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2 : THE CALISAYA BARKS OF EASTERN BOLIVIA. 
plants represent apparently the Ichu Calisaya, or var. Josephiana, also 
the morada, the zamba-morada, the naranjada, the verde, and two or 
three other forms. 
The bark of the negrilla is apparently the same of which I received 
specimens from Dr. Weddell, collected in his second journey in Bolivia, 
and called Calisaya zamba, negra, or macha (see Histoire, ete., p. 35). 
(The negrilla of commerce is quite another thing.) Of this d/ack sort, 
Mr. Fitch has given simply the outline of a leaf in the background. 
It must be considered a variety of Cinchona Calisaya, but it is a very 
marked form, approaching more nearly to the normal character of 
this plant than it does to the C. Boliviana. 
The morada seems to vary so much more from the C. Calisaya, that 
I hesitate to ascribe it to this source, only that the bark is imported 
and passes unquestioned as that of genuine Calisaya. If the bota- 
nical information given to me with the above specimens by Señor 
Rada be confirmed by subsequent investigations, it seems that the 
evident analogy of the plant is with the C. purpurea of Pavon (exclus. 
C. pubescens), as this is represented in the * Flora Peruviana’ (R. and — 
P.), in Heyne's * Arzneigewiichse,’ and in my * Quinologia.’ This is 
better seen in the strictly morada than in the nearly allied zamba- 
morada, which is, I think, the sort here described and delineated. 
If this supposed resemblanee to the C. purpurea should be found 
correct, it will harmonize with information given under the head 
C. purpurea in the * Quinologia’ respecting specimens gathered by the  . 
German botanist Lechler, and representing (as he tells us) the ** Casca- 
rilla morada et Zamba morada incolarum." 
Lechler's specimens were gathered near the river of San Govan (pro- 
bably San Juan). I think them allied to those here described, but 
not exactly identical, since I believe that every marked district of the 
Andes has its own Cinchone, and that those of Carabaya (in which it 
is probable San Govan is included) are not in all things exactly 
-© similar to those of Eastern Bolivia. 
The colour of the flowers, according to Senor Rada, is purple in 
la morada, white in /a verde, and the height of the trees great, not 
less in these virgin forests than from 40 to 50 varas (i. e. from 120 to 
150 feet), some falling short of this altitude, but others exceeding it. 
The great size of the trees must be concluded from that of the flat 
bark from the trunk which he has brought into this market. The 
