Erythranthe latidens |
Erythranthe regni |
|
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broad-tooth monkeyflower |
King of Arizona monkeyflower |
|
Habit | Annuals, fibrous-rooted or filiform-taprooted. | Annuals, fibrous-rooted, sometimes rooting at proximal nodes. |
Stems | ascending to ascending-erect, geniculate at nodes, usually many-branched from base, 3–10(–25) cm, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
erect to ascending-erect, branched, sometimes becoming slightly fistulose, 15–45 cm, glabrous. |
Leaves | basal and cauline, largest at base or near mid stem, sometimes unreduced in size up to distalmost nodes; petiole 0 mm; cauline blade palmately 3(–5)-veined, ovate to ovate-lanceolate, 8–26(–35) mm, base abruptly cuneate to rounded, sometimes subauriculate, margins entire or barely mucronulate to shallowly dentate-mucronulate, teeth or mucronulae 1–3 per side, apex acute to rounded, surfaces short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
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 | plesiogamous, (1–)3–12, from medial to distal nodes. |
plesiogamous, 6–16, from all nodes or medial to distal, cleistogamous. |
Styles | glabrous. |
glabrous. |
Corollas | white to pinkish or flesh colored, rarely yellowish, throat and abaxial lobes red-spotted, nearly radially symmetric; tube-throat cylindric, 5–6(–8) mm, exserted beyond calyx margin; limb barely widened, lobes broadly obovate, apex rounded. |
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 | straight, 11–28 mm, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped. |
15–30 mm, longer than subtending leaves, glabrous. |
Fruiting calyces | purplish, prominently 5-angled, tubular-campanulate or ovoid-ellipsoid, strongly inflated, 8–12 mm, margins distinctly toothed or lobed, short stipitate-glandular or sessile-glandular, hairs 0.1–0.3 mm, gland-tipped, lobes pronounced, erect. |
sparsely purple-dotted, broadly campanulate-cylindric, inflated, sagittally compressed, 7–9 mm, glabrous, throat not closing, adaxial lobe longest. |
Capsules | included, 6–7 mm. |
included, 4–5 mm. |
Anthers | included, glabrous. |
included, glabrous. |
Erythranthe latidens |
Erythranthe regni |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–May. |
Habitat | Drained flats or slopes subject to vernal inundation, depressions in open fields, bare clay soils, vacant lots, roadsides. | Moist to wet, sandy loam soils. |
Elevation | 10–800 m. (0–2600 ft.) | 800–1000 m. (2600–3300 ft.) |
Distribution |
CA; OR; Mexico (Baja California)
|
AZ |
Discussion | The distinction between Erythranthe latidens and E. inflatula sometimes seems arbitrary, perhaps because of gene exchange where they are sympatric in northwestern California. Erythranthe latidens in Oregon is known only from southern Harney County. (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. 400. | FNA vol. 17, p. 406. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus inconspicuus var. latidens, M. latidens | |
Name authority | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) | G. L. Nesom: Phytoneuron 2012-40: 24. (2012) |
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