ROBINSON. — MEXICAN PLANTS. 3825 
nerved, strigose-ciliate: flowers roseate, in globose heads; peduncles 
2.5 cm. long, borne by 2’s or 3’s at the nodes of unbranched terminal 
racemes: heads (including exserted stamens) 1.6 cm. in diameter: 
bractlets small, spatulate or oblanceolate, with thickened pubescent acute 
ends: calyx translucent, closely appressed, scarcely toothed but strongly 
ciliate: corolla 4-lobed, 4-nerved, 2.7 mm. long, the lobes oblong, sub- 
carinate, tomentulose toward the summit, about half the length of the 
tube: stamens 4; filaments 3 times as long as the corolla, slightly en- 
larged above: fruit green, 3-4-jointed, constricted between the oval 
moderately flattened strigose segments, stipitate, 3 to 3.4 cm. long, 8 mm. 
broad. — Collected at Salina Cruz, State of Oaxaca, Mexico, by Charles 
C. Deam, 21 December, 1898, no. 113. 
This species (of § Eumimosa) is most nearly related to M. psilocarpa, 
Robinson, but is readily distinguished by its strigose fruit and narrow 
strigose not soft-pubescent leaflets. 
M. psilocarpa. Branches ligneous, terete, unarmed, roughened by 
ferrugineous lenticels: petioles 2.3 to 5.4 cm. long; leaves 1-jugate; 
leaflets on each division normally 3 pairs (the inner member of the low- 
est pair often reduced), obovate, oblique or semicordate at the base, firm 
and subcoriaceous, 2.8 to 3.6 cm. long, 1.5 to 2.5 cm. broad, when young 
finely pubescent upon both surfaces, in age pale, lead-colored (in dried 
specimens), slightly lucid, glabrate except for a few short appressed or 
incurved stramineous bristles upon the slightly thickened margin and 
upon the nerves beneath: peduncles about 3 cm. long, divergent, borne 
singly or by twos at the nodes of short terminal racemes ; bracts suba- 
late, ciliate ; flowers perfect (so far as observed), capitate : calyx 0.7 mm. 
long, slightly toothed, ciliolate: corolla 4-toothed, 4 mm. long, 4-nerved ; 
the teeth lanceolate, one-third the length of the tube: stamens 4: ovary 
slender-stiped ; pod 2-4-jointed, glabrous, wholly unarmed, 2 to 3 em. 
long exclusive of the stipe (nearly half as long), 1.3 cm. broad, con- 
stricted between the segments, mucronate. — Mountain woods between 
“S. Carl and S. Bartolo Yuahntepec,” Oaxaca, collected by C. & E. Seler, 
6 January, 1896, no. 1727. This species belongs to Bentham’s series 
Castae and may be placed near Mf. lactiflua, Delile, although in habit 
and large leaflets it suggests some of the Sensitivae. “ 
Curnea Rerpusticar, Rob. & Sea. Proc. Am. Acad. xxviil. 106. 
The type number of this species, unfortunately cited at the time of 
publication as Pringle’s no. 4112, is his no. 4142. 
VeRNoniA LiaTROIDES, DC. Prodr. v. 34 (1836). Add syn. Hupa 
torium tulanum, Klatt, Abh. Naturf. Ges. Halle, xv. 323 (1882). 
