354 Transactions. — Botany. 



Art. LII — A Description of some new Species of Gymnostomum. 



By Charles Knight, F.R.C.S., F.L.S. 



[Bead before the Wellington Philosophical Society, 29th August, 1874.] 



1. Gymnostomum patulum, n. s. 

 Caulis brevis. Folia sicca crispata anguste lanceolato-linearia basi vix latiora 

 margine subapicem erecta, nervo virido in acumen producto e cellulis minutis 

 rotundatis chlorophyllo repletis basi parallelogrammis laxioribus areolata: 

 perichsetiala longiora erecta linealia, Theca in pedunculo brevi elliptica, 

 orificio membrana clauso, operculo oblique subuli-rostro. 



Stems short. 



wider 



the 



nerve 



areola formed of minute rounded cells filled with chlorophyl, towards 

 the base more lax and four-sided, the perichsetial leaves longer, erect. Fruit- 

 stalk no longer than the perichsetial leaves. Capsule elliptic, the mouth closed 

 by a membrane, operculum oblique with an awl-shaped beak. 



2. Gymnostomum Jcnightii, n. s. Schimp. in litt. 

 Caulis perbrevis. Folia linguceformia carinata, marqine e basi ad avicem 



recurva 



infra apicem evanido. Theca in pedunculo medio erecta oblonga sicca cylin- 

 drica, operculo rostrato, et thecae orificium membrana non clausum. 



Stem very short. Leaves, tongue-shaped, keeled, margins recurved from 

 base to apex. Areolae minute, round, pellucid, nerve stout, vanishing below the 



Capsule oblong, erect, mouth not closed by a membrane. Operculum 



apex, 

 beaked . 



Gymnostomum 



Plantse densissime caspitosce gracillimce, inferne ferruginea*. Folia minuta 

 erecta crispula lanceolato-linearis mutica obtusa concava, abrupte evanidinervia, 

 margine minute crenulata et circum apice erecta, e cellulis basi rectangnlar- 

 ibus pellucidis superne rotundatis parvis papillosis areolata. Theca ovali- 

 cylindrica ; ore e cellulis transverse angustatis pluriseriatis formato. 



Stems densely coespitose, slender, ferruginous below. Leaves minute, erect, 

 crisped when dry, linear-lanceolate, concave, obtuse, with a mucro. Margin 

 minutely crenulate, erect round the blunt apex ; nerve ceasi 



apex. (Japsi 

 narrow cells. 



dry, 



g below 



This moss differs greatly from Seliga-a calmrea, Br. ct Sch., to which 



