OF ARTS AND SCIENCES. 113 



Fkaxinus cuspidata, Torr. In the mountains east of Saltillo 

 (79G). 



FuAxiNus piSTACLEFOLiA, Torr, At Parras, Coahuila (797), 

 with nearly the typical foliage though quite variable even in the same 

 specimen. Other specimens from the same locality (798) have the 

 leaves narrowly lanceolate, long-acuminate, attenuate at base, and 

 coarsely serrate. 



Fraxixus viridis, Michx., var. Berlandierana, Gray. At 

 Monterey, Nuevo Leon; at San Luis Potosi (900 Schaffner) ; 572 

 Parry & Palmer. 



FoRESTiERA ANGUSTIFOLIA, Torr. With leaves varying in form 

 and size; at Uvalde (801), Eagle Pass (802), Corpus Christi Bay 

 (803), and near Laredo, Texas (804), and at Monterey, Nuevo Leon 

 (799, 800). 



Thevetia Yccotli, DC, var. glabra, DC. At Guanajuato 

 (Duges) ; popularly known as " Frayle." 



Apocyxum cannabinum, Linn. In the Caracol Mountains, Coa- 

 huila (80G) ; referred to A. androscemifulium. 



EcHiTES (EuECHiTEs) CouLTERi. Low (about a foot high), 

 finely pubescent or becoming nearly glabrous : leaves oblong-lanceo- 

 late, narrow at base and rarely slightly cordate, acute, 1 to 1^ inches 

 long, on very short petioles : inflorescence glabrous ; peduncles shorter 

 than the leaves, 2-7-flowered ; bracts and calyx-lobes linear-subulate, 

 acuminate, the latter nearly half the length of the corolla-tube and 

 recurved ; corolla 8 to 10 lines long, the lobes about equalling the 

 cylindrical tube, which is pubescent within : anthers lanceolate, acumi- 

 nate, cordate at base : follicles glabrous, 2 to 4 inches long, torulose, 

 the seeds solitary or in pairs at the (2 to 4) nodes and comose at the 

 summit. — In the Sierra Madre, south of Saltillo (805); 987 Coul- 

 ter. 



Plumiera ? A fruiting specimen of what is cultivated at 



Monterey as the " Cow Tree." Follicles G to 9 inches long by an inch 

 wide or more ; leaves narrow. 



Macrosipiioxia Berlandieri, Gray. In the mountains on the 

 west side of Saltillo (807), as well as at Monclova and in the mount- 

 ains north of it. Flowers cream-white and fragrant ; popularly 

 known as " Flor de San Juan." 



Macrostphoxia hypoledca, Muell. At Guanajuato (Duges), 

 with the same popular name ; 574 Parry & Palmer. 



Philibertia cynanchoides, Benth. & Hook. At Laredo, on 

 the Rio Grande (821). 



VOL. XVIII. (n. S. X.) 8 



