68 TASMANIAN BRYOrHYTA, 



6 mm., mouth fimbriate, calyptra delicate, shorter; in- 

 volucre cupshaped, fimbriate. Antheridia on short ventral 

 branches. 



Common in shaded places. Australia. New Zealand. 



Pallavicinius, Gray. 

 Fvond cvlindric below, expanding above into a decum- 

 bent or erect, simple or forked expansion; midrib bold, 

 with a central strand of small cells. Archegonia in groups 

 on the upper surface, surrounded by a short, cup-shaped 

 fimbriate involucre; perianth cvlindric, with a fimbriate 

 mouth ; calyptra about as long, membranous. Antheridia 

 solitary, globose, biseriate on dorsal aspect of the midrib, 

 each covered by a dentate scale. 



Pallavicinius lyeUii (HuoJi), Gray. — Decumbent, sim- 

 ple, or with branchips arising from the midrib, sometimes 

 forked, 3-4 cm. long, about 4 mm. wide; wings undulate, 

 ascending; margin entire; midrib slender. Fruit about 

 the middle of the frond; involucre short, fimbriate above; 

 l^erianth 6 mm. long, cylindric, mouth fimbriate, 

 calyptra often protruding beyond the perianth. Spores 

 brown 26 fj.., finely reticulated. 



Cosmopolitan. 



PaUavicinius connivens {Col.), St. — Erect from a cylin- 

 dric rhizome, 1-2 cm., lower portion slender, cylindric, 

 above 2-3 times forked; broadly winged, flabellate. edges 

 involute, margin strongly dentate. Fruit towards the base 

 of the primary fork, or on the dorsal surface of the mid- 

 rib ; involucre short, cup-shaped, with a fimbriate mouth ; 

 perianth broadly cylindric, 3-4 mm., mouth fimbriate; 

 calyptra shorter than the perianth. Spores yellow, marked 

 v.'ith short, sinuous, shallow ridges or irregular papillae, 

 30 „. 



Mt. Wellington Plateau. New Zealand. 



Symphyogyna, Mont, et Nees. 



Fronds cylindric below, expanded and membranous 

 above, simple or forked; midrib narrow, wings broad, 

 membranous. Archegonia in small groups on the dorsal 

 aspect of the midrib, involucre consisting of a single braet ; 

 perianth absent; calyptra. bold, cylindric, membranous. 

 Antheridia single, but many in rows on each side of the 

 midrib, each contained in a small bract. 



Margin entire interrupia 



Margin dentate 2 



