Erythranthe caespitosa |
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large mountain monkey-flower, mountain monkeyflower, Olympic monkeyflower, subalpine monkeyflower |
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Habit | Perennials, rhizomatous, rooting at proximal nodes, sometimes producing creeping, small-leaved runners, forming matted colonies, rhizomes filiform. |
Stems | procumbent or decumbent to decumbent-ascending, delicate, usually in masses, terete or flattish, branched, 3–10 cm, glabrous, minutely hirtellous, or stipitate-glandular. |
Leaves | basal and cauline; petiole: proximals 2–5 mm, distals 0 mm; blade often purple beneath, palmately 3-veined, orbicular to narrowly elliptic or ovate, proximals usually sublyrate, 3–12 mm, becoming larger distally, base cuneate to a short petiole, margins entire, mucronulate, or barely denticulate, apex obtuse, surfaces sparsely to moderately puberulent, hairs minute, stipitate-glandular. |
Flowers | herkogamous, 1–3, from distal nodes, commonly solitary. |
Styles | minutely hirtellous. |
Corollas | yellow, dark red-spotted, bilaterally symmetric, bilabiate; tube-throat broadly funnelform to cylindric-funnelform, 15–18 mm, exserted beyond calyx margin; abaxial limb with deflexed-spreading lobes, adaxial with ascending lobes, palate partially closed. |
Fruiting pedicels | 10–30(–40) mm, sparsely to moderately villous, hairs short, gland-tipped, sometimes hirtellous. |
Fruiting calyces | broadly campanulate, inflated, sagittally compressed, 7–15 mm, glabrous, minutely hirtellous, or stipitate-glandular, throat closing, proximalmost lobe pair upcurving, distalmost 3–5 mm, prominently protruding. |
Capsules | included, 4–5 mm. |
Anthers | included, glabrous. |
Erythranthe caespitosa |
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Phenology | Flowering Jul–Sep. |
Habitat | Alpine meadows and slopes, stream banks, wet rocks in streams, wet crevices, talus. |
Elevation | 1100–2000(–2300) m. (3600–6600(–7500) ft.) |
Distribution |
WA; BC
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Discussion | Erythranthe caespitosa is endemic to northwestern and central Washington (Cascade and Olympic mountains) and adjacent British Columbia (Cascades, Selkirk Mountains and Chilliwack Valley, Coast Mountains). The plants have consistently small leaves with subentire margins, and the stems are consistently procumbent to decumbent-ascending, usually forming matted colonies. Erythranthe caespitosa and E. tilingii appear to be sympatric in counties of northwestern Washington, but this needs to be verified in the field. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 409. |
Parent taxa | Phrymaceae > Erythranthe |
Sibling taxa | |
Synonyms | Mimulus scouleri var. caespitosus, M. caespitosus, M. tilingii var. caespitosus |
Name authority | (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
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