164 FLORA OF TASMANIA. [Musci, by W. Wilson. 
tato-ciliatis, dorso ciliato-cristata ; theca immersa subsessilis ovali-globosa acutiuscula ` calyptra campanu- 
lata rufo-fusca.— Mitten, in Journ. Linn. Soc. ined. 
Has. Cheshunt, Archer. 
Disrris. Swan River. 
Subgenus 2. Asromum.—Plante elatiores, cespitose. Folia siccitate crispata ; areolatione e cellulis rotundatis, 
parvis. Capsula pedunculata. Calyptra dimidiata. 
2. Phascum (Astomum) cylindricum (Taylor, in Lond. Journ. Bot. 1846, p. 42).—Mitten, l. c. 
Has. Cheshunt, Archer. à 
Disrris. Swan River. 
Capsula elliptica, subrotunda, apiculata (operculo persistente), brevi-pedicellata. Calyptra cucullata vel conico- 
campanulata. Plorescentia monoica. 
Subgenus 3. AcauLon (Bryol. Europzea).—Gemmaforme, perpusillum, annuum. Capsula globosa, immersa. Calyptra 
minima, capsule vertice insidente. 
3. Phascum (Acaulon) apiculatum (Hook. fil. et Wils. Fl. N. Zeal. p. 59. t. 83. f. 1) ; foliis in 
bulbillo arcte conniventibus obovato-subrotundis acuminulatis concavis integerrimis nervo valido excurrente 
apiculatis. 
Var. turgidum ; foliis internis turgide concavis longioribus.— Mitten, in Journ. Linn. Soc. ined. 
Has. Cheshunt, Archer. 
Subgenus 4. PLEURIDIUM.—Caules tenelli, filiformes, innovationibus annuis continuati (perennes), subramosi. Cap- 
sula brevi-pedicellata, erecta, ovata, brevi-apiculata, terminalis vel per innovationes lateralis. Calyptra plerum- 
que cucullata. Vaginula oblongo-cylindrica.—El. N. Zeal. p. 58. 
4. Phascum (Pleuridium) gracilentum (Mitten) ; “monoicum, habitu P. alternifolii, gracile, foliis 
inferioribus e basi ovali subulato-lanceolato-acuminatis nervo subulam superiorem totam occupante margine 
ad basin partis subulati indistincte crenulato vel levi cellulis inferioribus oblongis parallelogrammaticis 
superioribus minoribus, perichetialibus thecam non tegentibus patulis anguste ellipticis subulato longe 
attenuatis canaliculatis apice parce denticulatis integerrimisve laxe areolatis, theca in pedunculo brevi sub- 
globoso leptoderma operculo brevissimo, calyptra cucullata ad thece mediam descendente.”— Mitten, in 
Journ. Linn. Soc. med. (Tas. CLXXI. Fig. 3.) 
Has. West side of Tower Hill, Cheshunt, Archer. 
Distris. King George's Sound, New Holland (Menzies). 
“Excepting that the perichztial leaves are less straight and bristly, in general appearance scarcely different 
from P. alternifolium, but its leaves are of a different form.” Mitten, l.e.—Pıare CLXXI. Fig. 3; 1, fruiting 
specimen; 2, cauline, and 3, pericheetial leaves; 4, male flower; 5, operculum :—all magnified, 
5. Phascum (Pleuridium) tenellum (Mitten, in Journ. Linn. Soc. ined.); “ monoicum, habitu 
staturaque P. nitidi, flore masculo gemmeformi minuto in foliorum caulinorum axillis cellulis foliorum 
paululum brevioribus firmioribusque.” 
Has. Cheshunt, Archer. 
“When dry, firmer than P. nitidum, with which it corresponds very closely, excepting in the male inflorescence, 
which has been observed on a single individual only. The substance of the leaves is firmer, and the whole plant 
pale-brown. It appears to be distinct, but requires further examination in living specimens."— Mitten, 1. c. 
