€ 
314 RADULEZ. 
emollite aquam cito flavido-tingentes, in cespites latos depressos arcte 
stratificate, vel e ramis pendulz, raro in arborum foliis vivis strato 
simplice repentes. Caules laxe pinnatim ramosi, vel ex p. (raro 
ab initio) dichotomi; rami omnes laterales, infrafoliares, folii basi 
externa contigui, vix leviter adnati. Folia magna, ‘75-3:0™™ 
longa, sat lata, alterna, incuba, integerrima vel solum angulata (in 
unica specie asiatica, autem, insigniter serrata) conduplicato-biloba, 
lobo inferiore minore plicam versus in mammillam radicelliferam 
elevato ; cellule parvee chlorophyllose plus minus opace. Foliola 
omnino nulla, nequidem ad florescentias. /7ores omnium fere dioici, 
in perpaucis paroici: 9 in unica sp. cladogeni, ramulo simplicissimo 
constantes; in ceteris acrogeni, basi innovatione singula, vel seepius 
binis oppositis suffulti. Bractee unijuge, foliis subminores, lobulo 
pro ratione majore eradicellifero, innovationi subjacenti parum 
adnate vel liber. Pistillidia 5-16. Perianthia tubseformia vel in- 
fundibulata, a fronte plus minus compressa, in aliis fere complanata, 
in perpaucis subteretia, rarissime carinata vel plicata, ore ab initio 
hiante subbilabiato et vel recte truncato vel crenato, raro 4-lobo. 
Jalyptra anguste ovalis brevicolla valida subopaca, stratis cellularurs 
tribus pertenuibus conflata. Pedicellus brevis, perianthium subdupla 
excedens, validus, cellulis 12-16 in diametro. Capsula flavida, plus 
minus elongata, plerumque ovali-cylindrica, triplo longior quam lata, 
solu in R. Gottscheana tam lata fere quam longa, ad basin usque 
4-valvis, valvulis integris bistratis ; cellule exteriores sat magne et 
altee, tesselate, pariete moniliformi-incrassato; interiores longe 
tenuiores, lineares flexuose, badiw, obscure transverse _ striolate, 
striis crebris tenuissimis obliquis, fibris semiannularibus autem ut 
videtur orbate. Hlateres prelongi tenues obtusi arcte bispiri. 
Spore magne globose minute tuberculose. Andrecia spicata, 
varie posita, plerumque in ramis terminalia; bractee 3-15-juga, 
equitantes, 1-2- (raro 3-) andre. 
IV. RADULA, Dum. emend. 
Nees Hep. Eur. IIL. 143; G. L. et N. Syn. Hep. 253 ; Radule § 1. 
Radulotypus Dum. Comm, Bot. 112 (a. 1823), Syll. Jungerm, 
38 (a. 1835). 
Caracter generis unici in caractere subtribus continetur. 
Hab. Ad arborum truncos ramosque, etiam ad rupes, raro in ipsa 
terra; unica species, in sylva Amazonica valde frequens, con- 
