Erythranthe decora |
Erythranthe hallii |
|
---|---|---|
mannered monkeyflower, northwestern monkey -flower, sharp-leaf monkey-flower, showy monkey-flower |
Hall's monkeyflower |
|
Habit | Perennials, rhizomatous, sometimes producing numerous, long, remotely leafy runners from basal cauline nodes. | Annuals, fibrous-rooted, sometimes apparently rooting at proximal nodes if stems proximally decumbent. |
Stems | erect, simple, 20–100 cm, distals densely, minutely hirtellous. |
erect, simple, 4-angled, 2–8 cm, slender, glabrous. |
Leaves | cauline, basal usually not persistent; petiole: proximals 8–25 mm, midcauline 3–5 mm, distalmost 0 mm; blade palmately (3–)5–7-veined, broadly ovate-triangular to ovate-lanceolate, 20–50(–60) × 10–30(–40) mm, usually 1–2 times longer than wide, base rounded to truncate to shallowly cuneate, margins dentate, teeth sharp-pointed, apex acute, surfaces sometimes glabrate, distals densely, minutely hirtellous. |
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, (1 or)2–7(–14), from distal nodes. |
plesiogamous, (1–)4–10, sometimes from all nodes, usually beginning about mid stem, cleistogamous. |
Styles | minutely, prominently hirsutulous to villosulous. |
glabrous. |
Corollas | yellow to chrome yellow, throat floor and tube usually red-spotted, bilaterally symmetric, bilabiate; tube-throat broadly funnelform, 18–26 mm, exserted (8–)10–15 mm beyond calyx margin; limb expanded 22–30 mm. |
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 | 18–35(–40) mm, distals densely, minutely hirtellous, hairs often slightly deflexed. |
usually deflexed 90º at calyx, 6–14 mm, longer than subtending leaves. |
Fruiting calyces | green, sometimes red-spotted, ovoid, inflated, sagittally compressed, 15–19 mm, distals densely, minutely hirtellous, throat closing, lobe margins (sinuses) villous. |
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, 8–10 mm. |
included, 4–6 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
|
Erythranthe decora |
Erythranthe hallii |
|
Phenology | Flowering May–Aug. | Flowering May–Aug. |
Habitat | River banks, streamsides, dripping banks, moist meadows. | Ledges, seeps, along streams, wet meadows. |
Elevation | 1000–1600 m. (3300–5200 ft.) | 1900–3200 m. (6200–10500 ft.) |
Distribution |
ID; OR; WA; BC
|
CO |
Discussion | Erythranthe decora is distinct in its uniformly ovate to ovate-lanceolate leaf blades with truncate bases and regularly toothed margins, relatively long internodes, rhizomatous habit, mostly unbranched stems, often with leafy runners from basal nodes, large corollas, hairy styles, and minutely hirtellous stems, pedicels, calyces, and leaf surfaces. The densely produced rhizomes suggest a relationship with the E. tilingii group. A population in Clearwater County, Idaho, appears to be long-disjunct from the main range of the species in northwestern Oregon and the western half of Washington. (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. 414. | FNA vol. 17, p. 423. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus guttatus var. decorus, M. decorus | Mimulus hallii, M. guttatus var. hallii |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
Web links |
|