478 | STEGOCARPL PLEUROCARPIL.  uvPxsux. 
^" Notis laudatis ab 12. filamentoso var. tenui facile di- 
*ünguitur. = cadis 
447. H. triste C. Müll; dioicum; cespites latissimi 
deplanati viridissimi sordidi v. lutescentes maxime inter- 
texti, caulis longe repens, ramis breviusculis filiformibus 
tenerrimis ascendentibus in ramulos breves distantes apice 
subcurvulo | minutissime gemmaceo-clavatos divisis parce 
partitus, filis folioliformibus subcellulosis vix ullis obte- 
cetus ;- folia caulina. Jrmore subito. sguarrosa, e basi la- 
tiuscule amplerante anguste. subligulato - acuminata, su- 
periora brevissime mucronata, inferiora obtusa, concava 
subreflexa, margine erecto, subundulato ob papillas gros- 
siusculas distinctas “valde crenulato , nervo dimidiato v. 
saepius nullo, cellulis grosse rotundatis mollibus viridis- 
simis chlorophyllosis. 
^ Leskea fragilis Hook. et Wils. in Drumm. Muse, Amer, NO. 
101. —  Sulliv. Musc. Allegh, Exs. No. 71! —  Leskea tristis Ce- 
sati in De Not, Syllab. Muscor: 1838! p. 67!1 
Patria. America septentrionalis, in convallibus nee 
non in summis montibus, ad arborum corticem vulgare a 
Montreal usque ad New - Orleans, hucusque semper: ste- 
rile collectàm: Drummond, Sullivant.” In [talia ad 
terram montis di s. Crescenzio prope Verbanum primus 
omnium legit: Cesati sterile!" 
Ab JH. cutenulato affini caraeteribus expositis longe 
distans, quoad foliorum siructuräm internam M. viticulo- 
sum magis àemulans. 
448. M. filamentosum Bertol. (Amoen. p. 438.); 
dioicum ; caulis repens flexuosus,. ramis brevibus tereti- 
bus -obtusiusculis incurvis simplicibus v. subfasciculatim 
ramulosis ascendentibus irregulariter pinnatus, filis sim- 
plicibus folioliformibus multis obtectus; folia dense ap- 
pressa, humore patula subsecunda, e basi ovata margine 
late revolutà lanceolata , breviter falcate acuminata, con- 
cava, erenulata, nervo valido rufescente ante apicem eva- 
nido, cellulis inerassate rotundatis opacis tenuissime pa- 
pillosis; perich. latius lanceolato - acuminata pellucida te- 
