Erythranthe alsinoides |
Erythranthe parvula |
|
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chickweed monkey-flower, wing-stem monkey-flower |
Southwestern mat monkeyflower |
|
Habit | Annuals, fibrous-rooted. | Perennials, rhizomatous, sometimes rooting at nodes, mat-forming. |
Stems | erect, usually simple, (0.5–)2–6(–15) cm, glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped, nodes 2(or 3), usually red-tinged. |
procumbent, branched, 5–15 cm, stipitate-glandular distally. |
Leaves | basal and cauline; petiole 1–20(–30) mm, distinctly 3-veined (winged); blade palmately 3-veined, lanceolate-ovate to ovate, elliptic, or suborbicular, 3–18(–32) × 3–12(–25) mm, base cuneate to truncate, margins dentate to denticulate or subentire, apex acute to obtuse or rounded, surfaces glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped. |
cauline; petiole 1–4 mm; blade palmately 3-veined, ovate to orbicular-ovate or depressed-ovate, 3–11 × 3–9 mm, base truncate to cuneate, margins shallowly denticulate to dentate, teeth 3–5 per side, apex acute to obtuse, surfaces villous-hirsute, hairs whitish, thickened, flattened, stiff, gland-tipped. |
Flowers | herkogamous, 1–4(–8), from distal or medial to distal nodes. |
plesiogamous, 2–8, axillary at distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, abaxial limb with a large maroon splotch, also red-spotted, bilaterally symmetric, ± bilabiate; tube-throat funnelform-cylindric, 6–9 mm, exserted beyond calyx margin; throat open, palate villous, abaxial ridges low. |
yellow, red-dotted, bilaterally symmetric, bilabiate; tube-throat funnelform, 6–8 mm, exserted beyond calyx margin; limb expanded 4–6 mm, abaxial limb spreading, lobes fimbriate. |
Fruiting pedicels | 15–32 mm, glandular-puberulent, hairs 0.1–0.2 mm, gland-tipped. |
7–15 mm, minutely stipitate-glandular. |
Fruiting calyces | purplish, slightly ridge-angled, campanulate-cylindric, weakly or not inflated, 5–8 mm, margins subtruncate, sparsely minutely stipitate-glandular, lobes 4, (0–)0.5–1 mm, sometimes barely evident, 1 lobe usually slightly longer, margins appearing subtruncate, shallowly convex to rounded-mucronulate. |
nodding 45–90º, 5-lobed, cylindric-ovoid, inflated, sagittally compressed, 4–5 mm, villous-hirsute, throat closing. |
Capsules | included, (3–)5–7 mm. |
included, 3–4 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
|
Erythranthe alsinoides |
Erythranthe parvula |
|
Phenology | Flowering Mar–Jun. | Flowering Apr–Sep. |
Habitat | Open, rocky slopes, cliff faces, bluffs, mossy rock crevices, ledges, moist rocks, roadsides, along wet paths and trails. | Wet vertical rock faces, ledges, and rocky slopes, seepy wash banks. |
Elevation | 10–1900 m. (0–6200 ft.) | 500–2400(–3400) m. (1600–7900(–11200) ft.) |
Distribution |
CA; ID; OR; WA; BC
|
AZ; NM; Mexico (Sonora) |
Discussion | Erythranthe alsinoides is distinct in its short, erect stems with few nodes, small, mostly ovate to elliptic-ovate, petiolate leaves, minutely stipitate-glandular vestiture, small corollas with a prominent maroon splotch on the abaxial limb, small, non-inflated mature calyces and, most especially, by its nearly truncate calyx margin. Erythranthe pulsiferae is superficially similar to E. alsinoides but has larger calyces borne on divergent-arcuate pedicels, smaller leaf blades with attenuate to cuneate bases, and the corolla limbs are smaller and lack a prominent maroon splotch. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
All monkeyflowers with laciniate-lobed corollas have generally been identified as Mimulus dentilobus B. L. Robinson & Fernald, but these occur as three, morphologically distinct, widely allopatric population systems, each of which is regarded as a separate species (G. L. Nesom 2012g). Erythranthe dentiloba (B. L. Robinson & Fernald) G. L. Nesom, which is endemic to Mexico, is the only one of the three with an allogamous breeding system. Erythranthe parvula is restricted to Arizona and New Mexico except for one locality in northern Sonora, Mexico. Erythranthe chinatiensis is the third species of the group. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 395. | FNA vol. 17, p. 424. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus alsinoides | Mimulus parvulus |
Name authority | (Douglas ex Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 37. (2012) | (Wooton & Standley) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) |
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