572 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Oestrum flavescens. Shrub, about 1 m. in height : stems covered 

 with a light grayish bark, the young shoots finely pubescent : leaves 

 ovate to ovate-elliptic, 3 to 5 cm. long, one half to two thirds as broad, 

 obtuse, narrowed at the base into a slightly winged petiole (5 to 10 mm. 

 in length), more or less pubescent on either surface, especially on the 

 veins beneath : inflorescence subracemose at the ends of the branches ; 

 peduncles and sometimes the pedicels apparently adnate to the base of 

 the petioles: calyx about 5 mm. long, 5-lobed; tube glabrous or slightly 

 puberulent; lobes triangular-ovate, a little irregular, 1 to 1.5 mm. long, 

 acute, tomentulose at the tips: corolla 2 to 2.5 cm. long, reddish-yellow, 

 tubular, gradually arapliated above, constricted at the throat, glabrous; 

 lobes broadly ovate, about 2 mm. long, obtuse, pubescent along the 

 margins, reflexed : stamens included, glabrous: immature fruit glabrous. 

 — Collected by C. G. Pringle, in lava fields near Cuernavaca, State of 

 Morelos, altitude 1500 m., 11 May, 1898, no. G832. 



In general appearance this species bears a superficial resemblance to 

 tlie Guatemalan C Regelii, Planch. Fl. Serres, ix. t. 946; but from the 

 latter Mr. Pringle's plant is amply different, in the less acuminate 

 leaves, the shorter and broader calyx-lobes, and finally in the longer 

 and more slender corollas. 



PiTHECOCTENiUM BDCCiNATGRiuM, DC. Prodr. ix. 195. Blf/nonia 

 huccinaforia, Mairet in DC. 1. c. ; Hemsl. Biol. Cent.-Am. Bot. ii. 490; 

 Hooker in Bot. IMag. t. 7516. f 



In 1878 Parry and Palmer collected in the mountains of San Luis 

 Potosi both flowering and fruiting specimens of this species, and later in 

 1880 complete specimens were secured by Prof. Duges in the vicinity of 

 Guanajuato. The characters of the fruit, hitherto unknown, clearly in- 

 dicate that the affinity of the plant is with the genus Pithecocteniu?n and 

 not with Bignonia. The following supplementary description may be 

 given: capsule oblong-elliptic, 1.4 to 1.6 dm. in length, about 6 cm. 

 broad, somewhat narrowed at either end and densely echinate over the 

 entire surface; valves at maturity falling away from the replum : seeds 

 disposed in 4 to 5 rows. To this species may be referred specimens from 

 the following stations : San Luis Potosi, Parry & Palmer, no. 695, 

 Schaffner, no. 746; vicinity of Guanajuato, Duges (coll. of 1880), with- 

 out number; Puebla, Bilimek, no. 230, and by the same collector at 

 " Cakobaya," no. 229 ; and in the cultivated state at Orizaba, Botteri, no. 

 915, and A. Gray (coll. of 1885), without number. 



Ruellia malacosperma. Perennial, conspicuously lineolate through- 

 out: stems 3 to 5 dm. high, erect or ascending from a ligneous base, te- 



