ROBINSON AND GREENMAN. — MEXICAN PLANTS. 393 
added to the group of large-leaved members of Euphyllanthus. It 
differs from P. glaucescens, HBK., as described by Kunth and Miller, 
Arg., in its shorter petioles, smaller leaves, and in the very different 
form of the stipules; from P. adenodiscus, Miill., Arg., in the form 
of the glands in the sterile flower and in the absence of any conical 
production of the stamineal column ; from P. laxiflorus, Benth., in its 
much shorter inflorescences, as well as in its leaves, abrupt, not acute, 
at the base. From all these species it also differs in having definitely 
two and not three stamens. 
ACALYPHA ERUBESCENS. An erect, pubescent annual, 6 inches to 
one foot in height: stems terete, purple, branched, villous with spread- 
ing white hairs; lower branches spreading, elongated: leaves ovate, 
crenate-serrate, obtuse, rounded at the base, 9-14 lines long; petioles 
4-7 lines long: sterile spikes small, about 3 lines long on peduncles 
of nearly equal length; fertile spikes terminal and axillary, dense, 
short, cylindric, sessile, becoming reddish, 6 lines long, 4 lines in 
diameter ; the lateral ones somewhat smaller; bracts 1-flowered, sub- 
equally 7-toothed, villous-pubescent: styles 3, undivided; ovary 
villous above ; seeds ovoid, smooth, black, with a white caruncle. — 
Collected on limestone hills near Villar, 14 September, 1893 (n° 
4538). 
Tracia aFrinis. Stems slender, elongated, flexuous as though 
twining, finely striated, densely pubescent: stipules 1} lines long; 
leaves ovate, acute, crenate-serrate, cordate with a deep rounded sinus, 
green and appressed-pubescent above, paler and more densely pubes 
cent beneath, 2-2} inches long, 15-20 lines broad ; petioles g—1 ine 
in length: racemes loosely flowered, 2} inches or less in length: 
calyx of the fertile flower with segments oblong, rounded at the ape 
nearly or quite glabrous: capsule depressed globose, hirsute, 3-4 lines 
in diameter. — Collected in the barranca of Guadalajara, 17 October, 
1893 (no. 5474). This plant has the whole habit and many of the 
technical characters of 7. macrocarpa, Willd. It differs, howevets * 
its shorter stipules and in the finer and more crenate serration of its 
leaves, those of 7’. macrocarpa being rather deeply and sharply serra’ 
entate. 
Acave Portosina. Roots thickened, fusiform; rootstock bulb- 
like, an inch or more in diameter, clothed with a thick layer ot 
broad, scarious, imbricated, persistent bases of the old leaves: fres 
leaves few, 4-6; the foliar portion lance-linear, 6 inches long; about 5 
lines broad, narrowed to a slender, unarmed tip; the narrow bea | 
margins bearing short, soft, spreading truncate or irregularly “pP ed | 
