BFNA Title: Gollania
Author: M. Higuchi
Date: Oct. 2001
Edit Level: R +
Version: 2

Bryophyte Flora of North America, Provisional Publication

Notice

Return to Home

 

XX. GOLLANIA Brotherus in A. Engler and K. Prantl, Nat. Pfl. 1(3): 1054, figs. 755, 756. 1908 * [For William Gollan, d. 1905]

 

Masanobu Higuchi

 

Elmeriobryum Brotherus in A. Engler and K. Prantl, Nat. Pfl. ed. 2, 11: 204

 

Plants with dorsal, lateral, and ventral stem leaves often different in shape and size. Stem leaves straight to falcate, ovate-, oblong- or narrowly lanceolate; margins recurved at base, serrate or serrulate, rarely entire distally, entire proximally; costae double; median laminal cells linear, thin- to thick-walled, smooth, rarely porose; alar cells differentiated, subquadrate to rectangular. Branch leaves smaller and narrower than stem leaves. Sexual condition dioicous; inner perichaetial leaves oblong-lanceolate, filiform-acuminate, serrate, usually reflexed at apices. Seta long, smooth, usually sinistrosely twisted in proximal half and dextrorsely twisted distally when dry. Capsule inclined to horizontal, ovoid to cylindric; exothecial cells elongate-rectangular to subquadrate, rarely polygonal; operculum conic, sometimes with a short beak; peristome double, exostome teeth transversely smooth to striolate proximally, papillose distally on the external surface, papillose and with projecting trabeculae on the internal surface; segments of endostome teeth keeled, not split; cilia 2--4; basal membrane about 1/2 as high as exostome teeth. Spores finely papillose.

 

Species 20 (1 in the flora): nw North America; Asia (Bhutan, China, India, Indonesia, Japan, Korea, Nepal, Pakistan, Philippines, e Russia, Taiwan).

 

SELECTED REFERENCES Ando, H. 1957. The first record of Gollania in North America. Bryologist 60: 326-335. Higuchi, M. 1985. A taxonomic revision of the genus Gollania Broth. (Musci). J. Hattori Bot. Lab. 59: 1--77.

 

1. Gollania turgens (Müller Hal.) Ando, Bot. Mag. Tokyo 79: 769, fig. 6 . 1966

 

Cupressina turgens Müller Hal., Nouvo Giorn. Bot. Ital. n. ser. 5: 196, 1896; Hypnum turgens (Müller Hal.) Paris

 

Stem to 7 cm, densely pinnate-branched, rarely loosely branched; leafy stems complanate, with secund leaves, hypnaceous in appearance. Stem leaves well differentiated; dorsal leaves strongly falcate, narrowly lanceolate, gradually narrowed to a slender and long apex, subcordate at base, plicate, 2.7--2.9 x 0.60--0.75 mm; margins markedly recurved both at base of apex and below, irregularly serrulate above, subentire proximally; costae double and parallel, 1/4--1/3 the leaf length; median laminal cells linear, weakly flexuose, lumen 60--80 x 2--3 µm, thick-walled, porose, smooth; alar cells well-differentiated, 6--8 in marginal row, 8--10 in transverse row; ventral leaves flat at apices. Branch leaves narrower, 1.6--2 x 0.35--0.45 mm. Innner perichaetial leaves slightly reflexed at apices; costae double or indistinct; laminal cells thick-walled. [Seta 2.5--3 cm. Capsule horizontal, cylindric, weakly arched, 2.2--2.8 mm exclusive of the operculum, 0.9--1.2 mm wide; exothecial cells subquadrate, rarely polygonal, 17--48 x 17--27 µm, thick-walled. Spores 18--22 \um.]

 

Capsules mature fall. Boreal forest zone to arctic tundra, mostly growing on wet or moist rocks, often calcareous; 710--4730 m; B.C., Yukon; Alaska; Asia (China, Japan, Nepal, Russia).

 

Gollania turgens  is known from 10 or fewer localities from North America and sporophytes not known from North America. This species exhibits a North Pacific (East Asia-western North American) distribution, although the range of the East Asian population extends more strongly southward. The range of this species is roughly overlapped by that of Takakia. Gollania turgens is much like Hypnum species in appearance, especially by the densely pinnate-branching and falcate leaves, but it is distinguished in the long and parallel costa, markedly recurved and serrulate leaf margins of stem leaves, thick-walled and porose laminal cells of stem leaves, and well-differentiated alar cells.