EOSACEtE. 35 



three others may be expected to occur within our limits, as they have been found in the 

 southern part of New Mexico and Arizona. 



[i. p. 378.] Rosa montezumce, H, B. K. 

 S. Watson, loc. cit. p. 351, states that there can be little doubt that this is a variety 

 of P. canina, Linn., which exists only as a naturalized plant in North America. 



[i. p. 380.] 1. Cotoneaster denticulata, H. B. K.; S. Wats, in Proc. Am. Acad, 

 xvii. p. 354. 



Noeth Mexico, in the Sierra Madre, south of Saltillo (Palmer, 330). 



[i. p. 380.] 1*. Cotoneaster nervosa, Dene, in Nouv. Archives du Mus. x. 

 p. 177. 



Mexico. 



SAXIFRAGACEtE. 



[i. p. 384.] 4. Philadelphia serpyllifolins, A. Gr. ; S. Wats, in Proc. Am. 

 Acad. xvii. p. 354. 



Noeth Mexico, in the Sierra Madre, south of Saltillo (Palmer). 



CRASSULACEiE. 



[i. p. 392.] 34*. Cotyledon SChaffheri, S. Wats, in Proc. Am. Acad, xvii. 

 p. 354. 



Noeth Mexico, mountains around San Luis Potosi (Sckajfher, 768). 



[i. p. 398.] 17*. Sedlim palmeri, S. Wats, in Proc. Am. Acad. xvii. p. 355. 

 Noeth Mexico, Guajuco, Nuevo Leon (Palmer, 2121). 



[i. p. 399.] 20*. Sedum Stelliforme, S. Wats, in Proc. Am. Acad. xx. p. 364. 

 New Mexico. — Noeth Mexico, Huachuca Mountains (Lemmon). 



HALORAGEiE. 



[i. p. 401.] 1. Callitriche heterophylla, Pursh, Fl. Am. Sept. i. p. 3 ; A. Gr. 

 Manual, ed. 5, p. 429 ; S. Wats, in Proc. Am. Acad, xviii. p. 154. 

 Callitriche asagrcei, Hegelm. Monogr. Callit. p. 54, t. 3. fig. 9, t. 4. fig. 1. 



New Yoek and Illinois southward. — Noeth Mexico, near Morales, San Luis Potosi 

 (Schqffiner). Hb. Kew. 



[i. p. 401.] 1*. Callitriche austini, Engelm. ; A. Gr. Man. Bot. Northern 

 U. S. ed. 5, p. 428 ; S. Wats, in Proc. Am. Acad, xviii. p. 154. 



New Yoek to Illinois and Missouei southward. — Noeth Mexico, near Morales, San 

 Luis Potosi (Schaffner). — And in South Ameeica. 



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