Flora of North America species comparison

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Erythranthe alsinoides

Erythranthe nasuta

chickweed monkey-flower, wing-stem monkey-flower

calyx-nose monkeyflower, erythranthe nasuta, large-nose monkey-flower, little yellow monkey-flower, snouted monkey-flower
Habit Annuals, fibrous-rooted. Annuals, fibrous-rooted or slender-taprooted.
Stems

erect, usually simple, (0.5–)2–6(–15) cm, glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped, nodes 2(or 3), usually red-tinged.

erect to ascending-erect or decumbent, simple or branched from proximal nodes, 4-angled, sometimes shallowly 4-winged, thin-wiry, or fistulose, 2–35(–100) cm, glabrous except for a consistently small, villous-glandular area just above nodes, sometimes hirtellous distally.
Leaves

basal and cauline;

petiole 1–20(–30) mm, distinctly 3-veined (winged);

blade palmately 3-veined, lanceolate-ovate to ovate, elliptic, or suborbicular, 3–18(–32) × 3–12(–25) mm, base cuneate to truncate, margins dentate to denticulate or subentire, apex acute to obtuse or rounded, surfaces glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped.

basal and cauline or basal not persistent;

petiole: proximals to medials 3–35 mm, base narrowly flanged, distals 0 mm;

blade ± red tinged abaxially or purple-spotted, palmately 3–5-veined, elliptic-ovate to broadly ovate, suborbicular, or depressed-ovate, (5–)10–49(–80) × (3–)10–25(–60) mm, as long as wide or wider than long, proximals largest and persistent, base cuneate to truncate or subcordate, margins irregularly dentate to dentate-serrate or nearly lacerate-dentate, commonly doubly toothed, main teeth 4–9 per side, sometimes sublacerate to sublyrate basally, apex acute to obtuse, surfaces glabrous, sometimes hirtellous, hairs dull, terete, sharp-pointed, eglandular.
Flowers

herkogamous, 1–4(–8), from distal or medial to distal nodes.

plesiogamous, (1 or)2–12(–20), from distal nodes, sometimes from medial to distal, chasmogamous or cleistogamous.
Styles

glabrous.

minutely scabrous or glabrous.
Corollas

yellow, abaxial limb with a large maroon splotch, also red-spotted, bilaterally symmetric, ± bilabiate;

tube-throat funnelform-cylindric, 6–9 mm, exserted beyond calyx margin;

throat open, palate villous, abaxial ridges low.

yellow, throat usually red-spotted, abaxial limb base usually with a red splotch, bilaterally symmetric, weakly bilabiate;

tube-throat broadly cylindric, (5–)8–12 mm, exserted (0–)1–2 mm beyond calyx margin;

limb expanded 6–12 mm.
Fruiting pedicels

15–32 mm, glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped.

(3–)7–20(–40) mm, longer than subtending leaves, glabrate, sometimes glandular-villous adaxially at axils.
Fruiting calyces

purplish, slightly ridge-angled, campanulate-cylindric, weakly or not inflated, 5–8 mm, margins subtruncate, sparsely minutely stipitate-glandular, lobes 4, (0–)0.5–1 mm, sometimes barely evident, 1 lobe usually slightly longer, margins appearing subtruncate, shallowly convex to rounded-mucronulate.

nodding 30–180º, usually purple-tinged or -spotted, ovoid-campanulate, inflated, sagittally compressed, (5–)10–15(–19) mm, glabrous or minutely hirtellous to appressed-hirtellous, minutely short-ciliate at sinuses, throat closing, adaxial lobe usually longer than abaxial, slightlty falcate.
Capsules

included, (3–)5–7 mm.

included, (4–)5–9(–10) mm.
Anthers

included, glabrous.

included, glabrous.
2n

= 26, 28, 56.

Erythranthe alsinoides

Erythranthe nasuta
Phenology Flowering Mar–Jun. Flowering (Mar–)Apr–Jun(–Jul).
Habitat Open, rocky slopes, cliff faces, bluffs, mossy rock crevices, ledges, moist rocks, roadsides, along wet paths and trails. Cliff faces, ledges, crevices, and bases, wet rocks in rivers, streamsides, sand bars, mossy seeps, wet clay banks, moist fields, sandy soils, depressions over granite, roadsides.
Elevation 10–1900 m. (0–6200 ft.) (0–)600–2300(–3200) m. ((0–)2000–7500(–10500) ft.)
Distribution
from FNA
CA; ID; OR; WA; BC
[WildflowerSearch map]
from FNA
AZ; CA; ID; NM; NV; OR; UT; WA; BC; Mexico (Baja California, Sonora)
[WildflowerSearch map]
Discussion

Erythranthe alsinoides is distinct in its short, erect stems with few nodes, small, mostly ovate to elliptic-ovate, petiolate leaves, minutely stipitate-glandular vestiture, small corollas with a prominent maroon splotch on the abaxial limb, small, non-inflated mature calyces and, most especially, by its nearly truncate calyx margin. Erythranthe pulsiferae is superficially similar to E. alsinoides but has larger calyces borne on divergent-arcuate pedicels, smaller leaf blades with attenuate to cuneate bases, and the corolla limbs are smaller and lack a prominent maroon splotch.

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

Erythranthe nasuta is characterized by its annual duration (fibrous-rooted), four-angled stems, broadly ovate leaves commonly with irregularly toothed margins, calyces with longish, protruding adaxial lobes, and short corollas (all autogamous, chasmogamous or cleistogamous). Flowers may vary significantly in size, even on a single plant. Plants commonly produce tiny cleistogamous flowers on branches (usually at the base of the plant) separate from those with larger flowers. At least the distal and bracteal leaves consistently have hirtellous to hirsutulous adaxial surfaces, even in the smallest of plants. Glandular vestiture is produced only in the axils. Some plants, apparently at the upper limits of populational variability, produce thick-fistulose stems to 100 cm, large leaves (to 80 × 60 mm), and large fruiting calyces (16–19 mm).

Plants described as Mimulus sookensis (B. G. Benedict 1993; Benedict et al. 2012) are tetraploid and have been hypothesized to have arisen as alloploids between Erythranthe nasuta and E. microphylla in two or more independent events. In morphology, however, they are indistinguishable from E. nasuta and are treated here within it. In contrast, experimental hybrids and naturally occurring nasuta-microphylla hybrids apparently of contemporary origin are intermediate in morphology (see review by G. L. Nesom 2013e). The tetraploid occurs from northern California to southwestern British Columbia (A. L. Sweigart et al. 2008; Benedict et al. 2012).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 395. FNA vol. 17, p. 418.
Parent taxa Phrymaceae > Erythranthe Phrymaceae > Erythranthe
Sibling taxa
E. acutidens, 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. 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. 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. 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 alsinoides Mimulus nasuta, M. bakeri, M. cuspidatus, M. erosus, M. guttatus var. gracilis, M. guttatus var. nasutus, M. langsdorffii var. nasutus, M. luteus var. gracilis, M. puncticalyx, M. sookensis, M. subreniformis
Name authority (Douglas ex Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 37. (2012) (Greene) G. L. Nesom: Phytoneuron 2012-39: 44. (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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