BLAKE—AMERICAN SPECIES OF HOMALIUM. 235 
simply racemose above, densely griseous-puberulous and sparsely short-pilose, 11.5 
to 15 cm. long, on peduncles 3 to 4 cm. long; lowest branches of panicle 1 to 4.3 cm. 
long; pedicels 2 to 5 mm. long; fruiting calyx tube turbinate-campanulate, obscurely 
striate, somewhat abruptly contracted into a pediform base, griseous-puberulous; 
calyx segments 5 to 7, ovate or elliptic, obtuse, griseous-puberulous, 4 to 5 mm. long, 
1.8 to 2.5 mm. wide; corolla 14 to 18 mm. wide in fruit; petals elliptic or ovate-ellip- 
tic, obtuse, griseous-puberulous, 6 to 7 mm. long, 2.5 to 4 mm. wide; stamens in 
fascicles of 3 or 4, the filaments glabrous or sparsely pubescent at extreme base, much 
shorter than the petals; styles 3, distinct, pilose at base; ovary depressed-conic, 
griseous-villous. 
Type in the U. 8. National Herbarium, no. 941,440, collected in the swamp of 
Sierpe, Pacific slope of Costa Rica, March, 1892, by H. Pittier (no. 6817). 
The type collection of this species was referred by Captain Smith! to 7. hondurense, 
but comparison with the type of that species, now in the National Herbarium, shows 
the Costa Rican plant to differ specifically in its much larger flowers, broader perianth 
segments, depressed-conic ovary, and more pubescent leaves. 
DOUBTFUL SPECIES. 
HoMaALiumM sENARIUM Moc. & Sessé; DC. Prodr. 2: 54, 1825. 
‘“‘Teaves ovate, coarsely dentate; racemes axillary and terminal; flowers pedicel- 
late; stamens in 6 hexandrous fascicles.’’ (DC, loc. cit.) 
‘Leaves oval-oblong, sinuate-dentate, glabrous, short-peticled; flowers subsessile, 
6 to 8-merous, densely tomentose; calyx segments oblong, narrower than the petals; 
stamens in fascicles of 5 to 6; styles 3 to 4, distinct. 
“ Hab. Mexico, Jurgensen (without any number in Herb. Hook.).’? (Benth. Journ, 
Linn. Soc. Bot. 4: 36. 1860.) 
The above translated descriptions represent all that is known of this plant, in addi- 
tion to the figure (pl. 29.3) in the Calques des Dessins of Mocifio and Sessé, which shows a 
plant with coarsely toothed leaves, truncate-rounded at base, and suborbicular petals. 
Under the circumstances it does not seem wise, in view of the very indefinite nature 
of the original description, to attempt its identification with either H. trichostemon 
or H. mollicellum, the only species now known with which it could be associated. 
1 Pittier, Prim. Fl. Costar, 2!: 105. 1898. 
