VwVU^ 



REVISION OF COLEXSO'S NEW-ZEALAND HEPA 



A Revision of Coienso's Hepaticae, with Descriptions o£ New 

 Species collected by him. By F. Stepuani. (Communicated 



by W. T. Thiselton Dter, C.M.GK, F.B.S., F.L.S.) 



[Read 18th February, 1892.] 

 (Plates XXVI.-XXVIII.) 



The following Revision comprises a large number of Hepatic®, 

 collected by W. Colenso, Esq., F.U.S., and published by him in 

 the ' Transactions ' of the New Zealand Institute ; they all come 

 from the Northern Island, and being collected during a long 

 course of years and at different stations, give a fair idea of the 

 flora of Liverworts in this part of the country. 



Of many species represented in this collection, a great number 

 of specimens have been sent to me; they contain a valuable 

 assortment of forms, such as can be procured only by a long 

 residence, and by an indefatigable collector like Mr. Colenso, 

 who appears to have been always on the hunt for new forms, 

 never overlooking the smallest specimen if it appeared to differ 

 from the common form. "While this has contributed to raise 

 the value of the collection, ii has given him also occasion to 

 create a number of new species, which have turned out to be 

 only varieties of known plants and have had to be reduced. 

 I shall give a list of them at the end of this paper. 



A large number of specimens had not been named ; I have 

 tried to determine them, and have found the following new 

 species amongst them, viz. : 



1. AnEUKA JEQUITEXTA, Stcph., sp. n. 



Monoica, pusilla, viridis, in cortice gregarie crescens, gracilis. 

 Frondes irregulariter divis^, arete repentes ; truncus angustus, 

 1-2 cm. longus, rami ramulique aequilatae, breves, lobuliformes, 

 oranes 8-9 cell, crassi, antice plani, postice leniter coavexi, 

 cellulis cequimagnis adificati, margine ipso obtuso 3 cell, crasso. 

 Calyptra clavata, basi 7 cell, apice 3 cell, crassa, superne cellu- 

 loso-tuberculata, mamilla apicali nulla. Capsula in pedicello 

 Jongiore an^uste ovalis, usque ad basin quadrivalvis, sporae 

 0-012 mm. brunnese, cuticula l*vi. Elateres in apice valvarum 

 persistences, fibra spirali singula instructi, longitudine vanabili. 

 Amenta mascula linearia, alveolis 9-10-jugis. 



In most species of Aneura the central cells are larger than 

 those of the cortical layer. Aneura aquitexta is one of the few 

 exceptions to this rule. The large tropical species of Aneura 



