Blake — New Plants from Oaxaca 61 
jugis obtusis) supra obscure viridia basi sparse pilosa ceterum 
subglabra subtus pallidius viridia in axillis venarum (7—8-jugarum) 
barbatula ceterum glabra costa et venis interdum obscure puberulis 
exceptis reticulata venis et venulis subprominulis 8.7-11.5 cm. 
longa 3.3-4.5 em. lata, in petiolis supra complanatis sordide pubes- 
centibus subtus subglabris nudis 5-7 mm. longis. Racemi sim- 
plices axillares 6.5-7 cm. longi 1.5-2 cm. diametro, pedunculo 
subglabro 1.5-3.5 cm. longo, rachi griseo-puberula pilis patentibus 
aliis longioribus intermixtis, floribus subproximis, pedicellis 1.3 
mm. longis vel brevioribus. Flores 11-13 mm. lati. Calycis tubus 
turbinatus dense sordideque tomentulo-puberulus pilis aliis lon- 
gioribus intermixtis 4 mm. longus, segmenta 7 ovato-lanceolata 
acuta utrinque tomentulo-puberula et pilosa 4.5 mm. longa. 
Petala 7 non colorata ovalia obtusa ut calyx pubescentia 5.5 mm. 
longa. Glandulae antisepalae conspicuae intus concavae. Stamina 
6~7 in quoque fasciculo, filamentis 44.5 mm. longis filiformibus e 
basi usque ad medium pilosis. Ovarium conicum dense hispido- 
pilosum, stylis 3 hispido-pilosis patenti-divergentibus. — Oaxaca: 
Cafetal Montecristo, Dept. Pochutla, 800 m., 11-12 April 1917, 
Conzatti, Reko, & Makrinius 3027 (rypr in Gray Herb.). — Local 
name “ Palo de piedra.”’ 
Of the three other species known from Mexico and Central 
America, H. racemosum Jacq. is quickly distinguished by its gla- 
brous stamens in fascicles of 3-4, and its round-based leaves. 
H. hondurense J. D. Sm. likewise has the stamens in fascicles of 3. 
The only other species, H. senarium DC., based on t. 293 of the 
Calques des Dessins of Mocifio & Sessé, is described as having 
pedicelled flowers and stamens in fascicles of 6, and of the pre- 
viously known species makes the nearest approach to H. trichoste- 
mon. It is represented in t. 293, however, as with very coarsely 
toothed leaves with truncate-rounded base and_ suborbicular 
petals. In view of these important discrepancies, and of its very 
imperfect description, it seems unwise to assume its identity with 
H. trichostemon merely because of the similar composition of their 
fascicles of stamens. 
SCHISMOCARPUS Blake, gen. nov. Loasacearum-Mentze- 
liearum. — Flores 5-meri. Calycis tubus ina turbinatus 10-costa- 
tus; lobi (in aestivatione vix bene visi) in fructu erecti aperti 
