570 PROCEEDINGS OF THE AMERICAN ACADEMY. 



peduncles Blender, in anthesis erect, 0.5 to 1 <lm. long, soon Btrongly de- 

 jected: calyx white-stellate, with L0 long linear-subnlate divisions: 

 corolla S to 1 cm. broad, plicate, 5-angled, violet or violet and white : 

 filaments Bhort, one of them twice or thrice exceeding the others. 5 nun. 

 long; anthers broad-lanceolate, blunt, 5 mm. long: Btyle In to 12 mm. 

 long, glabrous: fruit said to he yellow. — hi rango, rare in crevices of 

 rocks, lion Mt., &C., near Durango, July. 1896 ( Edw. Palmer, no. 847) : 

 M xjco, Mount Zacoalco, duly 10, IM'.J or I.sGti (ffahn, in.. 548); San 

 Juan del Rio, duly 1 1. 1896 (0. G. Pringle,no. 7202): Gi inaji lto, 

 in fields, 1895 (.1. Dugea). Related, apparently, to S. somniculentum, 

 Kun/e, hut differing in its clOBer whitish pubescence, longer petio 

 longer more slender peduncles, and generally blunter leaves. 



S. (Polymeris) nocturnum. A woody climber with the habit oi 

 .S". lentum, Cav. : branches glabrous, or minutely Btellate-puberulenl at 

 tips: leaves solitary or geminate, ovate, 2.5 to 5 cm. Ion- . '2 to ;; cm. 

 wide, with acute or obtuse tips, rounded or acutish below to Blender 

 petioles 1 cm. or less in length, subentire, glabrous ou both faces, or 

 sparingly puberulent when young : peduncles solitary or in 2's, 1 to 2 em. 

 long, bearing solitary nocturnal blue flowers: calyx, in anthesis sparingly 

 puberulent, later quite glabrate, a shallow cup with 10 lance-subulate 

 teeth; corolla minutely and sparingly puberulent without, 12 nun. hiu'i : 

 berry apparently red, glabrous, 1 cm. in diameter. — GuERBERO, low 

 sandy soil, Acapulco, Jan., 1895 (Edw. Palmer, no. 533): O.yxa. \. 

 river-bed above Tehuantepec, Jan. 10, 189G (Ed Seler, no. 1625). 



S. (Cryptocarpum) macroscolurn. Plant with the habit of 

 S. rostratum, Dunal : stem puberulent, slightly glandular above, an 

 with rather scattered yellowish straight stout spines 1 to 1.75 cm. long: 

 leaves very deeply pinnatilid, the segments again cut into rounded lobes, 

 sparingly pilose above or glabrate, armed with long stout spine-: calyx 

 hirsute, becoming glabrate, armed with several long (1.5 cm.) slender 

 spines and many shorter finer ones, deeply cut into lanceolate lobes : 

 corolla as in S. rostratum : 1 stamens Bubequal, 8 or 10 mm. lone, the 

 other larger, arcuate, 18 mm. long: fruiting calyx, including the persist- 

 ent lobes, 15 to 18 mm. long. — Oaxaca, near the town of Oaxaca, 

 Sept. 19. 1895 (L. C Smith, no. s! h, Nov. is. L895 (Ed. Seler, no. 

 L894) : originally collected by Haenke, presumably between A.capulco 

 and the City of Mexico. 



S. (Nycterium) azureum. Stem frutieose, the young branches, 

 with peduncles pedicel-, and calyx, cinereous with dense but fine stellate 

 pubescence ; the branches sparingly beset with remote straight slender 



