 17, p. 404.
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. 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. 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
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. 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 Eunanus breweri, Mimulus breweri, M. rubellus var. breweri Mimulus floribundus, M. deltoideus, M. floribundus var. membranaceus, M. membranaceus, M. peduncularis, M. serotinus
Name authority (Greene) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012) (Lindley) G. L. Nesom: Phytoneuron 2012-39: 38. (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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