NO. 4 



MEXICAN MOSSES THERIOT 



37 



BRACHYTHECIUM INTEGRIFOLIUM Ther., sp. nov. 



Distr. Federal : Tlalpam (9499) . 



Sterile. Caulis repens, radiculosus, sat regulariter pinnatus, raniis 

 inaequalibus, 3-4 mm., usque 10 mm. longis, patulis, attenuatis. Folia 

 caulina sicca et humida erecto-appressa, e basi decurrente latissime 

 cordato-ovalia in acumen longiusculum, patulum, acutum sat subito 

 constricta, baud plicata, marglnibus planis, integerrimis, 1.6- 1.7 mm. 



Fig. 19. — Bracliytheciitin iufci/rifoliinii Ther. i, 2, 3, stem leaves; 4, median 

 cells ; 5, basal and alar cells ; b, branch leaves ; 7, acumen. 



longa, 0.8-0.9 "^'''^- ^^ta, costa ad § evanida ; rete pellucido, cbloro- 

 ])bylloso, cellulis linearibus, parietibus tenuibus, 35-45 /"• X 5-6 /a, cellu- 

 lis basilaribus et alaribus laxioribus, breviter rectangularibus. Folia 

 ramea minora, secunda, subfalcata, i mm. x 0.5 mm. Caetera ignota. 

 In size and babit like B. hylocomioides Card., but that species bas 

 denticulate non- falciform leaves and looser areolation. It suggests 

 also B. reflexum Starke, but is easily distinguished by its entire leaves, 

 with the nerve reaching only to the base of the acumen. 



BRACHYTHECIUM CORBIEREI Card. Rev. Bryol. 38: 42. 191 1 



Valle de Mexico {Bro. ^Unable) : Desierto ( 1222 p. p., 1441) ; Rio 

 Frio (1692, 1703. 1706) ; Contadero (1307). 



The last number (1307) represents a form with long, llexuose 

 stems, irregularly ramose, with long, slender, almost flagelliform 

 branches. 



BRACHYTHECIUM PLUMOSUM (Sw.) Bry. Eur. 



Puebla: Huejotzingo (4856). Morelia: Loma Santa Maria 

 (4896). Valle de Mexico {Bro. Amahle) : Desierto (1245, 1616, 

 1640); Contreras (1668). Hidalgo: El Chico (1586). 



