498 PROCEEDINGS OF THE AMERICAN ACADEMY. 
corymbs, rusty tomentose and finely linear-maculate throughout ; bracts 
lanceolate, 5 mm. long; pedicels thickish, somewhat clavate, becoming 
1 to 1.5 cm, long: calyx in anthesis 8 or 4 mm. long, deeply cleft into 
5 linear lobes: corolla-lobes lanceolate, 6 mm. long, strongly recurved, 
tomentulose within: filaments broad at base, 2 mm. long; anthers oblong- 
lanceolate, 3 mm. long. —Cutapas, in mountain-woods between San 
Martin and Ococingo, March 18, 1896 (C. & HE. Seler, no. 2226). Re- 
lated to P. sessilifolia, Donnell Smith, but differing in its crenate dull 
leaves, closer shorter pubescence and larger flowers. 
Evolvulus Seleriana. Perennial: stems prostrate or slightly 
ascending, 1 to 2 dm. long, slightly branched, silky pilose, the older 
becoming glabrate: leaves obcordate, obovate or obovate-oblong, short- 
petioled, 5 to 12 mm. long, above appressed long-sericeous or glabrate, 
beneath permanently sericeous: flowers axillary, the filiform arcuate 
sericeous peduncles bractless, 9 to 13 mm. long: calyx very pubescent, 
4 mm. long, with lanceolate lobes: corolla pale (apparently white) some- 
what silky without, 8 to 9 mm. high. Curapas, Tuxtla, Feb. 19, 1896 
(0. & E. Seler, no. 1926). Nearest related to Z. nummularius, L., but 
with different pubescence, obcordate leaves, longer peduncles, and larger 
flowers. 
Ipomoea caudata. Slender glabrous vine: leaves on slender 
petioles 3 to 5 em. long; blade 1 dm. or less long, narrowly ovate, 
prolonged into a caudate-acuminate tip, the base rounded-sagittate, the 
basal lobes varying from blunt to acuminate, dark green above, glaucous 
beneath, palmately 7-nerved at base: peduncles slender, 1 to 1.5 dm. 
long, simple or once forked at the tip; pedicels 2 to 4 cm. long: calyx 
narrowly oblong, 1 cm. long, the unequal oblong blunt lobes mottled : 
corolla rose-purple, 0.5 dm. long, the cylindric tube 4 cm. long, the short 
spreading limb 2 cm. broad: style filiform, glabrous. —MoRELOS, 0D 
mossy faces of the knobs of the Sierra de Tepoxtlan, alt. 2,310 m., 
Sept. 5, 1900 (C. G. Pringle, no. 8448). Habitally resembling L simu- 
lans, Hanbury, but with longer peduncles and calyx, and more slender 
corolla. 
Cordia (Sebestenoides) Seleriana. Branches straggling, CcOov- 
ered with brown verrucose bark : leaves ovate or suborbicular, 1 to 2 cm. 
long, pulverulent and hispidulous ; petioles slender, hispid, 3 or 4 m™- 
long: corymbs few-flowered, the parts very hispid; peduncles 2.5 cm. or 
less in length : calyx oblong-campanulate, 1 cm. long, with short rounded 
lobes : corolla 3 em. long, somewhat hispidulous below, the thin ovate- 
oblong round-tipped crenulate lobes 1 to 1.5 cm. long. — Oaxaca, dry 
