OF ARTS AND SCIENCES. 356 



Cotyledon ? A somewhat similar apparently undescribed 



species, but the material insufficient for determination. From the 

 same region (7G9 SchaflTner) ; it was also distributed under 233 Parry 

 & Palmer, together with specimens of still another species with 

 broader leaves and the shortly calyculate flowers on long slender 

 pedicels. 



Cotyledon parviflora, Hemsl. In the San Miguelito Moun- 

 tains (775 Schaffuer). 



Sedum Palmerl Caulescent, erect and branching, glabrous and 

 glaucous: leaves thick, flattened, spatulate-obovate, 1 to 1 i inches lonof 

 by 9 lines broad (3 lines broad at base), rounded at the summit and 

 slightly apiculate : branches slender, bearing clustered racemes (4 to 

 6} an inch or two long : flowers deep orange, on short pedicels, the 

 narrowly lanceolate petals (2 or 3 lines long) but little exceeding the 

 sepals : carpels short, about as long as the slender styles. — At Gua- 

 juco, Nuevo Leon (2121), and in cultivation at Cambridge. Re- 

 sembling S. dendroideum, but of more slender habit and the flowers 

 pedicellate. 



Sedum ebracteatum, DC. In the Morales Mountains (774 

 SchaflTner), 



Sedum fuscum, Hemsl. In the San Eafael Mountains (778 

 Schaffner) ; 235 Parry & Palmer. 



Sedum parvum, Hemsl. In the Morales Mountains (777 Schaff- 

 ner) ; 234 Parry & Palmer. 



Sedum Liicbmannianum, Hemsl. Near San Miguelito (776 

 Schaflfner). 



Ammannia latifolia, Linn. At Sutherland Springs (331). 



CuPH.EA iEQUiPETALA, Cav. In the San Miguelito Mountains 

 (722 Schaff'ner), and at Guanajuato (Duges); 241 and 242 Parry & 

 Palmer. 



CuPiiyEA LANCEOLATA, Ait. f. (C. Zimopam, Roezl.) In the 

 Morales IMountains (721 Schaff'ner); and Guanajuato (Duges). 



Lythrum gracile, Benth. At Monterey (332), and near Morales 

 (653 Schaffiier) ; 245 Parry & Palmer. Typical L. alatum, Linn., 

 has not been collected in Mexico. L. Kennedianum, HBK. (40 and 

 299 Bourgeau, 142 Coulter, 243 Parry & Palmer, &c.), which has 

 been referred to it, is distinguished especially by its longer calyx (5 to 

 6 lines long), and the upper leaves less reduced. 158 Ghiesbreght, 

 from Chiapas, is L. alatum, var. lanceolatum, Torr. & Gray, and 

 140 Coulter (referred to L. Byssopifolia^ Linii.) is var. llnearifo- 

 LiuM, Gray, collected also by Gregg at Andabago. L. Hijssopifolia 



