182 BULLETIN DE L'HERBIER BOISSIER. (12) 



31. Bryum (Sclerodictyon) perappressum n. sp. ; Bryo 

 julaceo simillimum ; folia caulina siccitate el humore dense appressa, 

 e basi parum angustiore laxe reticulala ssepius cum nervo purpuras- 

 cente in laminam oblonge o va tarn breviter et recurvulo-acuminalam 

 ad acumen tenuiter denticulatamexeuntia cymbiformi-conca va, nervo 

 latiusculo flavido ante apicem dissolu to leviter exarala, e cellulis 

 angustis longiusculis densissimis in mebranam pallidam quasi con- 

 flatis basin versus laxioribus pellucidis reticulala. Caetera nulla. 



Habitatio. Chemal, Sept. 1876, cum Barbula brunneola (N° 100) associa- 

 tum, verosi militer alpinum. 



32. Bryum (Argyrobryum) subcorrugatum n. sp.; dioicum; 

 Bryo argenteo simillimum; caulis tenuis teres; folia siccitate et 

 bumore densissime imbricata minutissima tenera, e basi truncata 

 fibrosa in laminam cymbiformi-oblongam obtusatamsed apiculobre- 

 vissimo hyalino reflexo terminatam producta, margine ubique per- 

 fecte erecta integerrima, nervo angustissimo striaeformi chryseo 

 apice hyalino evanido levissime exarata, e cellulis pro foliolo amplis 

 Iaxis basi dilule coloratis superne hyalinis reticulala; perichsetialia 

 vix majora sed breviter acuminata stricta; theca in pedunculo Ion- 

 giusculo tenui flavo-rubente per laqueum pendula minuta angusta 

 cylindrica ochracea, operculo conico acuto rubro nitido, annulo 

 latiusculo; peristomium brève normale, intern um luteum nee 

 Mans, ciliolis binis arete adhœrenlibus nodosiusculis brevibus inter- 

 posais. 



Habitatio. Mazatenango, Coli. N° 123, 124; Quezaltenango, Coli. No 98, 

 120; sub Bryo corrugato Hpe. nee Emodi ! 



33. Bryum (Argyrobryum) Guatemalense Hpe. in sched. 



1868; dioicum; caulis perpusillus, ramulis tenuibus teretibus anguste 

 clavatulis perbrevibus chryseis; folia minuta elegantissime dense 

 imbricata ; e basi breviter angustissime decurrente unduiatula in 

 laminam late ovatam Cochlea riformi-coneavam producta, acumine 

 brevi tenui luteo tenerrime denticulalo acuto flexuoso recurvo raptim 

 terminata, margine ubique erecta, nervo angustissimo subobsoleto 

 in acumen percurrente levissime exara ta, e cellulis majusculis laxius- 

 culis pellucidis dilute luleis reticulata; theca in pedunculo longius- 

 culo flavo-rubente tenui inclinata horizontalis, e collo brevi angus- 



