548 PROCEEDINGS OF THE AMERICAN ACADEMY. 
the two short awns. — Linnea, xxxiv. 528 (nomen nudum), & Bull. 
Soc. Bot. France, xii. 79 (nomen nudum); Britton, Bull. Torr. Club, 
xix. 150 (nomen subnudum); Rusby, Mem. Torr. Club, iii. no. 3, 60 
(nomen nudum).— Andes of Bolivia, in woods, La Paz, altitude 2,600 
to 3,700 m., January, 1861,G. Mandon, no. 57 in herb. Gray ; October, 
1895, Rusby, no. 1721; 1889, Bang, no. 4. 
++ ++ ++ Stem wingless: leaves opposite at least below: heads corymbose : 
Mexican species 
= Leaves large, gray-pubescent beneath: achenes with broad fimbriate wings. 
44, V. sororta, Gray, Proc. Am. Acad. xv. 37; Hemsl. 1. c. 190.— 
San Luis Potosi, Parry & Palmer, no. 466. 
= Leaves smaller, lanceolate, white beneath: achenes very narrowly winged. 
' 45. V. HypoGLauca, Sch. Bip. An attractive shrub, 3 to 5 m. high, 
with habit of the following species. — Sch. Bip. in Klatt, Leopoldina, 
xxiii. 144 (1887).— S. Mexico, Cumbre de Acalcingo, Liebmann, no. 
485; Oaxaca on the Sierra de San Felipe, altitude 3,000 m., Pringle, 
no. 6041, 
++ ++ ++ ++ Stem (at least on the upper part of the internode) bearing narrow, soon 
corky wings: leaves alternate: achenes very narrowly margined: fruticose. 
S. Mexican species. 
= Leaves whitened beneath by an poms coe and close pubescence: pedicels 
ort, gla 
46. V. NeRIIFOLIA, Hemsl. I. c. oe ae Ghiesbreght, no. 528, 
Nelson, no. 3466. pL number in herb. Grayd 
oe ¥ loosely canes ose beneath : pedicels longer and more slender, 
pabencees with spreading hairs. 
47. V. oaxacana, DC. Prodr. y. 614, not Klatt, 1, c. xxiii. 144.— 
Mountains of Oaxaca, Andriewx, no. 801, acc. to DC. 1. ¢c. To this spe- 
cies may be referred L. C. Smith’s nos. 877 and 895, coll. at San Juan 
del Estado at 1,800 m. altitude. 
= = Leaves slightly paler but green beneath: pedicels puberulent to 
tomentulose. 
48. V. Lresmannu, Sch. Bip. in Klatt, l. c. xxiii, 144 (1887). 
variabilis, Rob. & Greenm. Proc. Am. Acad. xxxii. 47 (1896).— 8. 
Mexico, Cumbre de Estepa, Liebmann, no. 538; mountains of Oaxaca, 
_ £. W. Nelson, no. 1393, Pringle, no. 4918, Conzatti, no. 31; and a doubt 
_ ful specimen from Guerrero, HZ. W. Nelson, no. 2215. 
