OF ARTS AND SCIENCES. 189 



Lygodium Mexicanum, Presl. On the route from San Luis 

 Potosi to Tampico (1159 Palmer, in 1878). 



Ankimia Mexicana, Klotzsch. In the Caracol Mountains, Coa- 

 huila (1438) ; also a i'aw specimens at Guajuco, Kuevo Leon. 



Aneimia tomentosa, Swartz, var. fulva, Hooker & Buker, In 

 the Escobrillos Mountains (945 Schaffuer). 



Aneimia adiantifolia, Swartz. On the route from San Luis 

 Potosi to Tampico (IIGO Palmer, in 1878). 



EoTRYCHiuM ternatum, Swartz. Well-developecl, nearly typical 

 specimens, in the mountains of San Miguelito (944 Schaffner). 



BOTUYCHIUJI ViKGiNiANUM, Swartz. With the last (943 SchafF- 

 ner). 



Equisetdm ROBUSTUii, Al. Braun. In swamps near Morales (964 

 Schaffner) . 



Selaginella rupestris, Spring. In the mountains near San 

 Luis Potosi (933 Schaffner). 



Selaginella lepidopiiylla, Spring. At Monterey (1439), So- 

 ledad (1440), and in the Escobiillos Mountains (935 Schaffner). 



Selaginella cuspidata. Spring. At Soledad, Coahuila (1441), 

 and in the San Miguelito Mountains (934 Schaffner). 



Selaginella pilifera, A. Braun. In the region of San Luis 

 Potosi (1008 Parry & Palmer). This is given on the authority of 

 Mr. Baker in a letter to Dr. Parry. The same letter gives n. 1009 as 

 S. cuspidata; but in the set of specimens at New Haven, n. 1009 is 

 an Acrostichum. 



Selaginella saccharata, A. Braun. From the San Kafael 

 Mountains (936 Schaffner) ; so named at Kew. 



Marsilia Mexicana, A. Braun. In the region of San Luis 

 Potosi (1010 Parry & Palmer). So named by Mr. Baker. 



Weissia longirostris, Schwregr. (?) At Guajuco, Nuevo Leon 

 (Palmer). 



Ceratodox purptjreus, Brid. Mexico (Palmer). Not purple. 



Trichostomum strictum, Bruch. (?) At Guajuco (Palmer). 

 Differing in its perichaetial leaves and longer operculum. 



Trichostomum Schlimii, Muell. (?) Mexico (Palmer). 



Barbula cirrhata, Muell. In the Sierra Madre, south of Sal- 

 tillo (Palmer). 



Barbula obtusissima, Muell. Mexico (Palmer). 



Ptychomitrium serratum, Schimp. Mexico (Palmer). 



Brydm argentecji, Linn. In the Caracol Mountains, Coahuila 

 (Palmer). 



