Erythranthe linearifolia

(A. L. Grant) G. L. Nesom & N. S. Fraga

Phytoneuron 2012-39: 35. 2012.

Common names: Threadleaf primrose monkeyflower
IllustratedEndemic
Basionym: Mimulus primuloides var. linearifolius A. L. Grant Ann. Missouri Bot. Gard. 11: 246. 1925
Synonyms: M. linearifolius (A. L. Grant) Pennell M. primuloides subsp. linearifolius (A. L. Grant) Munz
Treatment appears in FNA Volume 17. Treatment on page 390. Mentioned on page 372, 378, 383, 389.

Perennials, rhizomatous, densely cespitose, forming large patches and turfs 0.3–1 m diam. Stems erect to ascending, simple, 2–10 cm, sparsely hirsute and stipitate-glandular, internodes shortened. 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. Flowers herkogamous, 1. Fruiting pedicels (40–) 65–85 (–120) mm, glabrous or sparsely stipitate-glandular near base. Fruiting calyces winged or plicate-angled, tubular-campanulate, weakly or not inflated, 9–10 (–12) mm, 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. Styles glabrous. Anthers included or slightly exserted, margins ciliate, glabrous. Capsules included, 6–7 mm.


Phenology: Flowering Jul–Sep.
Habitat: Wet banks, Darlingtonia seeps and bogs, seepages in serpentine talus.
Elevation: 600–2800 m.

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.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Erythranthe linearifolia"
exserted +  and included +
loculicidal +
Guy L. Nesom +  and Naomi S. Fraga +
(A. L. Grant) G. L. Nesom & N. S. Fraga +
rosulate +  and subrosulate +
not persistent +
subclasping +
stipitate-glandular +  and glabrous +
long-cuneate +
6.5 cm65 mm <br />0.065 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
Mimulus primuloides var. linearifolius +
3-veined +  and 1-veined +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
linear;narrowly oblanceolate +
? (?) +  and ? (?) +
1.5mm;5mm +
compressed +, inflated +  and tubular +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Threadleaf primrose monkeyflower +
striped;red-spotted;yellow +
600–2800 m. +
hairy +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
nodding;spreading;nodding;spreading;erect +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reduced +
Wet banks, Darlingtonia seeps and bogs, seepages in serpentine talus. +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
near basal stems +  and basal +
? (?) +  and ? (?) +
obovate-oblong +
reduced +  and longer +
dentate +, dentate-serrate +  and entire +
subentire +  and toothed +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
0 cm0 mm <br />0 m <br /> (?) +
Flowering Jul–Sep. +
Phytoneuron +
flattened +  and ellipsoid +
3 +  and 5 +
Illustrated +  and Endemic +
proximal +  and middle +
erect;ascending +
4-angled +  and terete +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
M. linearifolius +  and M. primuloides subsp. linearifolius +
Erythranthe linearifolia +
Erythranthe +
species +
1.8 cm18 mm <br />0.018 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
perennial +  and annual +
herb +  and subshrub +
terrestrial +  and aquatic +
semiaquatic +  and terrestrial +
9 +, 8 +  and 7 +