Erythranthe arenaria |
Erythranthe suksdorfii |
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sand-loving monkeyflower |
miniature monkey-flower, sukdorf's monkeyflower, Suksdorf's monkey-flower |
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Habit | Annuals, fibrous-rooted or filiform-taprooted. | Annuals, taprooted, densely compact. |
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 many-branched from basal nodes, 0.5–10(–13) cm, minutely puberulent, internodes shortened, not evident. |
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 or ovate, 2–20(–25) × 0.5–4 mm, base attenuate, margins entire, apex acute to obtuse, surfaces minutely puberulent. |
Flowers | herkogamous, 1–22, from proximal to distal nodes. |
herkogamous or plesiogamous, 1–72, 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. |
yellow, throat sometimes with red markings, abaxial limb sometimes with a red dot, bilaterally symmetric, weakly bilabiate; tube-throat cylindric, indistinct from throat, 4–6 mm, exserted beyond calyx margin; limb expanded 2–3 mm, lobes entire or weakly notched, palate glabrous or sparsely bearded. |
Fruiting pedicels | divergent-arcuate, 10–23 mm, villous-glandular, hairs 0.2–0.8 mm, gland-tipped. |
2–10 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. |
cylindric to urn-shaped, 3–6 mm, margins distinctly toothed or lobed, glabrous or minutely puberulent, ribs thickened, lobes pronounced, erect. |
Capsules | included, 4–7 mm. |
included, 3–6 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
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Erythranthe arenaria |
Erythranthe suksdorfii |
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Phenology | Flowering May–Sep. | Flowering Apr–Aug. |
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. | Moist, generally loamy to clay soils in open areas. |
Elevation | (100–)500–2600(–2800) m. ((300–)1600–8500(–9200) ft.) | 700–4200 m. (2300–13800 ft.) |
Distribution |
CA
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AZ; CA; ID; MT; NM; NV; OR; UT; WA; WY; BC
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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.) |
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Source | FNA vol. 17, p. 403. | FNA vol. 17, p. 384. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus arenarius, M. floribundus var. subulatus, M. multiflorus, M. subulatus, M. trisulcatus | Mimulus suksdorfii |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) | (A. Gray) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) |
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