New Species of South American Plants 89 



sheath, its margin more or less fimbriate, the fimbriae dark- 

 colored. Blades 5 to 7 cm. long, 1.5 to 3 cm. broad, oblong- 

 obovate with a slight contraction a little- below the middle, the 

 base slightly cordate, the summit abruptly short-acuminate 

 and acute, the slender reddish venation not prominent, the 

 secondaries about 15 to 17 on each side, spreading, the extremi- 

 ties upcurved and connecting near the margin, connected by 

 numerous crooked tertiaries, which are sligntly impressed on 

 the upper surface. Racemes axillary, peduncled, elongated, 

 nodose from the fallen floweis, which are rather distantly placed. 

 Pedicel l to 1.5 cm. long, striate, slightly thickened upward. 

 Calyx-lobes nearly i cm. long, ovate, long-acuminate and acute, 

 thin. Ovaries 2 mm. long, the inner glands of the calyx very 

 unequal, mostly small and obscure. Disk of two thick scales 

 half as long as the ovaries, obovate with truncate summit. 

 Corolla-tube about 13 mm. long, 1.5 mm. wide, the throat 

 nairowly campanulate, 2 cm. long, finely many-nerved, the 

 limb 3 to 3.5 cm. broad. Follicles nearly parallel, 8 to 10 cm. 

 long, and 8 mm. broad after opening and expanding, terete, 

 lightly falcate. 



"Cotana, near Ilimani, Bolivia, 2,450 meters altitude, Nov- 

 ember, 1911. A climbing shrub of variable height." (Otto 

 Buchtien, No. 3229.) 



The habit of this plant is quite unlike that of Dipladenia, 

 as are its peculiar interpetiolar sheaths and its calyx-glands. 

 It is quite different in these respects from any other genus, and 

 is likely, on better acquaintance, to prove distinct. 



Odontadenia cuspidata, n comb. 



= Dipladenia cuspidata Rusby. Bull. N. Y. Bot. Card. 

 4:410 (1907). 



Mandevilla attenuata. 



Soft-tomentose throughout, the stems very slender, terete, 

 striate, reddish, the internodes shorter than their leaves. Peti- 

 oles extremely short, thick, the blades 6 to 9 cm. long, 2 to 3.5 

 cm. broad, lanceolate with rounded or slightly cordate base and 

 long-acuminate and acute summit, deep-green above, yellow- 

 ish-gray beneath, the principal veins lightly impressed above, 

 slightly prominent beneath, the secondaries about 12 on each 

 side, very slender, ascending, lightly falcate and connecting 

 near the margin. Peduncles i to 1.5 cm. long, stout, few- 

 flowered, the pedicels about equal, both angled, exceeded by 

 the lanceolate long-acuminate bracts. Calyx 6 or 7 mm. long, 

 the tube very short, 3 or 4 mm. broad, the divisions appressed, 

 lanceolate, long and slenderly acuminate. Inner scales of the 

 calyx short, ovate, obtusish, nearly equalling the very thick 



