HEPATIC AUSTRALES. 123 
fuscus, repetito furcatus, flagellis sparsis. Folia caulina conferta, 
decurvo-homomalla, valde concava, in plano ovato-oblonga (1:‘5mm. 
longa, 0°83 mm. lata) asymmetrica, margine supero longe brevi- 
terque arcuato, infero stricto, apice ad 1/3 inciso-biloba sinu 
angusto, laciniis porrectis. valde inaequalibus, supero parum 
longiore, triplo latiore, marginibus repandis, suberosis. Cellulae 
superae 18/18yu, basales 27/27 trigonis subnullis. Amphigastria 
caulina parva, cauli aequilata, in plano 0°33 mm. longa et lata, ad 
medium inciso-triloba, sinubus angustis, lobis ligulatis obtusis. 
Hab. Australia, (Cambewarra Mountain): Watts legit, 917. 
Mastigobryum fasciculatum St. Mount Gower, Lord Howe 
Island: Watts, 1911. 
Mastigobryum gracillimum St., 0.sp. 
Sterilis major flaccida, intense viridis. Caulzs ad 4 cm. longus, 
sparsim longeque ramosus, flagellis breviusculis sparsis. Folia 
caulina conferta, oblique patula, decurvula, in plano oblonga 
(2°33 mm. longa, basi 1‘5 mm.-lata) symmetrica, apice truncata, 
0-5 mm. Jata, emarginato-tridentata, dentibus majusculis paucis, 
minimis interjectis, sub apice similiter denticulata, basi utrinque 
rotundata. Cellulae superae 18/18» parietibus validis, basales 
27/45 trigonis majusculis. Amphigastria caulina magna, latiora 
quam longa, rectangulata, (1:33 mm, lata, 0°83 mm. longa) dense 
valideque dentata, haud raro duplicatim dentata. 
Hab. Australia, New South Wales, (Wyong, and Valley of 
Waters): Watts, 939, 987. 
Mastigobryum Gunnianum St., n.sp. 
Sterilis, mediocris, intense flavicans, rigida. Caulis ad 3 cm. 
longus, parum longeque ramosus, flagellis brevibus numerosis. 
Folia caulina conferta, recte patula, canaliculatim concava, margine 
infero arcte incurvo, in plano oblonga (1:75 mm. longa, supra basin 
0-83 mm. lata) asymmetrica, margine infero substricto, supero e 
basi late rotundata substricto, apice truncata (0°5 mm. lata) 
emarginato-tridentata, dentibus validis, triangulatis, divergentibus 
acutis. Cellulae superae 18/18 parietibus validis, basales 27/45 
