Robinson and Greenman—Mexican Plants. 167 
rather slender, nearly terete and leafless up to the first fork: 
branches flattened and narrowly winged, scarcely a line in 
breadth, flexuous, several times forked: radical leaves 6 to 8 
inches long, a line wide, surrounded at the base by fibres of 
exserted upon slender pedicels: divisions of perianth elliptic: 
stamens connate only at the base : capsule shortly obovate-oblong, 
somewhat triquetrous, puberulent when young but quite glabrate, 
at maturity nearly 4 lines in length.—Collected by C. G. Pringle, 
on rocky banks, Sierra de San Felipe, Oaxaca, altitude 7,500 feet, 
11 September, 1894 (No. 4902). : 
Nemasrytis Ducesn Watson, Proc. Am. Acad. xxiv, 86. Add 
syn, V. flava Robinson, ibid. xxix, 323. Dr. Watson’s species, 
described from drawings and somewhat fragmentary material, 
Was not at once recognized upon its subsequent collection in more 
perfect specimens. 
Hecutra Prineier, Leaves fifteen or twenty, clustered at the 
base, linear-oblong from an ovate base, spinose-tipped and pun- 
gent, about 8 inches long, remotely serrate with firm curved 
reddish spin 
vase: rhachis flexuous, branches numerous, mostly simple, 
spike-like, ascending or somewhat flexuous and more or less 
ne : bractlets ovate, acute, erose, each subtending a single 
Ower: t 
on the outer surface, a line long, the inner a third longer, elliptic- 
oblong, obtuse: anthers slightly exserted, apiculate: wers 
Sessile; outer divisions of perianth deltoid, acuminate; the 
On the east side of the valley of Oaxaca, abundant, sometimes 
Stowing in patches or masses, May, 1894 (No. 4637). 
Dioscorr em i 
A § 
e San Felipe, altitude 7,000 feet, 11 October, 1894 (No. 
In the latter locality the hitherto undescribed fruit was 
tae furnishing the following supplementa characters: fer- 
: © spikes simple, 1 to 4 inches long ; capsules deflexed, elliptical, | 
‘0 7 lines in length, half as broad, tipped with the persistent 
Styles and stiom pith 
— CONVOLVULACEA Cham. and acne 3 siggriten 
"g well in other respects with this species but having ver 
‘sree flowers (5 lines in diameter) were oamuced by Mr. Pringle 
