OF ARTS AND SCIENCES. 99 



Spermacoce podocephala, Benth. At Corpus Christ!, Texas 

 (470), and at San Luis Potosi (836 and 1057 Schaffuer) ; 307 

 Parry & Palmer, and 100 Bourgeau, the latter referred by Hemsley 

 to aS'. verticillata, which is a stouter woody-based species, with the 

 flowers in close verticils as well as in terminal heads. 



Spermacoce subulata, Pav. At San Luis Potosi (837 Schaff- 

 ner) ; 231 ^ and 30G Parry & Palmer. 



RiCHARDSONiA SCABRA, St. Hil. At Lamar, on Copano Bay, 

 Texas (407). 



Galium proliferum, Gray. Guajuco, Nuevo Leon (411). 



Galium uncinulatum, DC. At Guajuco, Nuevo Leon (412), 

 and near Morales, San Luis Potosi (840 SchafFner, and 179 of his 

 previous collection), and the same as Botteri's Orizaba specimens 

 under several numbers (188, 945, and 1174 in Herb. Gray). The stem 

 is often nearly glabrous throughout. — Var. obstipum. (G. obsiipum, 

 Schlecht.) More pubescent throughout. From Lerios (413), the 

 Caracol Mountains (414), and Saltillo. This form is also common 

 in Texas. 886 Ghiesbreght, referred to the Peruvian G. canescens, 

 is the same. 



Galium Mexicanum, HBK. Near Guanajuato (Duges). G. 

 leucotrichum, Hemsl., appears to be identical with G. hypadenium, 

 Schauer. 



Galium Aschenbornii, Schauer. In the San Miguelito Mount- 

 ains, San Luis Potosi (841 SchafFner). 



Galium microphyllum, Gray. At Soledad (415) and at Lerios, 

 Coahuila, and near Morales, San Luis Potosi (492* Schaffner) ; 309 

 and 310 Parry & Palmer. 



Galium polyplocum. {Relhunium polyplocum, Hemsl, Diag. Pi. 

 Nov. 3. 53, and Bot. Biol. Centr.-Amer. 2. 63.) Near Morales, San 

 Luis Potosi (842 Schaffuer) ; 308 Parry & Palmer. 



Phyllactis pratensis, Benth. & Hook. At Morelia, Guana- 

 juato (Duges) ; popularly known as " Ucuares," and the tuberous 

 root a favorite article of food. 



Valeriana Tolucana, DC. In the Sierra Madre, south of Sal- 

 tillo C416) ; 312 Parry & Palmer. 



Valeriana sorbifolia, HBK. About San Luis Potosi (107 

 Schaffner), and Guanajuato (Duges) ; 311 and 1071 Parry «fe Palmer. 

 2133 Seemann, from the Sierra Madre, is the same. 



