ROBINSON. — MEXICAN PLANTS. 323 
of this plant known to be in existence was collected by Galeotti (no. 
5456 g) and is in the herbarium at Brussels. 
D. Losata, Uline, var. morelosana. Middle lobe of leaf obtuse, 
mucronate; larger leaves measuring 2.5 dm. long and wide; flowers 
with deeper tube; pedicels shorter and nearer together than in the 
species. 
Morelos, lava beds near Cuernavaca, altitude 1,540 m., C. G. Pringle, 
no. 7341 @. 
IV.—NEW PHANEROGAMS, CHIEFLY GAMOPETALAE, 
FROM MEXICO AND CENTRAL AMERICA. 
By B. L. Roxsinson. 
Hechtia sphaeroblasta. Only ¢ plant known: leaves 7 dm. long, 
4.5 cm. broad at the base, gradually attenuate to a slender pungent apex, 
gray and scurfy on the lower (in dried state concave) surface, pale green 
but nearly smooth upon the reverse face, armed on the margins at inter- 
vals of about 2 cm. with very sharp incurved stramineous spines (2 mm. 
in length): inflorescence many-branched ; axes smooth and glabrous, at 
least 7 dm. high; bracts ovate-oblong, acute, entire, 1 cm. or more long, 
Scarious, with many fine dark vei1s; branches 1 to 3 dm. long, angled, 
ascending, glabrous, 5-9-branched near the middle, bracts of the second 
order, small, scarious, about 2 mm. long; branchlets 4 to 12 em. long, 
slender, ascending, loosely floriferous from the base to the tip, their 
bractlets scarious, 1 mm. long; buds broadly ovoid almost globose, 3 
mm. long just before expanding: flowers 14 to 30 on each branchlet, 
borne singly or subverticillate, nearly sessile, 6 mm. broad in anthesis: 
calyx-divisions oval, 2 mm. long; petals (in.dried state yellowish white) 
suborbicular, distinct or nearly s9, 3 mm. long, obtuse: rudimentary 
Ovary in ¢ flowers glabrous. — Collected by E. W. Nelson at Tlapa, 
Guerrero, Mexico, altitude 1,20) m., 3 December, 1894, no. 2044. 
Types in herb. Gray and herb. U. S. Nat. Museum. This species pos- 
Sessing subsessile flowers, elongat: 1 flowering branchlets, and glabrous 
Ovary, evidently belongs in the g oup with H. rosea, Morr. (which has 
much larger flowers), H. stenopetola, KI. (which has a much denser 
Inflorescence and acuter petals), ar¢ H. gamopetala, Mez (which has the 
petals united). 
MILAX DOMINGENSIS, Willd., var. microscola. Stem rather thickly 
