An Enumeration of the Plants collected by Dr. H. H. Rusby in South 



America, 1885-1886, XXVIII 



By H. H. Rusby 



(Continued from Bull. Torr. Club, 26: 200 10 Ap. 1899.) 



Cestrum sparsiflorum Britton, sp. nov. 



Younger portions of the stem sparsely puberulent ; branches 

 elongated, straight and rigid : petioles 5 mm. long, narrowly mar- 

 gined : blades 6-12 cm. long, 2-4 cm. broad, oblong, acuminate 



very 



& 



thin but rigid, the midrib channeled above, underneath terete and 

 prominent, like the 10-12 pairs of very slender, strongly upwardly 

 arched secondaries, which connect near the margin : peduncles 

 solitary from the axils, together with the rachis about 2 or 3 cm. 

 long, slightly recurved, angled, several-flowered, the flowers more 

 or less secund, sessile upon small nodular bases : calyx 5 mm. 

 long, 2 or 3 mm. broad, campanulate, lobed one-fourth of the 

 way, the lobes triangular-acuminate and acute : corolla-tube many- 

 nerved, 2 cm. long, at the base 1 mm., at the summit 2.5 mm. 

 broad, the base loosely enclosed in the calyx, the lobes 6 

 long, triangular-ovate : fruit not seen. 



Yungas, 6000 ft., 1885 (no. 816). 



Sessea dependens R. & P. Fl. Per. 2 : 9. pi. 116. Unduavi 

 10000 ft., Oct., 1885 (no. 2625). The same as Mandon's no. 45c 



Hcata R. & P. Fl. Per. 2:12. //. 122. Near Val 

 ine, 1885 (no. 825). Local name "Pichi." 

 iulata R. & P. Fl. Per. 2 : 16. Mapiri, 5000 ft 



mm 



Fabi 



J 



Nicoti 



April, 1886 (no. 822). The same as Bang's no. 1858. 



Nicotiana tomentosa R. & P. Fl. Per. 2 : 16. Yungas 6000 

 ft., 1885 (no. 2435). Grows 12 to 15 feet high, the leaves very 

 large and with a strong odor of tobacco. 



Nicotiana pandurata Dunal ; DC. Prod. 13: pi. 560. Beni 

 River, July, 1886 (no., 821). 



Nicotiana glauca Grah. Bot. Mag. //. 28 jy. Vic. La Paz, 

 1 0000 ft, April, 1885 (no. 813). Grows on banks of streams ; 

 the leaves used as a narcotic. 



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