4G MB. R. SPRUCE ON THE MOSSES 



Hook, et W.), longe nobilior in cinere vulcanico invenitur, locis 

 Paramo de Ruiz (Purdie) et Volcan de Pichincha (Jameson). 

 It is difficult to decide from descriptions whether A. brevipes 

 and A. turgescens may not be mere varieties of A.rupestris, to which 

 opinion I rather incline. The inflorescence of the Andreaea seem 

 to vary as in many Hepaticce, and the length of the fruit-stalk as 

 in Sphagnum. 



Acroschisma, Ilook.f. et Wilson. 

 Acroschisma andensis, sp. n. C&spites laxiusculi. Caules unciales 

 e basi decumbente erecti subramosi v. nonnunquam valde ramosi. 

 Folia haud dense imbricata, inferiora badia late patula v. etiam squar- 

 rosa, sicca vix mutata, ambitu anguste ovato-lanceolata sensim sub- 

 acuminata obtusiuscula, supra basin valde concavara (fere hemisphae- 

 ricam) panduriformi-constricta et ita canaliculata ut subulata videntur, 

 apice subincurva, enervia ; superiora (secus ramorum apicem) sensim 

 majora e rufo flavida, incurvo-erecta longe ovato-lanceolata subacuta 

 canaliculato-concava, supra basin erectam amplectentem paullo con- 

 stricta, enervia v. basi brevissime 2-plurinervia. F. perickcetialia cau- 

 linis inferioribus quater majora, erecta convolutiva subacuta apicula- 

 tave, raro enervia, ssepius basi 2-10-nervia, et baud raro lineis brevibus 

 longitudinalibus incrassatis hie illic sparsa. Cellules foliorum parvae 

 laeves parietibus crassis; infimae lineari-rectangulares, media; subelon- 

 gate hexagonae, supremae subquadratae. Monoica. Flores <3 laterales, 

 turgide gemmiformes, foliis subrotundis apiculatis concavis enerviis ; 

 antheridia sub-20 majuscula cylindrico-subulata (obclavaeformia) in- 

 curva, cum paraphysibus longioribus filiformibus vix parum clavatis 

 articulatis saepe apice in conum adglutinata. Flores $ terminales 4- 

 gyni eparaphysati, archegoniis sterilibus ad pseudopodii basin persis- 

 tentibus. Pseudopodium perichsetium excedens basi pallidum superne 

 rufum siccando dextrorsum valde contortum, apice subincrassatum et 

 tubum vaginalem lacerum gerens. Capsula erecta rufa laevis cylin- 

 dracea secus apicem paullisper latior, siccando cylindrico-urceolata, 

 collo nullo, ab apice vix ad \ usque in valvulas 10 subinaequales fissa, 

 valvulis disco parvo apicali coalitis et siccando cum eodem (columellae 

 tenui adhaerente) intro curvatis. Capsula parietes e cellularum laminis 

 duabus conflati; cellulae laminae exterioris validae, inferiores lineares 

 subflexuosae, valvularum rectangulares secus apicem quadratse, laminae 

 interioris pallidae tenerae. Calyptra parvula tenerrima mitraeformis 

 basi lacera apice stylo persistente coronata. 

 Dimensiones. Folia caulina inferiora lm.X "38m. ; perichaetialia 4*lm.X 

 l'5m. Cellulae medii folii 015m. Capsula l-9m.X'4m. ; valvulse 

 '45m. Pseudopodium ()'25m. 

 Hab. Ad saxa vulcanica montis ignivomi Tunguragua, alt. 11,000 ped. 

 Ab A. Wilsoni, Hook, f., foliis perichsetialibus basi plurinerviis et cap- 

 sula minus profunde fissa, valvulis 10 (nee 4-8), difFert. 



