Erythranthe purpurea |
Erythranthe percaulis |
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little purple monkeyflower, purple monkeyflower |
serpentine canyon monkeyflower |
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Habit | Annuals, taprooted. | Annuals, fibrous-rooted. |
Stems | erect, simple or branched from basal nodes, 3–10 cm, minutely puberulent. |
erect or slightly ascending from base, often purplish, simple or few-branched from basal nodes, 7–28 cm, glabrous. |
Leaves | 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. |
basal and cauline; petiole: basal and proximalmost cauline 5–10 mm or cauline 0 mm; blade often spreading at right angles to stem, purple, palmately 3–5-veined, narrowly ovate, rhombic-elliptic, ovate to lanceolate, or elliptic-lanceolate to ovate or oblong-ovate, 7–10 mm, cauline even-sized or slightly smaller distally, 4–10 mm, base truncate to attenuate, margins entire or proximals shallowly sinuate, serrations 2–4, shallow, apex rounded, surfaces glabrous. |
Flowers | herkogamous, 1–22, from distal or medial to distal nodes. |
herkogamous, 8–12, usually on distal 2/3 of stem, not clustered, chasmogamous. |
Styles | glabrous. |
glabrous. |
Corollas | 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. |
yellow, throat floor with a few red dots, proximal middle lip base with a larger red splotch, bilaterally symmetric, bilabiate; tube-throat cylindric-funnelform, 4–6 mm, exserted 2–3 mm beyond calyx margin; limb expanded 4–5 mm, palate ridges yellow, densely hairy. |
Fruiting pedicels | ascending to often spreading horizontally, 13–57(–70) mm. |
15–35 mm, glabrous. |
Fruiting calyces | becoming reddish, campanulate, 3–8 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. |
sharply wing-angled, urceolate to urceolate-campanulate, inflated, sagittally compressed, (4–)5–6 mm, glabrous, throat closing. |
Capsules | included, 3–8 mm. |
included, 3 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Erythranthe purpurea |
Erythranthe percaulis |
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Phenology | Flowering May–Jun. | Flowering May–Jun. |
Habitat | Moist openings along streams, swales, and depressions, pine duff in yellow pine forests, margins of dry meadows. | Soil pockets, crevices, and boulders on serpentine cliffs, slopes, and roadcuts. |
Elevation | 1900–2800 m. (6200–9200 ft.) | 2800 m. (9200 ft.) |
Distribution |
CA; Mexico (Baja California)
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CA |
Discussion | 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.) |
Erythranthe percaulis was described from only the type collection from Serpentine Canyon of the Feather River in Plumas County, but the type locality has recently been relocated and the population determined to comprise many thousands of individuals (S. Schoenig 2016). Plants are characterized by their completely glabrous vestiture, terete and mostly simple stems, small leaves on relatively widely spaced nodes, small calyces, and small, yellow corollas with herkogamous arrangement of stigma and anthers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 388. | FNA vol. 17, p. 418. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus purpureus, M. purpureus var. pauxillus | |
Name authority | (A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | G. L. Nesom: Phytoneuron 2013-70: 1, figs. 1–5. (2013) |
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