20G 
CALYCIFLORjE . 
that it would prove a substitute for the true Peruvian 
bark, and a full account of the tree and of the properties 
of the bark were communicated by the discoverer to the 
Royal Society of Edinburgh. Modern chemical science, 
ascertaining that it is defective in those principles which 
confer their efficacy to the true Cinchonas, has informed 
us, why the bark of this, as well as of the other species of 
this genus, has failed in proving remedial for remittent 
and intermittent fevers. 
3. Exostemma coriaceum. Stiff-leaved Exos - 
temraa. 
Glabrous, leaves elliptic obtuse slightly attenu- 
ated at the base, corymb terminal dichotomously 
subdivided, calycine teeth 5-6 short subacute, 
corolla length of the leaves, capsule spherical 
ecostatc. 
Roem. and Schult. V. 20. 
II A B. Union Hill, St. Ann’s. Dr. Alexander. 
F L. June — July. 
Leaves 2^ inches long, and broad, thick, leathery : 
petiole an inch in length. Stipules broad oblong, round- 
ed at the apex. Calyx with the teeth erect, minute. Co- 
rolla 5-partite. 
4. Exostemma floribundum. Showy Exos- 
temma. 
Glabrous, leaves elliptic acuminate, peduncles 
terminal corymbose, calycine teeth short acute, 
corolla three times longer than the leaf, capsules 
turbinate smooth. 
Cinchona floribunda. Swartz , FI. Ind . Occ. I. 375. — 
Lambert. Gen. Cinch. 27. t. 7 — Exostemma floribundum, 
Roem. et Schult. V. 19. 
II A B. Wooded banks of mountain streams. 
F L, June — July. 
A tree with a stem 30-40 feet in height, and a foot in 
diameter: bark very bitter: branches towards the end 
obscurely tetragonal, purpurascent. Leaves about six 
inches in length and three in breadth, shining, resembling 
those of the Coffea Arabica : petiole i an inch in length. 
