Erythranthe filicaulis |
Erythranthe hallii |
|
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Hetch Hetchy monkey-flower, slender-stem monkeyflower |
Hall's monkeyflower |
|
Habit | Annuals, taprooted. | Annuals, fibrous-rooted, sometimes apparently rooting at proximal nodes if stems proximally decumbent. |
Stems | erect, simple or branched at basal nodes, 4–30 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
erect, simple, 4-angled, 2–8 cm, slender, glabrous. |
Leaves | cauline, basal usually not persistent; petiole 0 mm; blade 1-veined or palmately 3-veined, linear to oblanceolate, 6–15 × (1–)2–3 mm, base attenuate, margins entire to remotely mucronulate, teeth 1–3 per side, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
basal and cauline or basal deciduous, largest at mid stem or above, cauline relatively few on long internodes; petiole: basal and proximals to midcauline 1–4 mm, distals 0 mm; blade palmately 3-veined, ovate to ovate-lanceolate, 5–11 × 3–9 mm, base truncate to cuneate, margins very shallowly dentate or denticulate, apex acute to obtuse, surfaces glabrous or distals and bracteals sparsely villous, hairs vitreous, flattened, eglandular, multicellular. |
Flowers | herkogamous, 2–8, from medial to distal nodes. |
plesiogamous, (1–)4–10, sometimes from all nodes, usually beginning about mid stem, cleistogamous. |
Styles | glabrous. |
glabrous. |
Corollas | pink to purple, throat dark red-purple, palate ridges yellow, bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular; tube-throat cylindric-funnelform, 8–12(–17) mm, exserted beyond calyx margin; limb expanded 10–14 mm, lobes notched, palate villous. |
yellow, usually red-dotted, bilaterally or nearly radially symmetric, bilabiate or nearly regular; tube-throat narrowly cylindric, 4–6 mm, exserted 0.5–1 mm beyond calyx margin; limb barely expanded. |
Fruiting pedicels | 9–30 mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped. |
usually deflexed 90º at calyx, 6–14 mm, longer than subtending leaves. |
Fruiting calyces | reddish brown-spotted, strongly angled, cylindric-campanulate, 7–9 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading. |
sometimes red-dotted, broadly elliptic-ovoid, inflated, sagittally compressed, (5–)7–10 mm, glabrous, throat closing, adaxial lobe not distinctly longer than abaxial, not falcate. |
Capsules | included, 5–7 mm. |
included, 4–6 mm. |
Anthers | included, hirtellous. |
included, glabrous. |
2n | = 16. |
= 32. |
Erythranthe filicaulis |
Erythranthe hallii |
|
Phenology | Flowering May–Jul. | Flowering May–Aug. |
Habitat | Moist open areas on gentle slopes, meadows, roadsides, gravelly soils. | Ledges, seeps, along streams, wet meadows. |
Elevation | 800–1800 m. (2600–5900 ft.) | 1900–3200 m. (6200–10500 ft.) |
Distribution |
CA
|
CO |
Discussion | Erythranthe filicaulis is known only for certain from Mariposa and Tuolumne counties. Kappler 1691 (UCLA) from Madera County also may be this species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe hallii is known from Boulder, Clear Creek, Fremont, Grand, Jefferson, Larimer, Routt, and Saguache counties. The Colorado population system is morphologically and geographically coherent. Erythranthe hallii is similar to E. arvensis; both have four-angled stems, autogamous reproduction, a tendency to root at basal nodes and distally, and both have bracteal leaves villous with vitreous, flattened, eglandular, multicellular hairs, although this vestiture is barely developed and often absent in E. hallii. The only reported chromosome number from the Colorado plants (2n = 32) also appears to be distinct among possible relatives of E. hallii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 391. | FNA vol. 17, p. 423. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus filicaulis, M. biolettii | Mimulus hallii, M. guttatus var. hallii |
Name authority | (S. Watson) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
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