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calyx-nose monkeyflower, erythranthe nasuta, large-nose monkey-flower, little yellow monkey-flower, snouted monkey-flower

Mexican moss monkeyflower

Habit Annuals, fibrous-rooted or slender-taprooted. Annuals, usually fibrous-rooted, rarely rooting at proximal nodes.
Stems

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.

erect, sometimes decumbent-ascending, branched, 4–30 cm, minutely stipitate-glandular, also delicately villosulous-glandular along whole length.

Leaves

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.

basal and cauline;

petiole 1–3 mm, cauline blade slightly or hardly reduced in size from basal, becoming subsessile to sessile (1–3 pairs of cauline leaves);

blade palmately 3(–5)-veined, orbicular-ovate to oblong-ovate, 7–28 × 5–22 mm, base truncate to shallowly cuneate, margins shallowly dentate to denticulate, teeth 3–6 per side, apex rounded to obtuse, surfaces villous, hairs thin-walled, vitreous, eglandular or minutely gland-tipped, usually also minutely stipitate-glandular.

Flowers

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

plesiogamous, 1–6(–10), axillary at all nodes, chasmogamous.

Styles

minutely scabrous or glabrous.

glabrous.

Corollas

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.

light yellow, red-spotted, weakly bilaterally symmetric, ± bilabiate;

tube-throat narrowly funnelform, 5–7 mm, exserted 1–2 mm beyond calyx margin;

limb expanded 2–4 mm.

Fruiting pedicels

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

15–30(–55) mm, minutely stipitate-glandular, sometimes minutely hirtellous and minutely stipitate-glandular, sometimes short glandular-villous.

Fruiting calyces

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.

nodding 90º at maturity, usually 3(–5)-veined, ovoid, inflated, sagittally compressed, 6–10 mm, minutely stipitate-glandular, throat closing, lobes usually 3 or 3 and 5 on same plant, if 5 then with 2 interpolated lobes much smaller than abaxial pair.

Capsules

included, (4–)5–9(–10) mm.

included, 2–4 mm.

Anthers

included, glabrous.

included, glabrous.

2n

= 26, 28, 56.

= 30, 32.

Erythranthe nasuta

Erythranthe calciphila

Phenology Flowering (Mar–)Apr–Jun(–Jul). Flowering Mar–Sep(–Nov).
Habitat 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. Rocky knobs, moist boulders, wet rock faces, roadcuts, seepages, springs, with moss, usually in pine or pine-oak woods.
Elevation (0–)600–2300(–3200) m. ((0–)2000–7500(–10500) ft.) 1800–2500 m. (5900–8200 ft.)
Distribution
from FNA
AZ; CA; ID; NM; NV; OR; UT; WA; BC; Mexico (Baja California, Sonora)
[WildflowerSearch map]
from FNA
AZ; Mexico (Chihuahua, Durango, Sinaloa, Sonora)
Discussion

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.)

Erythranthe calciphila is recognized by its annual duration (fibrous-rooted), short, erect stems with few, even-sized leaves (the basal often persistent), delicate stipitate-glandular vestiture, three-lobed calyces that are relatively large in fruit, small corollas, and autogamous reproduction. Plants rarely root at proximal nodes. In Arizona, at the northernmost extremity of its range, E. calciphila occurs in the Chiricahua, Huachuca, and Mule mountains of Cochise County.

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

Source FNA vol. 17, p. 418. FNA vol. 17, p. 424.
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. 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
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. 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
Synonyms 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 Mimulus calciphilus, M. minutiflorus
Name authority (Greene) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) (Gentry) G. L. Nesom: Phytoneuron 2012-39: 43. (2012)
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