450 NOTES OF A BOTANIST 
it in Brazil, but under another name and prepared 
in a different way. There it is called guarana, and 
is largely cultivated in the mid -Amazon region, 
especially on the river Mauhes, which is a little 
west of the Tapajoz, whence it is exported to all 
other parts of Brazil. Single plants of it may 
be seen in gardens and rogas all the way up the 
Amazon, as far as to the Peruvian frontier ; and 
throughout the Rio Negro. Martius's excellent 
account of the Guarana of the Mauhes has been 
translated by Mr. Bentham in Hookers Journal of 
Botany for July 185 1. Martius called the plant 
Patdlinia sorbilis, apparently not suspecting it to 
be the same as Humboldt's PaulLinia Cupana ; yet 
the two are absolutely identical, and Humboldt's 
name, being the elder, must stand. 
The specimens distributed by Mr. Bentham in 
my Plantae Exsiccatae (No. 2055) were gathered 
at Uanauaca, a farm on the Rio Negro, a little 
below the cataracts. I subjoin the brief description 
I drew up on the spot. 
Paullinia Cupana, H. B. K., Nov. Gen. Auier. v. p. 117; 
DC. Pro dr. i. 605. 
Synon. Pmillinia sorbilis, Mart., Peise, ii. p. 1098; ejusdem 
Syst. Mat. Med. Brasil. p. 59; Th. Mart, in Buchner's 
d. Fharvi. xxxi. p. 370. 
Description. — Stout woody twiner, kept down in cultivation to 
the size of a compact currant bush. RamuU and petioles sub- 
pubescent. Leaves alternate, pinnate ; leaflets two and a half 
pairs, 5|- x 2% inches, oval, sub-acuminate, grossly and obtusely 
serrate, the apical tooth retuse, nearly smooth. Racemes axillary, 
with small white flowers in stalked clusters. Fruit (capsule) 
yellow, passing to red at the top, obovato-pyriform, tapering below 
into long neck (quasi-stipitate), at apex shortly rostrate, inch 
long (neck f inch, beak \ inch) ; pericarp thinnish, soft, glabrous 
externally, densely tomentose on the inner surface, 3-valved, 
but dehiscing along only two of the sutures, the third remaining 
closed, by abortion i -celled, i -seeded. Seed ovato -globose, 
