370 NORTH BRAZILIAN EUPHOUBIACE JJ 



frequently wanting in tlie upper one, and occasionally one also of the 

 lower one. Some specimens in fruit of Mr. Spruce's first Barra collec- 

 tion were distributed as belonging doubtfully to the S. elastica, I have 

 referred here Mr. Brown's species, on account of the pubescence of the 

 underside of the leaf. 



4. S. Spruceanay Benth. PL Spr. exs. ; foliis breviter petiolatis discolo- 

 ribus glabris, glandulis parvis, paniculis amplis puberulis^ pedicelHs 

 flore longioribus, calycibus acuminatis, antheris 7-10 serie duplici 

 verticillatis. 



On the shores of the Amazon, below Santarera ; a smaller tree than 

 the S. Brasiliensis, the leaflets 6-8 inches, or even longer, the panicles 

 a foot or a foot and a half long, with numerous flowers, purple within- 

 side, and much larger than in S. discolor^ the calyx being 2^ lines long, 

 on pedicels 3 or 4 lines long. 



5. S. pauciflora^ Spruce, MS.; foliolis breviter petiolulatis discoloribus 

 glabris, glandulis parvis, paniculis laxis angustis tomentellis, peclicel- 

 lis flore subbrevioribus, calycibus obtusis, antheris 7-10 serie duplici 

 verticillatis. 



This is certainly near to S, discolor, and may prove a mere variety, 

 yet it is a large tree of 40 to 50 feet, yielding a very copious milky 

 juice, and entirely without hairs, although covered on the underside of 

 the leaves with minute white dots, which are soft to the touch, and the 

 flowers are of a pale yellow. It was gathered by Mr. Spruce in rocky 

 situations along the Eio Uaupes, and apparently the same species is 

 found also in British Guiana (Parker, and also Hancock in herb. Hook. 



Eob. Schomburgk, 2nd coll. n. 817, Bich. Schomb. n. 1381). 



§ 2. Ovario apice in dylum hrevem attenuato. 



(>. S. lutea. Spruce, MS. ; foliolis oblongis membranaceis v, vix cona- 

 ceis glabris, paniculis tenuiter tomentosis, calycibus setaceo-acumi- 

 natis, antheris 5-8 ad basin columnse irregulariter subverticillatis. 

 Hamuli glabri. PeiioU longi. FoUola breviter petiolulata, 5-6 poll, 

 longa, circa 2 poll, lata, ssepe subcuneata, breviter acuminata, subtus 

 vix discolora, punctis minutissimis. Paniculce thyrsoidese, laxiflorse, 

 floribus luteis. Pedicelli IJ lin. longi. Flares masculi 1^ lin. foe- 

 minei 3 lin. longi, laciniis anguste fere setaceo-acuminatis. Columna 

 supra antheras longe producta. Ocariiim tomentosum, stylo brevis- 

 slmo sed distincto, stigraate capitato-subtrilobo. 



