Tortula. | 5. TORTULE.E. 165 
mersa, subgloboso-cyathiformis, operculo acuminato ; calyptra infra basin 
operculi descendens, 4-5-fida. 
Hab. Andes Chilenses, Mendoza, Gillies. 
Caulis lineam altus. Folia sordide viridia. 
63. T. PvsiLLA (Hedw. Fund. i. 32, Gymnostomum). Monoica ; 
eaulis brevis. Folia erecto-patentia, obovato-oblonga, obtusa, superne 
excavata, nervo intus superne late lamellato, in pilum diaphanum excur- 
rente, dimidio inferiore cellulis teneris hyalinis oblongis, superiore cel- 
lulis quadratis viridibus. Theca in pedunculo brevi, ovalis, castanea, 
operculo subulato; peristomium si adsit tenerrimum, dentibus irregu- 
laribus, basi in membranam brevem coalitis. 
Pottia cavifolia, Ehrh. Bryol. Europ. Pottia, t. 2. 
Hab. Andes Quitenses, Mendoza, Gillies. 
Caulis lineam altus. Folia lineam longa, e viridi fusca.  Pedunculus 
li-linearis, interdum longior. Theca etiam in statu peristomato pedun- 
culo longior ut mos generis est. 
64. T. ATROVIRENS (Sm. Eng. Bot. t. 2015, Grimmia). Monoica; 
caulis brevis. Folia superiora patenti-incurva, oblonga, acuta, canalicu- 
lata, nervo crasso supra medium intus breviter lamellato excurrente, mar- 
ginibus reflexis, cellulis inferioribus quadratis pellucidis, superioribus 
minoribus granuloso-obscuris. Theca in pedunculo luteo, ovalis cylin- 
draceave, erecta, operculo conico obliquo, peristomii dentibus inzequalibus 
papillosis, basi in membranam brevem coalitis. 
Trichostomum Schimperi, Mont. in Ann. Sc. Nat. ser. 3. iv. 103. 
Didymodon nervosus, Hook. et Tayl. Muscol. Brit. 1. 66. 
Hab. Andes Chilenses, Mendoza, Gillies; etiam in Chili, ez Herb. 
Montagne. 
Caulis lineam altus. Folia $ lineam longa, viridia fuscave. Pedun- 
culus 2—3-linearis altiorque. 
The description, C. Müll. Syn. i. 590, appears to relate to 
some very different moss. 
65. T. Dram (Fuernr. Bryol. Europ. t. 7, Pottia).  Polygama ; caulis 
brevis. Folia patentia, superiora spathulato-elliptica, acuminata, serru- 
lata, nervo fusco percursa, cellulis basilaribus elongatis angustis pellucidis, 
superioribus quadrato-rotundis granuloso-obscuris. Theca in pedunculo 
elongato, oblonga, obovata truncatave, operculo subulato post fructus de- 
hiscentiam ad apicem columelle adhzrente persistente ; ealyptra fusca, 
laevis. : 
Hab. Andes Chilenses, Mendoza, Gillies; Magellan, Hermite Island, 
J. D. Hooker; Cabo Negro, Lechler, n. 1091, 1213 (Pottia magellanica, 
Scehimp.); Sandy Point, Lechler, n. 1199 (P. antarctica, Schimp.). 
Huic theca longior et pedunculus crassior ; forsan species diversa. 
66. T. FLAVISETA (Mont. in Ann. Sc. Nat. ser. 3. iv. 122, Pottia). 
Monoiea; cæspitosa, radiculis permultis intertexta, subsimplex, inno- 
