OF ARTS AND SCIENCES. 155 



plurimis laxe crinitis. — Caulis subpedalis. Folia semi - sesquipollica- 

 ria. Corolla sesquipoUicaris. — Most allied perhaps to H. phce^iiceus ; 

 but the leaves are all rounded and obtuse, mostly lobed, and resem- 

 bling those of a Ribes, the corolla much exceeding the calyx and invo- 

 lucel, &c. The young stems and petioles are slightly pubescent ; the 

 leaves perfectly glabrous. 



12. GossYPiUM, foliis omnibus integris cordato-ovatis, Benth. 1. c. — 

 Like the specimens noticed by Bentham from the same district, desti- 

 tute of fruit. The leaves of one specimen, however, begin to show 

 lobes. It is probably a cultivated Cotton run wild. 



13. Melochia tomentosa, Linn. " A common West Indian 

 and Central American species, of which this is probably the northern 

 limit." 



14. Kallstrcemia grandiflora, Torr. in PI. Wright. 1, p. 28 : 

 var. DETONSA, Gray. 



15. Galphimia angustifolia, Benth. Bot. Voy. Sulph. p. 9, t. 5. 

 Apparently G. linifolia, Gray, Gen. 111., is the same species, which 

 extends across the continent on the southern border of the U. S. 



16. Karwinskia Humboldtiana, Zucc. ; Gray, PI. Wright. 1, 

 p. 32. ( = Berland. coll. no. 820, 889, 689, 906, 2340, 2359, 

 1230, &c.) 



17. Mattenus phtllanthoides, Benth. Bot. Voy. Sulph. p. 54. 

 This has also been found on the eastern side of the continent, on the 

 lower part of the Rio Grande, and at Key West. 



18. Cardiospermum molle, H. B. K. ? A single specimen with- 

 out fruit. 



19. Cardiospermum? sp. nov. A shrubby species, with the habit 

 of Bentham's Cardiospermum toi'tuosum., from the same district, but 

 wholly glabrous and with a different foliage ; the fruit unknown, and 

 therefore the genus uncertain. 



20. DoDON^A viscosA, Linn. ? Destitute of flowers or fruit. 



21. Bursera microphtlla (sp. nov.): foliolis 14-16-jugis cum 

 imparri 2-3 hn. longis oblongo-linearibus seu oblongis obtusis sessili- 

 bus in rhachi superne marginata ; pedunculis 2 - 3-floris brevibus. — 

 (In Sierras Tule, Sonora, leg. A. Schott, ex herb. Torr.) Frutex 

 rigidus. Folia ad apicem ramulorum brevissimorum conferta. Flores 

 hermaphroditi, an polygami ? Petala 5. Stamina 10. Discus 5-lobus. 

 Ovula ex cl. Torrey in loculis solitaria suspensa. Cotyledones contor- 

 tuplicatissima. — Mr. Schott collected this with a few flowers and young 

 fruit. Mr. Xantus, with fruit only, which is that of a Bursera. 



