POTTIOIDEAE. cüwsELIA. ^ ^ 651 
a. Fructificatio terminalis, 
12. G. riparia C. Müll; dioica; caulis laxe cespitosus 
subhumilis dichotome divisus intense viridis inferne sae- 
pius metallico - nitens; folia caulina dense imbricata, ma- 
dore parum patula, e basi decurrente anguste ligulato- 
oblonga obtusiuscula, apice parum reflexa, integerrima, 
carnosula, intense chlorophyllosa, e cellulis densis par- 
vulis subrotundatis robustis areolata, margine ubique cel- 
lulis, obscurioribus limbata , nervo valido angustissimo 
subcarinato excurrente percursa, saepius dilacerata; pe- 
rich. majora, basi infima subvaginantia et laxius reticu- 
lata; theca in ped. brevi flavido exserta,- turgide ovalis 
flavida: leptodermis, operc. conico acuminato subrecto, Ca- 
lyptra. conico -dimidiata glabra sordide fuscidula; perist. 
d. liberi robusti intense purpurei in cilia 2 — 4 filiformia 
stricta siccitate subcontorta fissi, laeves. 
Cinclidotus riparius Walk. Arnott in Disp. méth. p. 23. — Br. 
Europ. Fasc. XVI, Ripariaceae. Cinclidotus, p. 10. t. 2. — Raco- 
mitrium riparium Brid. Mant. Musc. p. 80. — I. p. 223. — Tri- 
chostomum riparium Web. et Mohr, Bot. Taschb. p. 120. 
B. terrestris; plantae humiliores subcespitosae erectae, 
minus ramosae, folis pallidioribus, siccitate -contortis, e 
cellulis minutissimis opacis areolatis, nervo in mucronu- 
lum acutum brevissimum exeunte flavido percursis, theca 
longius pedunculata. 
Br. Europ. l c. — Barbula cylindrica. Wils. in Phytologist. 
1845. p. 282. — B. Brebissonii Brid, I. p. 834. —  Trichostomum 
flavipes Steudel. Nomencl. Crypt. p. 421. — Racomitrium flavipes 
Brid. L.p. 224. — -Didymodon Cinclidotus De Not. Specim. de Tor- 
tulis Ital, p. 45. — = Desmatodon. dichotomus Brid. I. p. 823. sec. 
De Notaris in Syllab. Musc, Ital. p. 183. huc pertinet. — Varietas 
memorabilis, quae, primo visu species propria pulchra facile putari 
potest. - 
Patria. in rivulis alpinis per Europam temperatam 
et calidiorem hic illic, rarior. Var. f. Forma amphibia, 
terram amans, in Normandia pr. Falaise: a Brébisson 
et. Romae in Villa Pamphili a Bridel primum lecta. 
Pi: masc. gracilior, magis fasciculata, floribus conge- 
nerum. 
