Pseudoleskea stenophylla

Renauld & Cardot

Bot. Centra l bl. 44: 421. 1890.

Illustrated
Synonyms: Lescuraea stenophylla (Renauld & Cardot) Kindberg
Treatment appears in FNA Volume 28. Treatment on page 361. Mentioned on page 356.

Plants small, in thin open to thick mats, green or yellow-green. Stems with branches slender, not or rarely julaceous, apices straight to rarely curving up; central strand present; paraphyllia many, filamentous to foliose, not branched. Leaves appressed to somewhat erect when dry, erect-spreading when moist, glossy, ovate-lanceolate to lanceolate, symmetric, not or rarely falcate except at apices, 0.9–2 mm; margins recurved to just before acumen; apex gradually and slenderly long-acuminate, hair-point absent; costa percurrent, green to yellow-green, not sinuate; alar cells transversely elongate to quadrate, region small; medial laminal cells elongate-rhomboidal to fusiform or somewhat vermicular, to 30 µm, 2–3(–4):1, pellucid, strongly papillose over lumen, papillae usually off-centered to distal edge, rarely some cells prorate, walls firm to incrassate, not pitted; juxtacostal cells somewhat shorter than more distal cells, walls not pitted. Capsule erect, symmetric, 1–3 mm; endostome basal membrane 1/4 exostome length, segments shorter than exostome, cilia absent or rudimentary. Spores 16–20 µm.


Phenology: Capsules mature spring–summer (May–Aug).
Habitat: Twigs and branches of shrubs or small trees, tree bases of Acer or Alnus, along streams
Elevation: moderate to high elevations (500-2100 m)

Distribution

V28 566-distribution-map.gif

Alta., B.C., Nfld. and Labr., N.S., Que., Alaska, Calif., Idaho, Mont., Oreg., Utah, Wash., w Eurasia.

Discussion

Pseudoleskea stenophylla is distinguished by small plants growing on bark and twigs of shrubs and trees, leaves with a long, slender acumen half the leaf length, and elongate laminal cells with papillae over the lumen but usually off-centered.

Selected References

None.

Lower Taxa

None.
... more about "Pseudoleskea stenophylla"
John R. Spence +
Renauld & Cardot +
Alta. +, B.C. +, Nfld. and Labr. +, N.S. +, Que. +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +, Utah +, Wash. +  and w Eurasia. +
moderate to high elevations (500-2100 m) +
Twigs and branches of shrubs or small trees, tree bases of Acer or Alnus, along streams +
Capsules mature spring–summer (May–Aug). +
Bot. Centra l bl. +
Illustrated +
Lescuraea stenophylla +
Pseudoleskea stenophylla +
Pseudoleskea +
species +