ON ANOMOCLADA. 201 



Flores dioici : j ramulo brevi, e caudice, vel e caulis basi oriundo con- 

 stantes. Bractece tristichse, trijug^, extimse minutse orbiculares 

 eraarginatse, intimae foliis subbreviores ovato-rotundce apice 2-3- 

 lobuIatcB, lohuUs apiculatis spinulosis. — Ramulus $ , pro pedicelli 

 receptione ab apice fere ad basin usque excavatus, cavitate pyri- 

 formi obconicave. 



Perianthia foliis sequilonga, iis A. decipientis sat similia, turgide fusi- 

 formia, quasi vesicularia, superne leviter 5-gona, apice ipso in 

 lobulos 5 breves apiculatos spinuloso-denticulatos fissa, demum 

 hinc a basi ad apicem usque capsula3 protrusione hiantia (ad 

 spathee instar). Calyptra ^ brevior ovali-globosa, substantia 

 firma, 6 cellulas crassa, basi et altius pistillidis plurimis — aliis in 

 squamulas foliaceas transmutatis — obsita. Capsula majuscula 

 elongato-ovalis quadrivalvis. 



4. Adelanthus magellanictjs (Lindenb.). 



Plagiochila magellanica, Lindenb. Sp. Hep., 164 ; G. L. et IIT. Syn. 

 Hep., 53. 

 Hah. ad fretum Magellanicum, ab ill. Hook. f. lectus, sscpe in eodem 

 csespite cum A. uncinato consociatus, certe differt foliis triplo 

 nwioribus, sulorbiculatis, latioribus quam longis, ititegerrimis —nee 

 ovatis acutis dentatis. Perianthia nondum vidi, foliis tamen 

 margine antico valide incurvis, cellulis elongatis discoloribus 

 vittatis, &c., sine dubio ad Adelanthum (nee ad Plagiochilam) 

 referenda. 



5. Adelanthtjs falcatus (Hook.), Mitt. 



Jung, falcata, Hook. Muse. Exot., t. 89 ; Plagiochila f.^ Syn. Hep , 



649. 

 Hah. in N. Zelandia, primum a cl. Menzies lectus ; caule ramo- 



siore ; ramis insigniter falcatis ; foliis subrotundis, margine antico 



minus incurvis, postico dentato-serratis, &c., speciem quintam 



optime distinctam prtebet. 

 Before dismissing these closely-allied genera, I add a few differences 

 — probably of slight importance — but apparently constant. 



The flagella in Odontosckis^na are clad with radicles alone, the 

 leaves being altogether obsolete ; in Anomoclada have the tristichous 

 leaves reduced to minute nodules or tubercles, with a fascicle of radicles 

 from the base of each ; in Adelanfkus have the leaves more developed, 

 reaching at least the grade of minute scales. 



In AdelantJius the fertile ramulus is scarcely so long as the perianth 

 that terminates it, and it is excavated to the very base for the reception 

 of the pedicel, which falls away completely along with the empty cap- 

 sule, leaving the ramulus with a pyriform hollow within. I3ut 

 in Odontoschisma the cavity in the fertile ramulus is '•' cylindrica, 

 fundo rotundata," and the basal portion of the pedicel is sometimes 

 retained within it, when the upper portion has disarticulated and fallen 

 away along with the capsule. 



Among recent additions to the British Hepaticte is a fine tall 

 plant — perhaps widely distributed in the Scottish Highlands, but 

 overlooked from its external similarity to Nardia coinpressa {=Junger- 

 mannia coinpressa, Hook.) — which was first distinguished as a species 

 by Dr. Stirton, who called it AlicnJaria viridis iu his MSS. It had 



