112 



peristomium duplex; exostomii dentes lanceolato-subalati, c. 

 0,3 mm longi et c. O, o 6 mm lati, flavidi, dense lamellati, 

 apice hyalini, scabridi; endostomium sordide flavescens, mi- 

 nutissime papillosum; processus carinati, anguste perforati; 

 cilia 0; operciilum e basi conica obtuse apiculatum. 



Patria. New South Wales, ad ligna putrida pr. Bal- 

 lina (W. W. Watts n. 211). 



Species /. austro-pusillo (C.-Miill.) affinis, sed statura 

 robustiore foliörumque forma optime diversa. 



173. Isopterygium amoenum Broth. n. sp. 



Autoicum\ robustiusculum, caespitosum, caespitibus 

 densiusculis, pallide lutescentibus, hic illic pulchre fusco- 

 aureo tinctis, nitidis; caulis elongatus, repens, per totam 

 longitudinem fusco-radiculosus, laxiuscule foliosus, pinnatim 

 ramosus, ramis complanatulis, brevibus, vix ultra 5 mm lon- 

 gis; folia homomallula, concaviuscula, ovato-lanceolata, an- 

 guste acuminata, marginibus ultra medium revolutis, inte- 

 gerrimis, enervia, cellulis anguste linearibus, basilaribus in- 

 fimis abbreviatis, oranibus laevissimis; bracteae perichaetii 

 internae e basi subvaginante subito anguste acuminatae, 

 acumine recurvo, integro ; seta 1 cm älta, tenuis, rubra, lae- 

 vissima; theca cernua vel horizontalis, ovalis, sicca deoper- 

 culata sub ore vix contracta, fuscidula; peristomium ut in 

 specie praecedente; spori 0,oo7 — 0,oio mm, ochracei, lae- 

 vissimi; operculum e basi conica obtuse apiculatum. 



Patria. New South Wales, Bichmond Biver (W. W. 

 Watts n. 802, 888). 



Species pulchra, a cOugeneribus foliis marginibus ultra 

 medium revolutis jam dignoscenda. 



174. Isopterygium arachnoideum Broth. n. sp. 



Dioicum; tenerrimum, caespitosum, caespitibus densis, 

 laete viridibus, aetate lutescenti-viridibus, sericeis ; caulis re- 

 pens, per totam longitudinem fusco- radiculosus, dense ra- 

 mosus, ramis brevissimis, suberectis, haud complanatis, dense 



