COLLECTED BY MR, SPRUCE IN BRAZIL. . 193 
absence of fruit it is impossible to say with certainty whether it be a . 
Serjania or a Paullinia. * 
Among the numerous Serjaxie with biternate leaves, Mr. Spruce has 
but one, distributed as a species allied to S. paucidentata, DC., which 
on a closer comparison with Guiana specimens (British Guiana, Robt. 
Schomburgk, 2nd coll., n.992, Richard Schomburgk, n.1710 ; Cayenne, 
Martin, and Surinam, Hostmann, n. 998) does not appear to be really 
distinct from that species. 
There are five Paullinie ; three new species described below, a single 
specimen of P. riparia, H.B.K., from the Rio Aripecurü, and another 
from the same locality, of P. pinnata, Linn., with rather narrower wings 
to the petiole than usual. To the various synonyms of this widely- _ 
diffused species must be added the P. diversiflora, Miq., and P. Host- 
manni, Steud. 
1. Paullinia spicata, sp. n. ; caule obtusangulo foliisque pinnatis alsin 
petiolo aptero, foliolis 5. amplis ovali-oblongis breviter acuminatis 
obtuse paucidentatis viridibus nitidulis, racemis subsessilibus spicæ- 
formibus dense multifloris, capsula elongato-pyriformi obtusa glabra.— 
Ramuli crassi, angulis 3—4 elevatis obtusis suleatisve. Stipule cadu- 
cissimæ. Foliorum petiolus communis 4—7-pollicaris, teres, leviter 
suleatus. Foliola 4-b-pollicaria v. terminale 6-7 poll. longum, 
2-3 poll lata, margine more P. pinnate grosse paucidentata, basi 
rotundata v. terminale cuneatum, utrinque viridia et glaberrima ex- 
ceptis barbis minutis ad axillas venarum paginæ inferioris, supra 
nitidula, petiolulis 1-3 lin. longis. Racemi axillares, 2—5-pollicares, 
tomento tenui canescentes, fere a basi densiflori, fasciculis florum 
approximatis sessilibus. Bractee lineares, caducæ. Flores albi, 
brevissime pedicellati. Sepala 5, ovato-orbicularia, concava, extus 
cano-tomentella, exteriora fere 1 lin., interiora 14 lin. longa. Petala 
4, oblonga, calyce paullo longiora, squamis inferiorum appendicula - m 
inflexa auctis. Ovarium breviter stipitatum, fere glabrum, stylo 
usque ad medium trifido, lobis intus stigmatosis. Capsula fere —— 
P. pinnate, sed longior et longius stipitata.—On the Lake Quiriquiry. 
I should have taken the above plant, which I have also from Mar- — 
tin's Cayenne collection, for the Guarana or Paullinia sorbilis, Mart. — 
(Reise, vol.ii. p. 1098), but that its stem is certainly climbing and 
the capsule not at all rostrate. As Martius's species has not been 
taken up either by Walpers or by Steudel and as his B 
