53 & 
CLASS, XXIV. CriYPTOGAMiA 
parum dilatatae, diaphanae, ad lentem pubescentes 
et solidae. 
a m i cum ramulis alterni , remoti, elono^ati : 
terminales plerumque bifidi, inflexi, apice ob- 
tusi. 
'Fila extra substantiam tenuissima, crystallina, 
aequalia , geniculata , simplicia : intra substan- 
tiam per dichotomias repetitas ramosissima, ex axe 
frondis radiatim prodeuntia geniculata; ramis 
remotiusculis , crystallinis; ramulis fasciculatis, 
fastigiatis, rectis, atropurpureis , versus peripl>eriam 
directis. 
Genicula fasciata, linearia, tenuissima: in 
truncis et ramis m a j ori bus remotiuscula, cum 
articulis aequalia; in ramulis approximata, sub- 
contracta. 
Articuli in ramis majoribus oblongi, cy- 
lindracei , ^pellucidi , vacui; in ramulis brevissi- 
mi, ex ovato subrotundi, opaci, farcti, atropurpurei. 
Siccata xAlga atropurpurea evadit et chartae vel 
vitro arcte adhaeret. Irrorata citius reviviscit. 
7. ' RIVULARIA Linckia. 
R. frondibus tubulosis, inferne rectiusculis, 
superne dilatatis, ramosis, sinuatis : filis intra sub- 
stantiam simplicibus, intricatis, serpentiformi - cris- 
patis , submoniliformibus. Neue Beitrage ^ur Bot 
Th. I. pag. 265. 
j 3 . simplex: tubulis simplicibus, sursum in- 
' crassatis , obtusis. 
Fila intra substantiam geniculata, simplicia, 
submoniliformia, serpentiformi • crispata, per totam 
tubuli substantiam quidem expansa, tamen -in series 
quasdam imordinatas , paulo opaciores, coacervata. 
