OF ARTS AND SCIENCES. 185 



crose somewhat recurved tips very dark purple, almost black; the 

 inner segments shorter, more narrowed below, and with a broad 

 yellowish minutely granular fold in the middle, the obtuse tips 

 purple but not so dark as the outer ones : staminal column very slen- 

 der, over 3 lines in length; anthers spreading, about 2 lines long: 

 the six branches of the style with terminal capitellate stigmas. — 

 Collected by Mr. Pringle near Patzcuaro (unnumbered and not 

 distributed). The description of this attractive little species has 

 been drawn from specimens cultivated and kindly communicated 

 by Mr. Edward Gillett, of Southwick, Massachusetts. 



Tradescantia angustifolia. A very slender grass-like spe- 

 cies, 6 inches in height : roots of numerous delicate fibres : stems 

 slender, glabrous, somewhat decumbent: leaves narrow, linear, 

 very acute, 1-2 inches long, a line or less in breadth, glabrous 

 except the ciliate margins of the sheaths: flowers small, about 

 3 lines in diameter, some solitaiy, but for the most part um- 

 bellately grouped at the ends of terminal peduncles (1-2 inches in 

 length): the subtending bracts much shorter than the pedicels: 

 sepals ovate, acute : petals roseate : stamens very different, the 

 longer ones with smooth bent filaments, the broadly dilated some- 

 what horseshoe-shaped connective bearing the small orange-colored 

 anther cells in a transverse position; in the shorter stamens the 

 anthers larger, pinkish, the connective much less developed, and the 

 cells parallel or nearly so : seeds triangular, brown, and somewhat 

 radially rugose. — Thin soil of limestone ledges, Las Canoas, San 

 Luis Potosi, August, 1891 (n. 3902). 



