Erythranthe arenaria |
Erythranthe purpurea |
|
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sand-loving monkeyflower |
little purple monkeyflower, purple monkeyflower |
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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 from basal nodes, 3–10 cm, minutely 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 palmately 3–5-veined, elliptic to lanceolate, 4–15 × 1–5 mm, base truncate to truncate-cordate, clasping, margins entire, sometimes toothed, apex acute to obtuse, surfaces minutely puberulent. |
Flowers | herkogamous, 1–22, from proximal to distal nodes. |
herkogamous, 1–22, 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 purple, adaxial limb darker than abaxial, abaxial limb with yellow markings, bilaterally symmetric, strongly bilabiate; tube-throat cylindric to funnelform, 7–13 mm, exserted beyond calyx margin; limb expanded 7–10 mm, bilabiate, 3 abaxial lobes notched, 2 adaxial nearly entire, abaxial limb sparsely bearded. |
Fruiting pedicels | divergent-arcuate, 10–23 mm, villous-glandular, hairs 0.2–0.8 mm, gland-tipped. |
ascending to often spreading horizontally, 13–57(–70) 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 reddish, campanulate, 3–8 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. |
Capsules | included, 4–7 mm. |
included, 3–8 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
|
Erythranthe arenaria |
Erythranthe purpurea |
|
Phenology | Flowering May–Sep. | Flowering May–Jun. |
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 openings along streams, swales, and depressions, pine duff in yellow pine forests, margins of dry meadows. |
Elevation | (100–)500–2600(–2800) m. ((300–)1600–8500(–9200) ft.) | 1900–2800 m. (6200–9200 ft.) |
Distribution |
CA
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CA; Mexico (Baja California)
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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.) |
Erythranthe purpurea is restricted to the San Bernardino Mountains in San Bernardino County and is disjunct in the Sierra San Pedro Mártir in Baja California, Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 403. | FNA vol. 17, p. 388. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus arenarius, M. floribundus var. subulatus, M. multiflorus, M. subulatus, M. trisulcatus | Mimulus purpureus, M. purpureus var. pauxillus |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) | (A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) |
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