Erythranthe patula |
Erythranthe inflatula |
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stalk-leaf monkey-flower |
disappearing monkey-flower, ephemeral monkeyflower |
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Habit | Annuals, fibrous-rooted or filiform-taprooted. | Annuals, fibrous-rooted or filiform-taprooted. |
Stems | erect to ascending, straight or geniculate at nodes, usually simple, (3–)5–15(–24) cm, stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
erect to ascending, straight or geniculate at nodes, simple or branched at proximal and medial nodes, 6–20(–25) cm, minutely stipitate-glandular, hairs 0.1–0.3 mm, gland-tipped. |
Leaves | cauline, basal not persistent; petiole (5–)8–25 mm; blade palmately 3-veined, deltate or ovate to ovate-lanceolate, 4–12(–17) × 3–10(–14) mm, base rounded to cuneate-truncate, margins usually denticulate, apex acute to obtuse, surfaces stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
usually cauline, basal usually deciduous by flowering; petiole: proximals 1–3 mm, distals 0 mm; blade palmately 3–5-veined, narrowly ovate or narrowly lanceolate to elliptic or elliptic-lanceolate, largest 8–18(–30) × (1–)3–7 mm, relatively even-sized, or slightly reduced distally, base attenuate to obtuse or rounded, margins entire, mucronulate, or denticulate, apex acute to obtuse, surfaces minutely stipitate-glandular, hairs 0.1–0.3 mm, gland-tipped. |
Flowers | herkogamous, 1–10, from proximal to distal nodes. |
plesiogamous, 10–20, from medial to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, abaxial limb usually with a few red or brownish dots, radially or bilaterally symmetric, regular or weakly bilabiate; tube-throat funnelform, 7–8 mm, exserted beyond calyx margin; lobes oblong, apex rounded to truncate. |
yellow to pale yellow, sparsely red-spotted or not, bilaterally symmetric, weakly bilabiate; tube-throat cylindric, 5–8 mm, exserted 1–3 mm beyond calyx margin; limb barely widened, lobes broadly obovate, apex rounded or mucronate. |
Fruiting pedicels | 10–25(–38) mm, stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
straight, 7–18 mm, minutely stipitate-glandular, hairs 0.1–0.3 mm, gland-tipped. |
Fruiting calyces | tubular, weakly or not inflated, 5–6(–7) mm, margins distinctly toothed or lobed, sparsely stipitate-glandular to sparsely hirtellous, lobes pronounced, erect. |
winged, plicate-angled, maturing ovoid-ellipsoid to campanulate or broadly urceolate, distinctly inflated, 7–11 mm, margins distinctly toothed or lobed, sparsely, minutely hirtellous, eglandular, lobes pronounced, erect. |
Capsules | included, 4–6 mm. |
included, 5–9 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
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Erythranthe patula |
Erythranthe inflatula |
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Phenology | Flowering Apr–May(–Aug). | Flowering Jun–Jul. |
Habitat | Ephemeral seeps, springs, rocky stream banks, moist basalt, fine gravel on bedrock, muddy hillside seeps, crevices. | Drying edges, banks, and beds of summer-dry watercourses, near drying edges of small lakes or impoundments, often among rocks and shoreline detritus, occasionally in moist protected areas beneath low shrubs. |
Elevation | 200–1900(–2900) m. (700–6200(–9500) ft.) | 1200–1700 m. (3900–5600 ft.) |
Distribution |
ID; MT; OR; WA; WY; AB; BC
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CA; ID; NV; OR |
Discussion | Erythranthe patula is distinctive with its long-petiolate leaves with ovate blades and its small, weakly bilabiate to nearly radially symmetric corollas. Vestiture may include only minute, stipitate-glandular hairs or it may be an intergrading mix of stipitate-glandular hairs and minute (0.1–0.2 mm), sharp-pointed, eglandular hairs. Plants may have stipitate-glandular pedicels and calyces but hirtellous, eglandular stems, or they may have stipitate-glandular stems and pedicels but hirtellous calyces. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
No natural occurrences of Erythranthe inflatula are known from Washington; the type collection from Klickitat County is from a cultivated plant. Morphological and molecular data (R. J. Meinke 1995; P. M. Beardsley et al. 2004) indicate that Erythranthe inflatula originated as a hybrid between E. breviflora and E. latidens. Its geography and biology suggest that it is reproductively stable. The putative parents are geographically and ecologically separated for most of their ranges, and the range of E. inflatula is considerably broader than the relatively small region where the parents are sympatric. In the region of sympatry, however, E. inflatula may be difficult to distinguish from one or both of its putative parents. G. L. Nesom (2012g) was not able to find morphology that would distinguish the recently described Mimulus evanescens from E. inflatula. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 397. | FNA vol. 17, p. 400. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus patulus | Mimulus inflatulus, M. evanescens |
Name authority | (Pennell) G. L. Nesom: Phytoneuron 2012-39: 39. (2012) | (Suksdorf) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) |
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