74 Hygrobiella 



subconformes, monandrce. — Hab. et distr. Species paucae 

 nobis cognitee Europse incolse sunt, locis montosis super 

 saxa madida vigentes. 



1. Hygkobiella laxifolia ('Hook.j 



Jungermania laxifolia Hook. Br. Jung. t. 59. 



Dioica pusilla pallide viridis ceespitosa. Caulis poUicaris suberectus 

 subteres, cellulis angiistis (Q in diametro transverso), corticalibus sub 

 14-seriatis internis pei'iDaulo latioribus, constans, basi saepe valde 

 ramosus ; alii rami breves flagellares, apbylli vel micropbylli, radicantes, 

 alii assurgentes fastigiato-corymbosi inferne pauci-distantifolii superne 

 (fertiles prEecipue) subconfertifolii. RadicellcE. perseepe omnino nuUse, 

 raro paucissim® (1 — 3 nae) ad flagella caulemve adstant. 



Folia transversa erecta, inferiora minuta ovato-subulata pleraque 

 integra ; superiora increscentia subimbricata ovalia et ovali-lanceolata 

 complicato-canaliculata et equitantia, apice ad J — \ bifida, segmentis 

 obtusis acutisve sspe insequimagnis, alia solum emarginata ; cellulcB 

 majusculEe pellucidce leptodermes, rectangulari-liexagon£e subduplo 

 lougiores quam latae. Foliola foliis parum minora subconformia nisi 

 seepe integra vel solum emarginata. Flores dioici : $ in caule ramove brevi 

 longioreve, ssepe iteratim innovando, terminales. Bractece 2 — 3-jug^, 

 periantbii basin amplectentes vel subremotse, foliis caulinis similes, ssepe 

 autem niulto majores, breviter bifidee, inaequilobse, repandse, ad axin a 

 basi ad medium fere usque cellulis bistratis conflates (ex eo quasi 

 costatte); genitalia pauca. Perianthia magna, lanceolato-fusiformia — 

 in fructu ssepe elongata fereque linearia — -alte trigona, ore angusto fere 

 clauso vix subdenticulata, a basi ad apicem lere usque cellulis bi-(ad 

 carinas ssepe tri-) stratis conflata. Cahjptra duplo brevior angustiorque, 

 clavata, ^ inferiore 2 c. crassa, demum apice insequaliter bivalvis, 

 pistillidiis sterilibus basi circumdata. PediceUus perianthio plus duplo 

 longior, c. 16-seriatis, sc. cellulis periphericis 12-seriatis, axialibus 

 (majoribus) 4-seriatis, conflatus. Capsnla anguste oblonga, rufo badia 

 bistrata ; cellulcB stratorum subsequimagnae irregulariter tesselatse, 

 oblongo-4-6-gonte, parietibus lateralibus columnis trabeculisve paucis 

 fulcitis, fibris semiannularibus strati interioris nullis vel perraris et 

 subobsoletis. Elateres breves obtusi bispiri. Spora eodem diametro ac 

 elaterum, globosae sublaeves. Andracia terminalia brevia — raro ramum 



