SCHOMBURGK’S GUIANA PLANTS. 317 
Herb. Par. n. 90.—It is also Gardner’s n. 998, from Per- 
nambuco, and occurs in several West Indian and North 
Brazilian collections. 
403. J. nervosa, Poir.—DC. Prod. MI. p. 56.—Swampy 
savannahs, British Guiana. Schomburgk, n. 438, and in 
some of the later sets n. 61. In the earlier sets, Schom- 
burgk’s n. 61 is a much narrower-leaved variety or allied 
species, with the same flowers and fruit as in the more com- 
mon J. nervosa; possibly it may be J. Maypurensis, ( Humb. 
et Kunth.) 
404. J. latifolia (sp. n.); herbacea, glabra, foliis ovatis 
utrinque acuminatis brevibus petiolatis, floribus breviter 
pedicellatis, bracteis minutis v. nullis, calycis tubo ovoideo 
subangulato, laciniis 4 lato-lanceolatis petala superantibus. 
— Capsula ovoidea 5 lin. longa, apice constricta nec, ut in 
speciebus brachycarpis plerisque, turbinata.— British Guiana. 
Schomburgk. 
MYRTACEZ. p 
405. Psidium polycarpon; ramulis hirsutis subcompressis, 
foliis petiolatis obovatis oblongisve obtusis v. vix acuminatis 
i cuneatis utrinque pubescentibus, pube subtus sericea 
demum velutina, pedunculis axillaribus trifloris calycibusque 
villosis, ovario ovoideo alabastro obtusissimo, calycis limbo 
demum 5-partito coriaceo.— 7. polycarpon, Lamb. Act. Soc. 
Linn, XI. p. 231. DC. Prod. Ul. p. 235.— Folia 3—4-polli- 
caria, nunc obtusissima, nunc fere acuta. Pedunculi 6—10 lin. 
longi. Bracteole anguste lineari-lanceolate. Calycis lacinise 
Obtusissime. Ovarium 4—5 loculare.— Arid savannahs near 
Pirarara on the Rupunoony. Schomburgk, n. 636; also 
Panama, Cuming, n. 1273.— This species is evidently allied 
to P. pomiferum, and to P. pyriferum; but is much more 
downy, and the buds are remarkably obtuse, whereas they 
appear to be always more or less pointed in the two others. 
It differs from De Candolle's character of P. hians, by the 
peduncles being always three-flowered, though sometimes - 
accompanied by a second one-flowered pedicel from the same - 
