Flora of North America species comparison

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Erythranthe lewisii

great purple monkey-flower, great purple or Lewis' monkeyflower, Lewis' monkey flower, pink monkey-flower, purple monkey-flower
Habit Perennials, rhizomatous.
Stems

erect, usually simple, (15–)25–60(–75) cm, stipitate-glandular to glandular-villous.
Leaves

cauline;

petiole 0 mm;

blade palmately veined, elliptic to ovate, ovate-lanceolate, or broadly oblanceolate, (10–)25–75(–90) × 5–35 mm, base rounded to cuneate, subclasping, margins denticulate, subentire, or entire, apex acute, surfaces stipitate-glandular to glandular-villous.
Flowers

herkogamous, 2–6(–10), axillary at leafy medial to distal nodes.
Styles

glabrous.
Corollas

purple, rarely crimson, pale violet, white, pinkish white, yellowish white, or lavender, sometimes lined with red dots, bilaterally symmetric, strongly bilabiate;

tube-throat funnelform, 22–28 mm, exserted beyond calyx margins;

lobe apex usually truncate to shallowly convex, shallowly retuse, throat open.
Fruiting pedicels

(25–)35–70 mm, stipitate-glandular to glandular-villous.
Fruiting calyces

broadly cylindric-campanulate, not inflated, 15–22 mm, stipitate-glandular to glandular-villous, tube 12–15(–17) × 9–12 mm.
Capsules

included, 6–11 mm.
Anthers

included, white-villous, thecae spreading.
2n

= 16.

Erythranthe lewisii
Phenology Flowering Jun–Sep.
Habitat Stream banks, springs, wet meadows, subalpine slopes, talus, crevices, ditches.
Elevation 600–2900(–3200) m. [2000–9500(–10500) ft.]
Distribution
from FNA
AK; CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
Discussion

Erythranthe lewisii in California occurs in Modoc, Siskiyou, and Trinity counties. California records from Shasta County and south previously identified as E. lewisii are identified here as E. erubescens. The record for E. lewisii in Alaska is documented by this collection: Hyder [noted on handwritten label as "New to Alaska, Standley"], damp land, 27 June 1924, K. Whited 1291 (MO).

Apparent exceptions to the characteristic flower color are these: white to lavender in Nevada (Clark County, Charleston Mountains, Train 2068, MO); pinkish white in Washington (Skamania and Yakima counties, Mt. Paddo, Suksdorf 5779, MO); white or tinged with yellow, in Wyoming (Teton County, as described by Nelson in the protologue of Mimulus lewisii var. tetonensis).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 392. Treatment authors: Guy L. Nesom, Naomi S. Fraga.
Parent taxa 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. 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. 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. veronicifolia
Synonyms Mimulus lewisii, M. lewisii var. tetonensis
Name authority (Pursh) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (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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