Flora of North America species comparison

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Erythranthe decora

Erythranthe arenicola

mannered monkeyflower, northwestern monkey -flower, sharp-leaf monkey-flower, showy monkey-flower

beach monkeyflower
Habit Perennials, rhizomatous, sometimes producing numerous, long, remotely leafy runners from basal cauline nodes. Annuals, fibrous-rooted or slender-taprooted, rarely rooting at nodes.
Stems

erect, simple, 20–100 cm, distals densely, minutely hirtellous.

erect, rarely prostrate to prostrate-ascending, few-branched, 3–17 cm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular.
Leaves

cauline, basal usually not persistent;

petiole: proximals 8–25 mm, midcauline 3–5 mm, distalmost 0 mm;

blade palmately (3–)5–7-veined, broadly ovate-triangular to ovate-lanceolate, 20–50(–60) × 10–30(–40) mm, usually 1–2 times longer than wide, base rounded to truncate to shallowly cuneate, margins dentate, teeth sharp-pointed, apex acute, surfaces sometimes glabrate, distals densely, minutely hirtellous.

basal and cauline;

petiole: basal 2–8 mm or mid and distals absent;

blade palmately 3–5-veined, suborbicular to broadly ovate or depressed-ovate, 5–17 × 6–15 mm, base truncate or truncate-cuneate to subcordate, margins subentire or crenulate, apex rounded to obtuse, surfaces moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular.
Flowers

herkogamous, (1 or)2–7(–14), from distal nodes.

herkogamous, 1–6, at distal nodes, chasmogamous.
Styles

minutely, prominently hirsutulous to villosulous.

hirtellous.
Corollas

yellow to chrome yellow, throat floor and tube usually red-spotted, bilaterally symmetric, bilabiate;

tube-throat broadly funnelform, 18–26 mm, exserted (8–)10–15 mm beyond calyx margin;

limb expanded 22–30 mm.

yellow, red-dotted, bilaterally symmetric, bilabiate;

tube-throat funnelform, 11–20 mm, exserted 4–8 mm beyond calyx margin;

limb expanded 10–18 mm.
Fruiting pedicels

18–35(–40) mm, distals densely, minutely hirtellous, hairs often slightly deflexed.

9–17 mm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular.
Fruiting calyces

green, sometimes red-spotted, ovoid, inflated, sagittally compressed, 15–19 mm, distals densely, minutely hirtellous, throat closing, lobe margins (sinuses) villous.

nodding, ovoid-campanulate, inflated, sagittally compressed, 9–16 mm, moderately villous-glandular, hairs gland-tipped, or mixed hirtellous and stipitate-glandular, throat closing.
Capsules

included, 8–10 mm.

included, 5–12 mm.
Anthers

included, glabrous.

included, glabrous.

Erythranthe decora

Erythranthe arenicola
Phenology Flowering May–Aug. Flowering Apr–Aug.
Habitat River banks, streamsides, dripping banks, moist meadows. Sandy beaches, especially in moist hollows among dunes, sea cliff bases, chaparral near beaches, mudstone outcrops.
Elevation 1000–1600 m. (3300–5200 ft.) 0–100 m. (0–300 ft.)
Distribution
from FNA
ID; OR; WA; BC
[WildflowerSearch map]
from FNA
CA
Discussion

Erythranthe decora is distinct in its uniformly ovate to ovate-lanceolate leaf blades with truncate bases and regularly toothed margins, relatively long internodes, rhizomatous habit, mostly unbranched stems, often with leafy runners from basal nodes, large corollas, hairy styles, and minutely hirtellous stems, pedicels, calyces, and leaf surfaces. The densely produced rhizomes suggest a relationship with the E. tilingii group. A population in Clearwater County, Idaho, appears to be long-disjunct from the main range of the species in northwestern Oregon and the western half of Washington.

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

F. W. Pennell (1947, 1951) considered Erythranthe arenicola an endemic of Monterey County, but plants from adjacent San Luis Obispo and Santa Cruz counties also belong here. Most of the localities are at seaside, but some are more than a mile inland. Erythranthe arenicola is hypothesized here to be a derivative of E. guttata or E. grandis, retaining the herkogamous breeding system of its putative ancestor but reduced in size and duration.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 414. FNA vol. 17, p. 412.
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. 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. 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
Synonyms Mimulus guttatus var. decorus, M. decorus Mimulus guttatus subsp. arenicola
Name authority (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) (Pennell) 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).



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