TAPURA AND LECOSTEMON. 293 
5. T. Amazonica, Pepp. et Endl. Nov. Gen. et Sp. vol. iii. p. 41; foliis 
ellipticis utrinque acutis subtus molliter hirsutis, drupa biloculari. 
From the neighbourhood of Ega, on the Amazon. Unknown to me, 
and only seen in fruit by Poeppig. 
The genus Chailletia now includes four American species, viz.—1. 
C. pedunculata, DC., which Schomburgk describes as a stout climber, 
his specimens (1st coll. n. 477) agreeing in every other respect with 
De Candolle's figure and description. 2. C. latifolia, Spruce, sp. n.; 
foliis amplis obovatis v. obovali-ellipticis supra glabris subtus ramulis- 
que tomento minuto incanis, pedunculis dichotome corymbosis petiolo 
adnatis calycem æquantibus, floribus digynis——Folia 6—9 poll. longa, 
3-5 poll. lata, basi rotundato-cuneata, seepe inzequalia, apice rotundato 
cum acumine brevissimo acuto. Inflorescentia et flores C. pedunculate, 
nisi cymse densiores. Sepala ovata, extus tomentosa, zstivatione im- 
bricata. Petala angusta, bifida, intus costa elevata percursa, lobis acutis 
concaviusculis, zestivatione leviter imbricata. Sguame perigyne parve, 
subintegre. Ovarium villosissimum, biloculare, loculis biovulatis. 
Styli 2 breves.—4A. stout climber, with white flowers, of which Mr. 
Spruce found a single plant in the Capoeiras, near São Gabriel. 3. C. 
vestita, Spruce, described in vol. iii. of this Journal, p. 372, which, like 
C. pedunculata, appears to be sometimes a slender tree, sometimes a 
stout climber. 4. C. Cubensis, Poepp. et Endl. Nov. Gen. et Sp. vol. iii. 
p.41. Unknown to me. 
LzcosrEMON, Mog. et Sess. (Nat. Ord. Chrysobalanacee.) 
The number of new genera and species established in De Candolle’s 
Prodromus, upon no other foundation than Mogino and Sessé's Mexican 
drawings, has been the subject of much animadversion ; and as in many 
cases, after the lapse of many years, no specimens turned up in recent 
Mexican collections answering to the characters given, these have often 
been set down as hypothetical. It is astonishing however, in regard to 
genera at least, how numerous are the instances in which, when the 
plants themselves have at length found their way into our collections, 
they have proved the general accuracy of the Spanish artists’ analysis, 
- and the skill with which De Candolle has availed himself of them in 
drawing up his characters. Even where the original Mexican types 
have not been re-discovered, the validity of the generic groups has been 
frequently tested in South American congeners. On a former occasion I 
