POLYTRICHUM. 



387 



2a. The same. 



3. Epiphragma. 



4. Operculum long section. 



5. Calyptra. 



6. Cellular process of Calyptra. 



7. Leaf. 



8. Vein and its columella, portion of 



9. Portion of margin of leaf. It. Ass' 562. 



2. Polytrichum falcifolium, Gr. PI. XCIII. Fig. I. 



Caule siraplici, foliis e basi lanceolata subulatis falcatim incurvis 

 integris, capsula rotundato-ovata exapophysata inclinata. 



Hab : In arenosis Boga Panee, Collium Khasiyensium. 



Aggregatum: Caules breves vix lineas tres longitudine ex- 

 cedentes. 



Folia siccatione tortiia et incurva, madore falcatim incurva, e 

 basi lanceolata cauli adpressa longe subulatim acuminata, 

 concava, obtusa, integra marginibus subinvolutis, percursa 

 vena crassa completa, lamellis conspicuis subseptem intructa. 



Perichaetialia basi largiora magisque membranacea. 



Seta stricta, longitudine unciam puallo excedens, rubrotincta, 

 siccitate tortilis. 



Vaginula raediocris, anguste cylindracea. Paraphyses subnullae, 

 pistilla pauca, styli longi apicibus solito dilatatiores. Capsul- 

 inclinata nutansve, siccatione interdnm erecta, saepius rotund- 

 ato-ovata et inaequali, interdum suburniformis, ore vix. 

 coarctato nunc obliquo, fusco-brunnea, inconspique areolata ; 

 membrana interna libera, apicem versus capsulag in annulum 

 inflexa. 



Peristomium e dentibus 27 — 33, sed saepius ut videtur 32, basi 

 connexis, brevius, acutis, leviter inflexis, sublentem materie 

 grumosa hino illinc opaciusculis, inaequalibus, latioribus (ob 

 cohesionem) pluribus apice subemarginatis medioque sulcatis. 



Epiphragma demum liberum. 



Columella inclusa, 4 anguslaris, fere 4-alata, apice planiuculo 



annulum membranae interioris subattingens. 

 Caetera non visa. 



