166 PROCEEDINGS OF THE AMERICAN ACADEMY 



both sides, slightly ciliate on the margin, white-punctate above, 

 paler beneath, 1£ inches long, 1\ inches broad; petioles 1-3 inches 

 long, pubescent on the upper surface; cauline leaves smaller, 

 ovate, subcordate, more inclined to be pointed: stipules narrow, 

 either subentire or cleft into 2-3 linear acuminate segments: pe- 

 duncles glabrous: sepals lance-oblong, obtuse or acutish: petals 

 white lined with blue, smooth : valves of the mature capsule 4 

 lines long, twice the length of the sepals : seeds dark, smooth, 

 and shining. — Hills of Patzcuaro, Michoacan, November, 1890 

 (n. 3591). 



Xylosma Pringlei, Rob. (P. A. A., XXVI. 164). Additional 

 specimens of this species collected at Las Ganoas, San Luis Po- 

 tosi, June and July, 1891 (n. 3727), give the following supple- 

 mentary characters. The mature (?) fruit red, spherical, 2 lines 

 in diameter, slightly elevated in the spreading calyx, crowned 

 with the short styles, 1-2 seeded. 



Kosteletzkya digitata, Gray. Mr. Pringle's no. 3622, from 

 Tamasopo Canon, San Luis Potosi, collected in June, 1890, appears 

 identical with the type of this species discovered by Dr. Palmer on 

 the Yaqui River, Sonora, 1869. Mr. Pringle's specimen shows the 

 plant to be erect and over two feet in height. The cauline leaves 

 are divided into three linear-oblong, subequal lobes, and have in 

 addition two smaller auricles at the base; the leaves of the branches 

 are simply linear, or have auricles of varying length at the base. 

 The flowers in a dried state appear to be white with a yellow tint. 



Casimiroa edulis, Llav. & Lex. Mr. Pringle's no. 3861, from 

 near Guadalajara, represents a form of this species with rather nar- 

 row sessile leaflets but three in number. 



iEscHYNOMENE petr^ea. A tall erect annual, 4-5 feet in 

 height: stem subsimple, slender, finely striate, nearly smooth: 

 leaves alternate, appressed-silky especially when young, 2-3 inches 

 long; leaflets 15-25 pairs and an odd one, oblong, obtuse, sharply 

 mucronate, 3-4 lines in length: stipules linear, very acute, 1-3 

 lines long: inflorescence subterminal or the flowers crowded on 

 short, very glandular-pubescent lateral axes; bracts very small, 

 ovate, acute, very pubescent, deciduous: pedicels short, 2-3 lines 

 in length, they and the calyx glandular-pubescent or hirsute: 

 corolla yellow, striped with purple: pod stiped, very deeply parted 

 into 2-4 almost semicircular segments, pubescent especially on the 

 edges and at the nodes; segments thin, flat, 3 lines in diameter, 

 somewhat veiny, but the veins not prominent. — Rocky hills near 



