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2 THE CALISAYA BAKKS OF EASTERN BOLIVIA.
plants represent npparcntly the IcJm CaUsaya, or var. Josephiuna, also
tlie 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 Calhaya zamba, negra, or macJia (see Histoire, etc., p. 35).
(The negrilla of commerce is quite another thing.) Of this black 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 Senor
Eada be confirmed by subsequent investigations, it seems that the
evident analogy of the plant is with the C. purpurea of Pavon (exclus.
C. pnbescens), 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, wliich is, I think, the sort here described and delineated.
If this supposed resemblance 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."
Ijcchler'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 Cinchona;, 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 Seiior Eada, is purple in
la morada, white in la 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 Jiltitude, 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