Pylaisiadelpha tenuirostris

(Bruch & Schimper ex Sullivant) W. R. Buck

Yushania 1(2): 13. 1984.

Basionym: Leskea tenuirostris Bruch & Schimper ex Sullivant in A. Gray, Manual, 668. 1848
Synonyms: Brotherella tenuirostris (Bruch & Schimper ex Sullivant) M. Fleischer
Treatment appears in FNA Volume 28. Treatment on page 581.

Stems red-brown, reclining, slender, branches prostrate or sometimes arching upward; pseudoparaphyllia narrow, foliose. Stem leaves crowded, 0.7–1 mm. Branch leaves similar, slightly smaller. Specialized asexual reproduction by filiform propagula in leaf axils. Seta reddish. Capsule symmetric, 1 mm.

Phenology: Capsules mature early spring.
Habitat: Rock, epiphytic on tree trunks and bases, logs, broadleaf woodlands
Elevation: low to moderate elevations


V28 911-distribution-map.gif

Nfld. and Labr., N.S., Ont., Ala., Ark., Conn., Ga., Ill., Ind., Maine, Md., Mich., Mo., N.Y., N.C., Ohio, Okla., S.C., Tenn., Vt., Va., W.Va., Wis., Mexico, Central America, Asia.


Pylaisiadelpha tenuirostris is superficially similar to some specimens of Hypnum pallescens (Hypnaceae), a commonly sporophyte-bearing species with conic opercula and leaves lacking enlarged alar cells. Plants with sporophytes are rare. The rostrate opercula and conspicuous pigmented enlarged alar cells are distinctive.

Selected References


Lower Taxa

Wilfred B. Schofield† +
(Bruch & Schimper ex Sullivant) W. R. Buck +
Leskea tenuirostris +
Nfld. and Labr. +, N.S. +, Ont. +, Ala. +, Ark. +, Conn. +, Ga. +, Ill. +, Ind. +, Maine +, Md. +, Mich. +, Mo. +, N.Y. +, N.C. +, Ohio +, Okla. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +, Wis. +, Mexico +, Central America +  and Asia. +
low to moderate elevations +
Rock, epiphytic on tree trunks and bases, logs, broadleaf woodlands +
Capsules mature early spring. +
Illustrated +
Brotherella tenuirostris +
Pylaisiadelpha tenuirostris +
Pylaisiadelpha +
species +