382 PROCEEDINGS OF THE AMERICAN ACADEMY. 



XVII. 



CONTRIBUTIONS FROM THE GRAY HERBARIUM OF HARVARD 

 UNIVERSITY, NEW SERIES, NO. VII. 



FURTHER NEW AND IMPERFECTLY KNOWN PLANTS 

 COLLECTED IN MEXICO BY C. G. PRINGLE IN THE 

 SUMMER OF 1893. 



By B. L. Robinson and J. M. Greenman. 



Presented April 11, 1894. 



Polygala puberula, Gray, var. ovalis. Low, 1-3 inches in 

 height : leaves all oval or slightly obovate, very obtuse, apiculate, 6-8 

 lines long, half to two thirds as broad, purplish beneath : racemes 

 scarcely exceeding the leaves, more closely flowered than in the type ; 

 pedicels ascending. — Collected in damp hollows of hills near Guada- 

 lajara, Jalisco, 22 May, 1893 (no. 4472). 



Anoda hastata, Cav. A form apparently of this species, but 

 with flowers orange-yellow instead of purple, has been collected by 

 Mr. Pringle in the barranca of Tequila, 2 October, 1893 (no. 5454). 

 Except the color, however, no characteristics in the specimens in 

 question form satisfactory specific or even varietal distinctions. 



Sida caudatifolia. Stem terete, over two feet in height, tomen- 

 tulose, and villous with spreading white hairs leaves ovate, cordate, 

 serrate-dentate, long-attenuate, somewhat pruinous-pubescent and soft 

 to the touch above, paler and velvety tomentose beneath, about 

 9-nerved, 5 inches long, 2-3 inches broad, upon villous petioles of 

 nearly equal length ; floral leaves lanceolate to linear : lower flowers 

 axillary and solitary ; the upper paniculate ; pedicels 9-18 lines long : 

 calyx slightly angulate, densely pubescent, not accrescent; segments 

 ovate, acuminate : petals yellow, 4-5 lines long : carpels 5, slightly 

 and bluntly beaked at the apex. — Collected in the barranca of 

 Tequila, 13 October, 1893 (no. 5445). 



Dalea filiciformis. Root thick, fusiform, yellow : stems sev- 

 eral, much branched, shrubby below, glandular-punctate above : leaves 

 delicate, 8-10 lines in length, 17-37 foliate ; leaflets very small, •§ line 



