272 ^r.W PLANTS, KTC, 



short broad tliiii leaves render the species anioiio- tlie easiest to 

 recognise. 



Ill tiie accompanying" figure o represents tlie plant reduced in 

 size, h tlie back and r the front of a Hower of the natural size, 

 and (I across section of a pseudo-bulb to show its thinness. 



It requires to be potted in fibry peat, and with a small portion 

 of half-decayed leaves, must be perfectly drained, and kept in the 

 coldest part of tiie stove. It is increased in the uf.ual way Allien 

 the plant is large enough for that purjiose. It flowers in April 

 and May. It is one of the best of the small kinds of Oncidinm, 

 remaining rather long in bloom. 



9. Cinchona calisaya. WecJdcll. Hist. Nat. des Qitii)- 

 quinas, p. 30, tt. 3 and 4. 



Raised from seeds received from the administration of the 

 Jardin des Plantcs of Paris through J. B. Pentland, 

 Esq., on 17th of October, 1848. 



Leaves oblong, obtuse, pale dull green, tapering gradually into 

 the petiole, which is red, as well as the midrib itself; at the back 

 of tlie leaf, in the axil of each principal vein, is a small exca- 

 vation closed up by hairs. The stipules, which fall off very- 

 early, are a pair of oblong, erect, blunt, smooth plates. Tiie 

 flowers appear in panicles at the ends of tlie lateral shoots, are of 

 a pale pink colour before expansion, almost white when fully 

 open, and emit a most agreeable weak balsamic fragrance. The 

 calyx is a small superior 5-toothed cup, covered with fine close 

 down like the branches of the panicle. Tlie corolla has a cylin- 

 drical tube about V inch long, and a reHexed 5-lobed limb, copi- 

 ously fringed with long transparent club-shaped liairs. Tlie 

 stamens are 5, and can just be seen when looking down into the 

 tube of the corolla. 



Dr. Weddell, in his Natural History of tlie Quinquinas, 

 gives a very full account of this important plant, from whicli 

 the following are extracts : — 



" From this species is obtained the most precious of the Je- 

 suit's barks used in medicine, employed from time immemorial in 

 trade under the name of Calisaya bark, but whose origin was 

 wholly unknown till now." 



" I have already observed that this tree has hitherto been 

 only found in Pern, in the southern part of the province of Ca- 

 rabay^a. The results at which 1 have arrived in endeavouring 

 to determine exactly the limits of the region it occupies seem 

 curious enough to be noted in this place. Thus, after having 

 studied the plant in all the ancient province of Yungas in La 

 Paz, to the north of 17° S. lat., I followed it into that of Lare- 



