POTTIOIDEAE. TnicHosTOwUM. 577 
ribus flavidis firmis laevibus areolata subito in subulam 
flexuosam minutissime quadrate areolatam opacam conca- 
vam, dorso scaberrimam , crassiusculam  lanceolatam, 
nervo lato excurrente percursam, producta; perichaetialia 
longius et tenuius amplexantia longiora; theca in pedun- 
culo longo erecto purpureo erecta cylindrica subaequalis 
exannulata brunnea, operculo conico - subulato longo ere- 
cto; perist. dentes longissimi angusti in conum congesti, 
dense approximati, e basi brevi rubra trabeculala in crura 
duo aequalia arcte cohaerentia pallida rugulosa et valde 
appendiculiformi - nodosa fissi. 
Patria. Yn terra arenosa Chiles australioris: C. Gay. 
Leptotricho tortili haud dissimile, sed foliis papillo- 
sis jam distat. E forma folii Tr. stricto proximum. 
Sectio 1. K,eptodontium Hmp. Linn. XX. p. 70. — Folia 
squarroso-refleza complicato -concava flexuosa, basi e cellulis 
inanibus longioribus superne subchlorophyllosis areolata. — — Theca 
ómnium cellulis orificii terminalibus annulo similibus veluti annulata. 
Inflorescentia dioica, : 
A. Pusilla. 
15. Tr. flexifolium Sm. (Fl. Brit. III. p. 1246.); gre- 
garie cespitosum pusillum | subsimplex fragile lutescens; 
folia caulina erecto-tortilia, madefacta reflexa, parva, 
oblongo -ligulata. breviter. acuminata, parum complicata, 
reflexa, e basi usque ad medium et ultra margine revo- 
luta, apicem versus inaequaliter serrata, basi e cellulis 
quadrate hexagonis parvis ampliusculis pellucidis laevibus 
paucis, superne minutis hexagonis tenuissime papillosis 
areolata; perichaetialia e basi longe convolutaceo-vagi- 
nante e cellulis inferne pellucide laxe elongate hexagonis 
laevibus superne angustioribus punctulatis reticulatà ere- 
cta; omnia subexcurrentinervia; theca in pedunculo lon- 
giusculo flavido strictiusculo v. tortili tenui erecta, an- 
guste cylindrica parva pallida deiv fusca, operculo coni- 
co -obluso brevi; perist. dentes breves pallidi, plus minus 
regulares, plerumque dense cohaerentes binati laeves. . 
€, Müller: Synops. musc, frond. 37 
