COLENSO's NEW-ZEALAND HEPATIC^. 265 



4. Abextba oppositiflora, Steph., sp. n. 

 Monoica, pusilla, caespitosa, olivacea, rigidula. Frondes 1-2 cm. 

 longae, basi decumbentes dein erectae, irregulariter divisae, ubique 



plano-biconvexae ; cellulae corticales 0*017 mm., axiales irregu- 

 lares multo tamen majores bi-tristratae. Hamuli feminei versus 

 apicem plantae ad basin pinnularum oppositi, breves, margine 

 cellulis magnis papulosis ornati. Antherae pinnularum inferiorum 

 basi impositae (». e. pinnulae apice vegetativa)), alveoli 4-5-jugi. 



In size and general appearance very much like Aneura per- 

 pusilla, Col., which is also monoicous, but differs by an almost 

 terete trunk and pinnules with a plane antical and a very convex 

 postical side ; the cortical and central cells are, besides, of equal 

 size throughout. 



5. Aneura striolata, Steph., sp. n. (PI. XXVI. figs. 1-3.) 

 Dioica, parva, fusco-brunnea, caespitosa, humilis. Frondes 

 1-2 cm. longae, e caudice repente adscendentes (vel inter muscos 

 erectae) simplices vel remote paucipinnatae, lineares vel propter 

 apieurn bifurcationem dilatatae, pinnulae superiores breves, in- 

 feriors descendentes in flagella radicantia mutatae ; antice planae, 

 postice leniter convexae, margine acuto. Cellulae corticales parvae 



Cuticula lamellis 

 lamellis promi- 



(0*020 mm.), centrales biseriatae multo majores 



minutis confluentibus striolata margineque iisd 



nentibus minute denticulata. Amenta mascula ad basin frondis, 



singula vel ramulo furcato geminata, oblongo-linearia, alveolis 



4-5-jugis. 



The lamella on the surface of the cells can only be seen with a 

 good instrument, and with a power of at least 500 diam. In 

 younger cells they appear not to be developed, or are not dis- 

 cernible without staining. 



6. Anthocebos abachnoldeus, Steph., sp. n. 



Dioica, flavo-virens, in cortice putrescente arete repens. From 

 1-2 cm. longa, plana ex angusta, basi late obovata, paucilobata, 

 carnosa (medio 8 cellulas crassa), marginem versus sensim atte- 

 nuate solida, /. e. haud cavernosa, margine maxime breviterque 

 lacerata, supra cristis humilibus coalescentihts laceratis instructa. 

 Antherae in fronde disperse, in alveolis amplis singula stipite 



sexcellulari. Cetera desunt. 



There are several species of Anthoceros known which have 

 similar crests on the antical surface of the frond. In Anthoceros 

 punctatus they are reduced to small remote scales scattered over 



LINN. JOITBN. BOTANY, VOL. XXIX. X 





