usque ad 4.5 mm. in diametro, nigrescens. Capsula com- 
parate parva, pyramidalis, in circuitu triangularis, apice 
vulgo acutissima, maturitate plusminusve 40 mm. longa 
sed saepe paulo longior, 30 mm. in diametro, suturis 
parictalibus elevatis et carpello quoque carina dorsali, 
longe pedunculata, laevis, atroviridis sed in suturis et 
carinis prominenter flava, apicem versus rufescens ; paula- 
tim dehiscens, semina simpliciter per casum non per fra- 
gorem diffusa; coccorum valvae tenues, coriaceae, post 
dehiscentiam valdissime contortae, in pedunculo diu per- 
sistentes, epicarpio tenuissimo, vivo perfecto levi, 0.6 
mm. crasso, endocarpio 1 mm. crasso. Semina elongato- 
ovoidea, proclivitate longitudinaliter triangulari-ovoidea, 
in circuitu tetragona et valde angulosa, 20-27 mm. X 
12-15 mm. X11-13 mm. (plerumque 26 mm. X14 mm. 
11 mm.), pallide cinereo-brunnea cum maculis irregu- 
laribus parvis spadicibus, raphide non prominenti et 
faciebus magnis, valde prominentibus. 
COLLECTIONS EXAMINED: 
Brazit: Estado do Amazonas, Rio Negro basin. ‘‘Insula Xipard, 
Sao Joaquim [Nom. vulg. =] seringa serapé.’’ February 1902, E. Ule 
6023.—Same locality and date. [Nom. vulg. =] “‘barriguda.’’ E. Ule 
6024 (Hevea microphylla var. majoris typus).—Same locality and date. 
[Nom. vulg. = | ‘“tambaqut seringa.’’ E. Ule 6025 (Ty pus).— Barcellos, 
1905 (2) 4. Ducke 7027.—Insula Xiparti, prope Sao Joaquim ‘ . 
silva profunde inundata. Arbores (3 ex.) parvae vel mediocres, trunco 
infra incrassato, flor pallide luteis. Seringa barriguda vel seringa tam- 
baqui.”’ August 8, 1931, 4. Ducke, Herb. Jard. Bot. Rio 23750 (Topo- 
typus).—Rio Enuixi, Lake Dondona (Municipality of Sao Gabriel). 
‘‘Toapd, Latex white, rubbery, abundant.’’ Tree 40 ft., [diameter | 
15 inches.’’ 1942(?) Ricardo de Lemos Frées sine num.—‘*Middle Rio 
Negro, 600 miles east [sic] of Mandos.*’ 1942, Ricardo de Lemos 
Frées 812. —Rio Enuixi, Lake Januari (Municipality of Sao Gabriel). 
March 22, 1942, Ricardo de Lemos Frées 812B.—Rio Enuixi, Lake 
Dondona (Municipality of Sao Gabriel), May 18, 1947, Ricardo de 
Lemos Frées 22371.—Estado do Para, Rio Tapajéz, Belterra. *“*Culti- 
vated. Original from middle Rio Negro near Barcellos.’’ June 26, 
1947, George A. Black 47-951,-—Rio Negro, Xibart, near Sao Joaquim. 
120) 
