GYMNOSTOMUM. 



395 



5. Gymnostomnm long iro strum, Gr. PI. XCV. Figs. II. III. 



Cable innovationibus prolifero vel simplici, foliis lanceolato- 

 linearibus acutis solidiveniis integerrimis marginibus involutis, 

 capsula erecta oblongovata, operculo longe et recte rostrato 

 capsulam excedente. 



Hab: In collibus Khasiyensibus sed locus raihi incognitus. 



Csespitosnm. Caules decumbentes saipe unciales. radiculis brun- 

 neis villosi, proliferi, et saepe parce raraosi. Folia siccitate 

 insigniter involute et incurvata, madore ascendenti-patentia, 

 inferiora oblongo-lanceolata, superiora lineari-lanceolata, lu- 

 ride viridia, subcarinata, marginibus flexuosis involutis, areo- 

 lis minutissimis, percursa vena fuscescente completa. 



PerichEetialia conformia, interiora minima 



Seta brevis vix bilinealis lutescens, terminalis si solitaria, si 

 plures terminates lateralesque, siccitate tortilis. 



Vaginula cylindracea. Parapbyses filiformes hyalinae. Pistilla 

 pauca. Capsula exannulata, oblongo-ovata vel cylindraceo- 

 oblonga, lutescens, parietibua tenuibus diaphanis collo con- 

 trictiusculo, ore irregulariter denticulato rubro. 



Columella clavata, inclusa, breviter stipitata basi reliquiis mem- 

 branae internse cincta. 



Sporula rotundata. lee via, immersa subdiaphana. 



Operculum e basi conica rubra longe rostratum, capsulam paul- 

 lo excedens, rostro lutescenti acuto, basi conica columellas 

 apice adhscrenti obtrusa. Calyptram non vidi. 



Affiuis G. xanthocarpo. Hook. "Muse. Exot p. 2 t. 153 prseser- 

 tim capsula structura. Habitus, ut videtur, quodammodo Ca- 

 lymperes Gardneri. 



Of this very distinct species, I have only seen one capsule be- 

 fore the fall of the operculum. The inner membrane is to- 

 tally distinct from the capsule, and is connected only with 

 the margin of the much dilated apex of the columella. It 

 subsequently seems to become irregularly ruptured ; the base 

 alone remaining, and surrounding the lower portion of the 

 columella. 



1. (Fig. II.) Plant. 



2. Capsule, seta, and inner Perichcjetial leaves. 



