348 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Stereophyllum (Moneuruim) perpusillum C. Muell, sp. nov. 



Monoicum caespituli latissimi perpusilli taxicaulioidei pallide 

 virides nitiduli intricati ; caulis perbrevis vage ramosus, ramis 

 pusillus tenuibus complanatulis aetate albescenti-viridibus madore 

 parum turgidulis ; folia caulina minuta in axi crassuisculo pallide 

 virente laxe horride conferta humore regulariter patula plagio- 

 thecoidea, e basi angustiore ad alam unicam cellulis nonnullis 

 parenchymaticis pellucidis majusculis ornata anguste oblongo- 

 lanceolata breviter acuminata acutata integerrima, nervo angus- 

 tissimo mediano viridi parum carinata-concava, e cellulis parviis 

 longiusculis angustiusculis laxiusculis mollibus chlorophyllosis 

 reticulata ; perichaetialia pauca parum minore apressa longius 

 acuminata ; theca in pedicello brevi rubente inclinata aetate 

 nutans parva oblonga sub ore valde coarctata fusca, operculo 

 breviter conico ; peristomium pro capsula robustum, dentibus 

 externis angustis lutescentibus cristatis, internis minutis ciliatis 

 rudimentariis. 



Habitato America-centralis, Yucatan, in Sylvis proxe Izamal, 

 1897(340.) 



Ex habitu ad Stereophyllum Peruvianum (Mtze. ) accedens, sed 

 haecce species foliis multo laxius reticulatis magis acuminatis 

 basi ad alar utrinque parenchymaticis longe differt. 



Adiantum tenerum Swz. Prod. 135. Culantrillo. 



" A growth 3 feet high, in a cave about one mile northwest of 

 Izamal" (1071). At the cenote of Kickil (Schott, 778}. Quinta 

 Encalada, Merida, March 26, 1865 (Schott, 92*). 



ADIANTUM TRICHOLEPIS Fee. 



At the ruins of Uxmal, Sept. 15, 1866 (Schott, 687}. Cave near 

 Calcehtok, March u, 1890 (Stone, 263, in Herb. Acad. Sci., 

 Phila.). 



ANEIMIA ADIANTIFOLIA Swz. 



At Teocali, and on the ruins in Mayapan, Feb. 28, 1866 

 (Schott, 651). 



Aneimia bipinuata Moore. 



Cenote ya Usil, Hacienda de Mucuych6 Oct. 20, 1865 ; and 

 Cenote de Uayma, March, 1866 (Schott, 677). 



ASPIDIUM TRIFOLIATUM Swz. Syn. 43. 



" Growth 3 feet high, abundant in a large cave at Buena Vista 

 Xbac, November" (994). Cenote de Sta. Ana, Valladolid, 

 March, 1866 (Schott, 782, immature specimens from same local- 

 ity, 780} Cave near Calcehtok, March u, 1890 (Stone, 261, in 

 Herb. Acad. Sci., Phila.). 



*Determined by Mr. George E. Davenport. 



