Flora of North America species comparison

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Erythranthe arenaria

Erythranthe gracilipes

sand-loving monkeyflower

slender-stalk monkeyflower
Habit Annuals, fibrous-rooted or filiform-taprooted. Annuals, taprooted.
Stems

erect to ascending, straight or geniculate at nodes, simple or branched, 5–20 cm, villous-glandular, hairs 0.2–0.8 mm, gland-tipped.

erect, simple or branched, 5–15 cm, sparsely glandular-puberulent.
Leaves

basal and cauline;

petiole 0 mm or proximals 1–3(–5) mm;

blade 1-veined or palmately 3-veined, elliptic to narrowly elliptic, ovate-elliptic, or ovate-lanceolate, 5–12(–17) × 3–7 mm, base rounded to cuneate-attenuate, margins entire or sparsely dentate to serrate, apex acuminate to acute or obtuse, surfaces villous-glandular, hairs 0.2–0.8 mm, gland-tipped.

cauline, basal not persistent;

petiole 0 mm;

blade 1-veined or palmately 3-veined (in broader ones), linear to lanceolate, (3–)7–13 × 1–3 mm, base attenuate, margins entire, sometimes toothed, apex acute to obtuse, surfaces sparsely glandular-puberulent.
Flowers

herkogamous, 1–22, from proximal to distal nodes.

herkogamous, 1–15, from distal or medial to distal nodes.
Styles

glabrous.

glabrous.
Corollas

yellow, abaxial limb red-dotted, bilaterally symmetric, weakly bilabiate;

tube-throat funnelform, 9–12(–14) mm, exserted beyond calyx margin;

lobes broadly obovate, apex rounded.

pink to rose lavender, throat deep pink to purple with 2 yellow longitudinal ridges, bilaterally symmetric, strongly bilabiate, 2 adaxial lobes much reduced, smaller than 3 abaxials;

tube-throat cylindric, 7–10 mm, exserted beyond calyx margin;

limb expanded 5–9 mm, abaxial lobes rounded and shallowly 2-fid, abaxial limb glabrous or sparsely bearded.
Fruiting pedicels

divergent-arcuate, 10–23 mm, villous-glandular, hairs 0.2–0.8 mm, gland-tipped.

8–30 mm.
Fruiting calyces

usually red-dotted, narrowly campanulate, not or weakly inflated, 5–7(–9) mm, margins distinctly toothed or lobed, villous-glandular, ribs angled, lobes pronounced, erect.

becoming red to straw colored, campanulate, 4–7 mm, margins distinctly toothed or lobed, sparsely glandular-puberulent, ribs thickened, lobes pronounced, erect, margins ciliate.
Capsules

included, 4–7 mm.

included, 4–5 mm.
Anthers

included, glabrous.

included, glabrous.
2n

= 32.

Erythranthe arenaria

Erythranthe gracilipes
Phenology Flowering May–Sep. Flowering Apr–May.
Habitat Sandy flats, bars, gullies, washes, trails, roadcuts, seasonal creek beds and drainages, rocky slopes, seepy loam, ditches, lake edges, meadows, openings in pine-fir and pine-oak woodlands. Open areas in thin decomposed granite soils, often on edges of large granite boulders.
Elevation (100–)500–2600(–2800) m. ((300–)1600–8500(–9200) ft.) 500–1300 m. (1600–4300 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
CA
[WildflowerSearch map]
Discussion

Erythranthe arenaria is known from a cluster of six counties of the central Sierra Nevada: Fresno, Madera, Mariposa, Merced, Tulare, and Tuolumne.

Most plants of Erythranthe arenaria have relatively even-sized cauline leaves, all sessile to proximally subsessile. Plants in the Yosemite area with persistent basal leaves that are short-petiolate, ovate with a cuneate base, and relatively larger than the more distal cauline ones, and possibly related to E. arenaria, have been named M. floribundus var. subulatus. These might be construed as showing the influence of E. geniculata, but that species occurs only at the lower range of elevation of E. arenaria, while plants referable to Mimulus floribundus var. subulatus occur at least to 2300 m and also have the erect habit characteristic of E. arenaria. These variants should be investigated, especially in the Yosemite area where they appear to be relatively common, with the possibility that they indeed represent a distinct entity.

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

Erythranthe gracilipes is endemic to the foothills of the central Sierra Nevada in Fresno, Madera, and Mariposa counties and apparently is most abundant after fire.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 403. FNA vol. 17, p. 385.
Parent taxa Phrymaceae > Erythranthe Phrymaceae > Erythranthe
Sibling taxa
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, 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. 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 arenarius, M. floribundus var. subulatus, M. multiflorus, M. subulatus, M. trisulcatus Mimulus gracilipes
Name authority (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) (B. L. Robinson) N. S. Fraga: Phytoneuron 2012-39: 35. (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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