Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Erythranthe filicaulis

Erythranthe guttata

Hetch Hetchy monkey-flower, slender-stem monkeyflower

common monkey-flower, seep monkey-flower, yellow monkey-flower
Habit Annuals, taprooted. Perennials, rhizomatous, sometimes rooting at proximal nodes.
Stems

erect, simple or branched at basal nodes, 4–30 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

erect to ascending-erect, branched distally, sometimes fistulose, to 10 mm wide, pressed, (6–)15–65(–80) cm, villous-glandular or moderately to densely hirtellous, hairs eglandular or glandular and eglandular.
Leaves

cauline, basal usually not persistent;

petiole 0 mm;

blade 1-veined or palmately 3-veined, linear to oblanceolate, 6–15 × (1–)2–3 mm, base attenuate, margins entire to remotely mucronulate, teeth 1–3 per side, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

basal and cauline or basal not persistent;

petiole 0 mm or proximals 1–95 mm;

blade subpinnately, sometimes palmately, 5–7-veined, ovate-elliptic to ovate or suborbicular, 4–125 mm, 1–2 times longer than wide, gradually or abruptly reduced in size distally, base rounded to cuneate to truncate, margins crenate to coarsely dentate, proximally shallowly toothed to irregularly small-lobed or lyrate-dissected, apex rounded to obtuse, surfaces glabrous.
Flowers

herkogamous, 2–8, from medial to distal nodes.

herkogamous, (1–)3–20(–28), from distal nodes, sometimes in relatively compact racemes with reduced bracts.
Styles

glabrous.

minutely hirsutulous to villosulous.
Corollas

pink to purple, throat dark red-purple, palate ridges yellow, bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular;

tube-throat cylindric-funnelform, 8–12(–17) mm, exserted beyond calyx margin;

limb expanded 10–14 mm, lobes notched, palate villous.

yellow, red-dotted, bilaterally symmetric, bilabiate;

tube-throat funnelform, (10–)12–20 mm, exserted 3–5 mm beyond calyx margin;

limb expanded 12–24 mm.
Fruiting pedicels

9–30 mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

15–40(–60) mm, villous-glandular or moderately to densely hirtellous, hairs eglandular or glandular and eglandular.
Fruiting calyces

reddish brown-spotted, strongly angled, cylindric-campanulate, 7–9 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading.

nodding, usually without red markings, ovate-campanulate, inflated, sagittally compressed, 11–17(–20) mm, villous-glandular or moderately to densely hirtellous, hairs eglandular or glandular and eglandular, throat closing.
Capsules

included, 5–7 mm.

included, 7–11(–12) mm.
Anthers

included, hirtellous.

included, glabrous.
2n

= 16.

= 28, 56.

Erythranthe filicaulis

Erythranthe guttata
Phenology Flowering May–Jul. Flowering Apr–Sep.
Habitat Moist open areas on gentle slopes, meadows, roadsides, gravelly soils. Springs and seeps, marshes, beaver dams, along rivers, streams, and irrigation canals, loamy soils in conifer forests, wet and damp meadows, wet roadsides.
Elevation 800–1800 m. (2600–5900 ft.) 20–3200(–3700) m. (100–10500(–12100) ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
AK; AZ; CA; CO; CT; ID; MI; MT; NE; NM; NV; NY; OR; PA; SD; TX; UT; WA; WY; AB; BC; NB; NT; SK; YT; Mexico (Baja California, Baja California Sur, Chihuahua, Coahuila, Nayarit, Sonora) [Introduced in Europe]
[WildflowerSearch map]
Discussion

Erythranthe filicaulis is known only for certain from Mariposa and Tuolumne counties. Kappler 1691 (UCLA) from Madera County also may be this species.

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

Erythranthe guttata is markedly variable in stature, leaf shape, vestiture, flower size, and the separation distance between anthers and stigma; it ranges from subalpine and near-alpine habitats into desert situations where water is available.

In all of Colorado, the Four Corners area, and north-central New Mexico, the vestiture of stems and calyces is consistently densely hirsute-hirtellous, without glandular hairs. Plants with similar vestiture also occur in British Columbia, Oregon, and Washington, and in scattered localities elsewhere. In northwestern Arizona, California Nevada, and southern Oregon, vestiture is consistently villous-glandular, without eglandular hairs. Elsewhere in the geographic range the vestiture is a mix of hirsute-hirtellous (eglandular) and villous-glandular hairs. Other morphological variants and patterns, as well as variation in ploidy level, within Erythranthe guttata were discussed by G. L. Nesom (2012i).

Plants of Erythranthe guttata with extremely large corollas have been frequently collected on the Aleutian Islands, Kodiak Island, and in other Alaskan localities (for example, Admiralty Island Amakuk, Juneau, and Yakutat Bay). Corolla tube-throats are 19–26 mm, and the limbs are expanded to 18–25 mm. The type collection of E. guttata is one of these plants, and the name E. guttata may prove to apply most appropriately only to Alaskan populations. Diploids and tetraploids appear to be sympatric in Alaska.

Mimulus guttatus subsp. haidensis was described as an endemic subalpine race that occurs in and along the flanks of the Queen Charlotte Mountains on Graham Island and Moresby Island. The subspecies was distinguished on the basis of its hirtellous vestiture, but plants of similar hirtellous vestiture occur over the whole range of the species. A tetraploid chromosome number (2n = 56) was reported for subsp. haidensis from a total of five localities on Graham Island and Moresby Island (J. A. Calder and R. L. Taylor 1968, vol. 2), and diploids (2n = 28) were documented from one locality on each of the two islands. At least one of the diploids has densely hirtellous stems, pedicels, and calyces, matching the morphology of subsp. haidensis.

Erythranthe guttata is naturalized in Europe and has been introduced to the northeastern United States (Connecticut, Michigan, New York, and Pennsylvania) and eastern Canada (New Brunswick).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 391. FNA vol. 17, p. 411.
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. 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. 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 filicaulis, M. biolettii Mimulus guttatus, M. clementinus, M. equinus, M. glabratus var. adscendens, M. grandiflorus, M. guttatus subsp. haidensis, M. guttatus var. puberulus, M. hirsutus, M. langsdorffii var. argutus, M. langsdorffii var. californicus, M. langsdorffii var. guttatus, M. langsdorffii var. minimus, M. langsdorffii var. platyphyllus, M. lyratus, M. paniculatus, M. petiolaris, M. prionophyllus, M. puberulus, M. rivularis
Name authority (S. Watson) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012) (de Candolle) G. L. Nesom: Phytoneuron 2012-39: 43. (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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers