﻿94 Dixon: New and rare Australasian 



mutica (?), proxima brevi-aristata, ceteris multo brevioribus, 

 brevissime cuspidatis. Seta perichaetium vix superans, theca 

 (unica visa) breviuscula, curvata, oblongo-cylindrica, collo abrupto 

 baud strumoso. 



Habitat: "In dense forests, Gordon River, Tasmania, Dr. 

 MilUgan, 11.46." Herb. Mitten. 



This is no doubt nearest to D. grossialare C. Mull., but the 

 leaves present some marked diflferences in the narrower, thinner 

 nerve (thin at base but not narrow as in the Billardieri-group) , 

 which is not excurrent, vanishing in the somewhat wide apex, 

 instead of being prolonged into a finely filiform arista; the upper 

 cells also of a somewhat different nature (the figure may 

 be compared with my figures of D. grossialare in N. Z. Inst., 

 Bull. 3: pi. I. f. 4). The perichaetium, strikingly developed 

 there, is still more remarkable in the present case; it fits the seta 

 "like a glove," and it is difficult at first sight to persuade oneself 

 that it is not actually the seta itself; the very short, almost 

 invisible points to the median bracts help to bear out the illusion, 

 and at the same time constitute a difference from D. grossialare, 

 where they are longer and more conspicuous. 



Dicranum (?§ Holodontium) aucklandicum Dixon, sp. nov. 

 Plate 9, figure 2 



Gracile, laxe caespitosum, nigricans. Caulis circa i cm. altus, 

 parce ramosus, flexuosus, hand radiculosus. Folia remoHuscula, 

 alcata, siccitate vix mutata, apice solum leniter flexuosa, 4-5 mm. 

 longa, e basi brevi-lanceolata sensim in subulam pertenuem 

 integerrimam acutissimam attenuata. Costa sat valida, superne 

 aegre discriminanda, totam fere subulam occupans. Cellulae 

 alares numerosae, magnae, rubrae, auriculas pro more magnas 

 instruentes; rete reliquum angustissimum, per totum folium elon- 

 gatum, peranguste lineare. 



Autoica? Flos masc. sat magnum, longe infra caulis apicem 

 situs. Bracteae perichaetii e basi lata vaginante in subulam 

 tenuem cito angustatae. Seta vix i cm. longa, tenuis, substricta. 

 Theca minuta, deoperculata circa 2 mm. longa, elliptica, suberecta, 

 leviter curvata subsymmetrica. Operculum haud visum. Peri- 

 stomium omnino fere peritum. 



Habitat: "Auckland Island, New Zealand," in herb. Mitten. 

 No further particulars are given. The specimen was marked 



