NO. 4 MEXICAN MOSSES THERIOT 35 



BRACHYTHECIUM ALBULUM Besch. in Card. Rev. Bryol. 37- 66. igio 



jMorelia: Bosque San Pedro (4582). 



I have seen only a very incomplete specimen of the type. The 

 present specimen seems to differ from it by the longer and more 

 slender acumen of the leaves. 



BRACHYTHECIUM LANCEOLIFOLIUM Card. Rev. Bryol. 37: 66. 1910 



Puebla: Cerro Guadalupe (796) ; Hacienda Alamos (4760) ; Rio 

 San Francisco (5003). Morelia: Loma Santa Maria (5089). Distr. 

 l<^ederal : Mixcoac (9453). Valle de Mexico {Bro. Amable) : Santa 

 Teresa (1339) ; Contadero (1364) ; Tizapan (1612). 



BRACHYTHECIUM LANCEOLIFOOLIUM Card. var. GRACILE Card. Rev. 

 Bryol. 37: 66. 1910 



Puebla: Hacienda Batan (935) ; Hacienda Alamos (4799). More- 

 lia: Campanario (7452). 



BRACHYTHECIUM CLADONEURON (C. M.) Par. Ind. Bryol, 132. 1894 

 Hypniim cladoncnron C. M. Linnaea 38: 652. 1874. 

 Puebla: Hacienda Alamos (4696). 



BRACHYTHECIUM COMTIFOLIUM (C. M.) Jaeg. 



Ilypmtin conitifoliitm C. M. Linnaea 38: 653. 1874. 

 Valle de Mexico : Desierto {Bro. Amable 1238). 



BRACHYTHECIUM TROCHALOBASIS C. M. Bull. Herb. Boiss. 5: 238. 1897 

 Puebla: Esperanza (4729). Morelia: Cascade de Coincho (4713) ; 

 Carindapaz (7951) ; Santa Clara (4886). 



BRACHYTHECIUM FLEXIVENTROSUM (C. M.) Jaeg. 



Hypniim flcxiventrosiim C. M. Linnaea 38: 653. 1874. 

 Morelia: Cerro San Miguel (7546) ; Campanario (7940) ; Cerro 

 Azul (4532, 4541, 4554, 4788). Distr. Federal: Tlalpam (9498). 

 Valle de Mexico {Bro. Amable) : Desierto (1222 p. p.) ; San Juanico 

 (1261). 



Several of these specimens oscillate between this species and the 

 preceding one. In their long and slender acumen and flexuose costa 

 they tend toward B. flexiventrosinn; but the habit, the short nerve, and 

 the short pedicel (i cm. or less) bring them nearer to B. trochalo- 

 basis. I am not far from believing that these two species should 

 be united into one. 



