OF ARTS AND SCIENCES. 43 



EcHiNOPTERTS Lappula, Juss. A shrub 3 to 5 feet high, with 

 an abundance of golden yellow flowers. The plant diflters from Jus- 

 sieu's description only in the acute or acutish instead of acuminate 

 leaves, and perhaps in the indumentum of the ovary. The cocci of 

 the mature fruit, which was not known by him, are 2 lines long, ovate, 

 acute, densely pubescent, carinate with a row of stout subspinulose 

 pubescent bristles, and the whole dorsal surface covered more or less 

 densely with similar bristles. The seed is oblong-ovate, with a thin 

 membranous testa, the cotyledons curved and somewhat unequal, and 

 the radicle short and straight. Rocky mesas near Guaymas. (181.) 

 HiR^A. MACROPTERA, DC. " Matanene " ; the leaves used in poul- 

 tices for bruises and sores. Muleje. (19.) 



Janusia Californica, Benth. In mountain ravines about Guay- 

 mas. (2G3.) 



Tribulus grandiflorus, Benth. & Hook. "Mai de ojos"; the 

 pollen is said to be injurious to the eyes. Common about Guaymas. 

 (177, 225.) 



Tribulus C^alifornicus, Watson. Guaymas. (651.) 

 Tribulus maximus, Linn., var. ? Scarcely or not at all hispid, 

 the pubescence short and mostly appressed : flowers smaller ; calyx 

 (1^ lines long) usually deciduous : fruit smaller ; nutlets about 8, 

 more strongly tuberciilate. — About Guaymas. (1^7.) 



Fagonia Californica, Benth. Los Angeles Bay. (546.) 

 Guaiacum Coulteri, Gray, — at least as to Thurber's specimens 

 from Sonora. It is probably also the G. parvifoUum oF Planchon 

 (Gray, PI. Wright. 1. 29; G: Planchoni, Gray, Proc. Am. Acad. 22. 

 306, where this name is proposed on account of a supposed earlier 

 '• G. parvifolium, Engelm.," by which G. angusti folium, Engelm., must 

 have been meant), of which there is a fragment in Herb. Gray. A 

 shrub or small tree, 10 to 15 feet high and 15 inches in diameter, on 

 hills and mesas about Guaymas, where it is known as " guayacan." 

 The flowers are dark purplish blue and very fragrant ; filaments 

 naked. (113.) 



VisCAiNOA GENicuLATA, Greene. A weak shrub, 5 to 8 feet 

 high ; flowers white. The genus is nearly allied to Chitonia. Muleje 

 and Guaymas. (27.) 



Erodtum Texanum, Gray. Los Angeles Bay. (566.) 

 Triphasia trifoliata. DC. Cultivated at Guaymas. (649.) 

 BuRSERA MTCROPHYLLA, Gray. " Torote bianco"; 6 to 12 feet 

 high ; the bark used for tanning. Common on the mesas about 

 Guaymas. (163.) 



