Erythranthe decora |
Erythranthe regni |
|
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mannered monkeyflower, northwestern monkey -flower, sharp-leaf monkey-flower, showy monkey-flower |
King of Arizona monkeyflower |
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Habit | Perennials, rhizomatous, sometimes producing numerous, long, remotely leafy runners from basal cauline nodes. | Annuals, fibrous-rooted, sometimes rooting at proximal nodes. |
Stems | erect, simple, 20–100 cm, distals densely, minutely hirtellous. |
erect to ascending-erect, branched, sometimes becoming slightly fistulose, 15–45 cm, 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; petiole: proximals 5–25(–30) mm, mid cauline and distals not connate, 0 mm; blade palmately 5–7-veined, proximal sometimes subpinnate, proximals ovate to depressed-orbicular, 15–20(–50) × 15–25(–50) mm, medials and distals broadly depressed-ovate to obtriangular or flabellate, 15–35 mm, largest basal or at mid stem with distal slightly reduced, base attenuate-cuneate, margins shallowly serrate-dentate, sometimes irregularly, to mucronulate or apiculate, teeth (3–)5–7 per side, rarely subentire, apex rounded, surfaces glabrous. |
Flowers | herkogamous, (1 or)2–7(–14), from distal nodes. |
plesiogamous, 6–16, from all nodes or medial to distal, 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, not red-dotted, bilaterally or radially symmetric, bilabiate or regular; tube-throat cylindric-funnelform, 9–12 mm, exserted 3–5 mm beyond calyx margin; limb expanded 1–1.5 mm. |
Fruiting pedicels | 18–35(–40) mm, distals densely, minutely hirtellous, hairs often slightly deflexed. |
15–30 mm, longer than subtending leaves, glabrous. |
Fruiting calyces | green, sometimes red-spotted, ovoid, inflated, sagittally compressed, 15–19 mm, distals densely, minutely hirtellous, throat closing, lobe margins (sinuses) villous. |
sparsely purple-dotted, broadly campanulate-cylindric, inflated, sagittally compressed, 7–9 mm, glabrous, throat not closing, adaxial lobe longest. |
Capsules | included, 8–10 mm. |
included, 4–5 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Erythranthe decora |
Erythranthe regni |
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Phenology | Flowering May–Aug. | Flowering Mar–May. |
Habitat | River banks, streamsides, dripping banks, moist meadows. | Moist to wet, sandy loam soils. |
Elevation | 1000–1600 m. (3300–5200 ft.) | 800–1000 m. (2600–3300 ft.) |
Distribution |
ID; OR; WA; BC
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AZ |
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 regni is endemic to the Kofa Mountains of Yuma County; all collections have been made from the Kofa Game Refuge (Kofa National Wildlife Refuge). Because its calyces remain open at maturity, this species is hypothesized to be most closely related to E. geyeri, from which it differs by its erect habit, apparently annual duration, larger leaves, purple-dotted calyces, and corollas with longer tube-throat and barely bilabiate limb. Geography and other morphology, however, suggest that its evolutionary origins are closer to E. guttata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 414. | FNA vol. 17, p. 406. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus guttatus var. decorus, M. decorus | |
Name authority | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) | G. L. Nesom: Phytoneuron 2012-40: 24. (2012) |
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