105 



CEPHALOZIA MACBANTHA Kaal. & Nicholson, nov. sp. 



AucTORE B. Kaalaas. 



(Plate 512.) 



Dioica, majuscula, laxe caespitosa vel supra muscos repens, 

 pallide-viridis — albescens, 1-1-5 cm. longa et cum foliis 1-2 mm. 

 lata, eflagellifera, stolones breves autem hie illic emittens. 



Caulis prostratus, radicellis crebris hyalinis vel fuscescentibus 

 repens, parce ramostis, ca. 1-6-2 mm. in diam. ; celluloe corticales 

 magnae, pellucidne, breviter rectangulares, 8-10 seriatae. 



Folia caulis ramorumque sterilium distantia, baud contigua, 

 parum oblique— fere longitudinaliter affixa, antice parum vel vix 

 decurrentia, patula vel interdum ad anticum vergentia, leniter 

 concava — subplana, 0-44-0-49 mm. longa et 0"49-0-57 mm. lata, 

 e basi angustiore suborbiculata — oblique rotundato-quadrata, ad 

 ■J-f incisa, sinu pro more angusto, rarius latiore, obtuso vel acuto, 

 segmentis acutiusculis vel obtusiusculis, apice incurvis, rarius 

 conniventibus, pro more inasqualibus, segraento dorsale distincte 

 minore et angustiore. 



Cellules folii sat magnae, hexagonae — quadratae, parce chloro- 

 phylliferae, valde pellucidas, tenui-membranaceae, sine trigona, 

 49-77 [X longae et 28-49 /a latae ; cuticula laevis. 



Amphigastria rara, hie illic tamen obvia, parva, lanceolata — 

 subulata. 



Perianthium in ramis sat elongatis valde radiculosis terminale, 

 magnum, ad 4-55 mm. longum et 1-26 mm. latum, e basi leniter 

 curvato elongato-ovatum, adultum teres, apicem versus solum 

 trigonum et plicatum, ore paulum constricto truncato vel sub- 

 denticulato, baud setuloso, superne uni-, medio bi-, basi tristratum, 

 cellulis elongato-rectangularibus, 84-112 /x longis et 23-24 /x latis ; 

 calyptra carnosa ; archegonia ad 10. 



BractecB perichcetii trijugae, intima^ magnae, usque ad 1-9 mm. 

 longa3, ad -J- vel ultra 2-3-fidae, segmentis lanceolatis, acutis, in- 

 tegerrimis, marginibus saepe magno dente versus basin prgeditis ; 

 bracteola intima bracteis aequimagna, bifida, Integra. 



PlantcB masculce plantas femineas intermixtse. Andracia 

 medium rami vel ramum totum tenentia, multijuga ; bracteae 

 foliis paulum latiores et concaviores, bifidae, lobo dorsale incurvo. 

 Antheridia solitaria. 



Cetera desunt. 



Hah. In palude inter Sphagna prope Broadstone Warren, 

 Ashdown Forest, provincia Sussexite, Anglite, ubi clar. W. E. 

 Nicliolson mense Junio 1908 legit. 



Haoc species nova Cepkalozice media Lindb. {= C. lumikefolicB 

 Dum.?) valde similis, differt autem ab hac magnitudine plantoa 

 prsosentia crebriore amphigastriorum, cellulis folioi'um multo 

 majoribus et praecipue perianthio magno ct ideo certe species dis- 

 tincta. 



Journal of Botany. — Vol. 49. [April, 1911. J i 



