86 SCHOMBURGK’S GUIANA PLANTS. 
vis crassis alternis v. oppositis instructi. Calyx globosus, 
striatus, per anthesin in valvas 4 crassissimas fere ad basin. 
rumpens. Petalum sesquipollicem latum. Stamina glabra. 
—Barcellos on the Rio Negro, and on the Rio Parine. 
Schomburgk, n. 914. Received also from the Petersburgh 
Academy from the Rio Negro. 
The larger stamina observable in several Swartzias, have 
been supposed to be the transformation of the four lower 
petals of a papilionaceous corolla; but their number in this 
and some other species, the gradual manner in which they 
pass into the smaller ones in some cases, and the circum- 
stance that, where few, their number is usually odd, not even, 
are facts that seem to militate against that supposition. : 
219. S. (Possira) latifolia (sp. n.) ; petiolo aptero, foliolis 
5—'1 late obovatis orbiculatis ellipticisve obtusissimis coria- 
ceis glabris supra nitidis subtus pallidis venosis ad venas sub- 
tomentosis, racemis ramealibus fasciculatis calycibusque fer- 
rugineis, petalo glabro calyce duplo longiore, "staminibus 
majoribus 5—6 minoribus numerosis, ovario tomentoso, stylo 
brevi, stigmate capitato.—Arbor 20—30-pedalis. Foliola 
4—5-poll. v. paris inferioris 2—3-poll. lata. Stipule breves 
crasse falcatz:. Racemi breves numerosi floribundi. Calycis 
piso communi parum majores. Bracteole nulle.—Dry 
savannahs, British Guiana. Schomburgk, n. 724. i 
The four following new Swartzias, are all from the neigh- 
bourhood of Borba in Brazil, and were communicated to me 
by the Imperial Academy of Petersburgh. 
S. laxiflora, (Bongard Ms.) ; stipellis breviter decurrentibus 
petiolis ceterum nudis ramulisque ferrugineo-pubescentibus, 
foliolis 9—11 oblongo-lanceolatis acuminatis basi subangus-- 
tatis supra glabris nitidis subtus ferrugineo-pubescentibus, 
racemis laxis reflexis 3—5-floris, pedicellis apice bracteolatis 
calycibusque coriaceis ferrugineis, petalo calyce duplo majore . 
extus villoso, staminibus majoribus circa 15, minoribus 
numerosissimis liberis, ovario longe stipitato velutino, stylo 
 longiusculo.—Foliola 2—2} v. vix 3 ball longa.  Calyces 
4—5 lin. diametro. | ig 
