Erythranthe linearifolia |
Erythranthe ampliata |
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primrose monkeyflower, threadleaf primrose monkeyflower |
Nez Perce monkey-flower |
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Habit | Perennials, rhizomatous, densely cespitose, forming large patches and turfs 0.3–1 m diam. | Annuals, fibrous-rooted or filiform-taprooted. |
Stems | erect to ascending, simple, 2–10 cm, sparsely hirsute and stipitate-glandular, internodes shortened. |
erect to ascending, straight or geniculate at nodes, usually many-branched, 4-angled, 5–17 cm, sparsely sessile- to subsessile-glandular, hairs 0.05–0.2 mm, gland-tipped. |
Leaves | basal or near basal, sometimes proximal cauline, subrosulate; petiole 0 mm; blade 1-veined or palmately 3-veined, linear to narrowly oblanceolate, 15–50 × 1.5–5 mm, base long-cuneate, often subclasping, margins entire, dentate-serrate, or distally dentate, apex acute, surfaces glabrous or adaxial sparsely short-pilose, eglandular. |
cauline, basal not persistent; petiole 8–20 mm; blade palmately veined, broadly ovate to lanceolate, 8–25 × 5–19 mm, base cuneate, margins dentate to coarsely denticulate, apex acute to obtuse, surfaces sparsely sessile- to subsessile-glandular, hairs 0.05–0.2 mm, gland-tipped. |
Flowers | herkogamous, 1. |
herkogamous, 1–10, from proximal to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, red-spotted or -striped, bilaterally symmetric, weakly bilabiate, loosely hirsute on abaxial side of opening; tube-throat narrowly campanulate, 18–22 mm, exserted beyond calyx margin; lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open. |
deep yellow, sometimes with small white patches, abaxial limb with a few brownish dots, bilaterally symmetric, strongly bilabiate; tube-throat broadly funnelform, 8–12(–14) mm, exserted beyond calyx margin; lobes obovate-oblong, apex rounded to truncate. |
Fruiting pedicels | (40–)65–85(–120) mm, glabrous or sparsely stipitate-glandular near base. |
10–22 mm, sparsely sessile- to subsessile-glandular, hairs 0.05–0.2 mm, gland-tipped. |
Fruiting calyces | winged- or plicate-angled, tubular-campanulate, weakly or not inflated, 9–10(–12) mm, glabrous. |
tubular-campanulate, not or weakly inflated, 6–8 mm, margins distinctly toothed or lobed, minutely, sparsely stipitate-glandular or glabrous, lobes pronounced, erect. |
Capsules | included, 6–7 mm. |
included, 5–6 mm. |
Anthers | included or slightly exserted, margins ciliate, glabrous. |
included, glabrous. |
Erythranthe linearifolia |
Erythranthe ampliata |
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Phenology | Flowering Jul–Sep. | Flowering Jun–Jul. |
Habitat | Wet banks, Darlingtonia seeps and bogs, seepages in serpentine talus. | Basalt outcrops, seepy roadcuts, grassland seeps. |
Elevation | 600–2800 m. (2000–9200 ft.) | 900–1700 m. (3000–5600 ft.) |
Distribution |
CA
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ID; MT |
Discussion | Erythranthe linearifolia is endemic to serpentine substrates in Shasta, Siskiyou, and Trinity counties; typical E. primuloides occurs in the same area but not on serpentine. Erythranthe linearifolia is distinct from E. primuloides especially in its narrow leaves and cespitose habit. A collection from Tulare County appears to be E. linearifolia (Shevock 10597, CAS), but this appears to be far out of range and the voucher should be reexamined; it probably is better identified as an unusual collection of E. primuloides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe ampliata is known from Clearwater, Lewis, and Nez Perce counties in Idaho and six western counties in Montana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 390. | FNA vol. 17, p. 398. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus primuloides var. linearifolius, M. linearifolius, M. primuloides subsp. linearifolius | Mimulus ampliatus |
Name authority | (A. L. Grant) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | (A. L. Grant) G. L. Nesom: Phytoneuron 2012-39: 38. (2012) |
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