246 
SELECTED ARTICLES. 
ART. XXXVII.-ON CINCHONA. Extracted from the Lectures of 
John Pereira, Esq., F, L. S. 
Published in the London Medical Ga,7,ette. 
The family Rubiacese of Jussieu, Decandolle, and others, 
has, by Mr. Lindley, been divided into two families, termed 
Stellatse or Stellacese, and Cinchonacese. Stellatae are dis- 
tinguished from Cinchonaceae by their angular stems and 
whorled leaves, destitute of stipules. Moreover they are 
natives of the colder, while Cinchonaceae belong to the hotter 
parts of the world. 
CINCKONACE^. 
Characters. — The plants of this family are trees, shrubs, or 
herbs: their leaves are simple, entire, and opposite, with inter- 
petiolary stipules. The inflorescence varies, but is usually a 
panicle or corymb. The calyx is monosepalous, superior, 
and either entire or divided. The corolla is monopetalous, 
superior, tubular, and divided; its modifications of aestivation 
being various. The stamina are usually five in number, and 
arise from the corolla, with the segments of which they alter- 
nate. The ovarium adheres to the calyx, has two or more 
cells, and is of the kind called inferior: it supports a single 
style, with a simple or divided stigma. The fruit is inferior; 
the seeds are albuminous. 
Cinchona. 
Characters. — This genus is characterized as follows: — The 
corolla is superior, five-toothed, and persistent. The corolla is 
infundibuliform, or salver-shaped, with a five-parted spread- 
ing limb, and valvate aestivation; the stamina are five in 
number, and are inclosed in the tube of the corolla; the ovarium 
is inferior; the stigma bifid. The fruit is a many-seeded cap- 
sule, with a septicidal dehiscence. The seeds are flat, or 
peltate, with a membranous laciniate margin. 
