Erythranthe arenaria |
Erythranthe filicifolia |
|
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sand-loving monkeyflower |
fern-leaf monkeyflower |
|
Habit | Annuals, fibrous-rooted or filiform-taprooted. | Annuals, fibrous-rooted. |
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 or slightly ascending from base, sometimes purplish, simple or few-branched from proximal nodes, 3–38 cm, glabrous. |
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. |
basal and cauline; petiole (proximal and proximal to mid cauline), distal bracteate or absent, ovate, margins entire; blade: divisions 1-veined, oblong-lanceolate to ovate in outline, 3–68 mm, slightly thickened, base (at proximalmost division) truncate, margins (of divisions) entire, bipinnately dissected, ca. 5–12(–15) primary divisions on each side, ultimate division nearly linear, apex obtuse to acute, surfaces glabrous. |
Flowers | herkogamous, 1–22, from proximal to distal nodes. |
plesiogamous, 4–10(–12), on foreshortened distal nodes, usually clustered, chasmogamous, sometimes cleistogamous. |
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. |
yellow, proximal lip sometimes red-splotched, palate ridges yellow, bilaterally symmetric, bilabiate; tube-throat cylindric-funnelform, 4–8 mm, exserted 0–2 mm beyond calyx margin or not; palate ridges densely villous. |
Fruiting pedicels | divergent-arcuate, 10–23 mm, villous-glandular, hairs 0.2–0.8 mm, gland-tipped. |
6–14 mm, glabrous. |
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. |
urceolate to urceolate-campanulate, inflated, sagittally compressed, 8–11 mm, glabrous, throat closing. |
Capsules | included, 4–7 mm. |
included, 3–8 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
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Erythranthe arenaria |
Erythranthe filicifolia |
|
Phenology | Flowering May–Sep. | Flowering Apr–Jun(–Sep). |
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. | Slow-draining, ephemeral seeps on exfoliating granite slabs, over basalt. |
Elevation | (100–)500–2600(–2800) m. ((300–)1600–8500(–9200) ft.) | 300–1600 m. (1000–5200 ft.) |
Distribution |
CA
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CA |
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 filicifolia is known only from localities in Butte and Plumas counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 403. | FNA vol. 17, p. 418. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus arenarius, M. floribundus var. subulatus, M. multiflorus, M. subulatus, M. trisulcatus | Mimulus filicifolius |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) | (Sexton: K. G. Ferris & Schoenig) G. L. Nesom, Phytoneuron 2013-80: 1. (2013) |
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