OF ARTS AND SCIENCES. 163 



Agave Victori^-regin^, Moore. On gravel-banks in the same 

 locality (Palmer), and iu cultivation at Cambridge, where it has flow- 

 ered (Gard. Chron. 2. 18. 841, fig. 149). Flowering stalk over 10 

 feet high, the flowers by threes in a very dense spike : perianth 9 

 lines long, exceeding the ovary : filaments 15 lines long, inserted on 

 the middle of the very short tube. 



DioscoREA ? At Guanajuato (Duges). A staminate speci- 

 men, with small hexandrous flowers in simple short-pedunculate ra- 

 cemes shorter than the cordate acuminate leaves : finely pubescent. 

 Known as " Camote del Cerro." 



DioscOREA ? At Guanajuato (Duges). Staminate speci- 

 mens of a very delicate slender glabrous species, with minute green- 

 ish 3-androus flowers in short simple racemes rather exceeding the 

 small cuspidate oblong-cordate leaves. 



Smilax Bona-nox, Linn. (S. tamnoides, Gray, Manual.) A form 

 with auriculate-lanceolate acuminate leaves, subcordate at base, 3-5- 

 nerved. Collected by SchafFner, but the ticket lost. 



Yucca angustifolia, Pursh, var. mollis, Engelm. ; with the 

 narrow (2^ to 4 lines wide) and rather rigid pungent leaves of var. 

 elata. At Uvalde, Texas (1312). 



Yucca rupicola, Scheele, var. rigida, Engelm. At Monclova, 

 Coahuila. Flowering stem 8 to 10 feet high ; leaves 15 to 18 inches 

 long by 4 or 5 lines broad, scarcely pungent : capsules 2 to 2| inches 

 long, acuminate, the valves not splitting at the apex : seeds 3 Hnes 

 broad. Known as " Amole." 



NoLiNA LiNDHEiMERiANA, Watson. At Sutherland Springs (1316). 



NOLINA HUMiLis, Watson. Near San Miguelito, San Luis Potosi 

 (502 Schaffner) ; 875 Parry & Palmer. Palmer also collected in the 

 Sierra Madre, south of Saltillo, a staminate specimen with the flower- 

 ing stem and inflorescence (a foot high) coarsely rough-pubescent, 

 the bracts narrower at base, longer and more attenuate, and the leaves 

 more or less rough on the back. This may be the same as 874 Parry 

 & Palmer (the specimen in the Gray herbarium insuflicient for deter- 

 mination), which Mr, Baker has separated under the name Beaucarnea 

 Watsoni. 



Dasylirion glaucophyllum, Hook. (?) A fruiting specimen 

 not positively referable to any of the described species. Leaves 4 

 feet long, somewhat glaucous at base, the margins between the teeth 

 only very minutely serrulate, and the thin extremity not splitting into 

 threads but dying and breaking off ; base 2i inches wide • flowering 

 stem 10 feet high, the numerous crowded erect panicles shorter than 



