Erythranthe caespitosa

(Greene) G. L. Nesom

Phytoneuron 2012-39: 43. 2012.

Common names: Olympic monkeyflower
Endemic
Basionym: Mimulus scouleri var. caespitosus Greene Pittonia 2: 22. 1889
Synonyms: M. caespitosus (Greene) Greene M. tilingii var. caespitosus (Greene) A. L. Grant
Treatment appears in FNA Volume 17. Treatment on page 409. Mentioned on page 374, 408.

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. 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. 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. Styles minutely hirtellous. Anthers included, glabrous. Capsules included, 4–5 mm.


Phenology: Flowering Jul–Sep.
Habitat: Alpine meadows and slopes, stream banks, wet rocks in streams, wet crevices, talus.
Elevation: 1100–2000(–2300) m.

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.

Selected References

None.

Lower Taxa

None.
... more about "Erythranthe caespitosa"
loculicidal +
Guy L. Nesom +  and Naomi S. Fraga +
(Greene) G. L. Nesom +
rosulate +  and subrosulate +
not persistent +
cuneate +
Mimulus scouleri var. caespitosus +
orbicular;narrowly elliptic or ovate +
not leathery +  and semifleshy +
compressed +, inflated +  and tubular +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Olympic monkeyflower +
dark red-spotted;yellow +
compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
B.C. +  and Wash. +
1100–2000(–2300) m. +
hairy +  and glabrous +
nodding;spreading;nodding;spreading;erect +
reduced +
Alpine meadows and slopes, stream banks, wet rocks in streams, wet crevices, talus. +
gland-tipped +
hirtellous;stipitate-glandular +
minute +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
cauline +  and basal +
ascending +  and deflexed-spreading +
3 (?) +  and Not 5 (?) +
mostly triangular;deltate +
reduced +  and longer +
denticulate +, mucronulate +  and entire +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
Flowering Jul–Sep. +
sublyrate +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Phytoneuron +
flattened +  and ellipsoid +
3 +  and 5 +
proximal +  and middle +
decumbent to decumbent-ascending +  and procumbent +
erect;decumbent +
stipitate-glandular +, hirtellous +  and glabrous +
flattish +  and terete +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
M. caespitosus +  and M. tilingii var. caespitosus +
Erythranthe caespitosa +
Erythranthe +
species +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
rooting +  and rhizomatous +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
stipitate-glandular +, hirtellous +, glabrous +  and villous +
compressed +, inflated +, campanulate +  and filiform +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
perennial +  and annual +
herb +  and subshrub +
terrestrial +  and aquatic +
semiaquatic +  and terrestrial +
9 +, 8 +  and 7 +