194 
regards its bracts and bracteoles. The type of D. albicaulis, 
described in 1896, is a Guatemala plant collected by Heyde & Lux 
at Cerro Gordo, Santa Rosa, issued by Mr. J. Donnell Smith 
as n. 3869. This plant has leaves which are pubescent on the 
nerves beneath, not glabrous as stated in the original diagnosis, 
where it is inadvertently cited as n. 3569. 
888. Dioscorea melastomatifolia, Uline MSS. ex Harms in 
Herb. Kew [Dioscoreaceae]; species D. truncatae, Miq., simillima 
sed antheris altius insertis, foliis margine vix hyalinis, caulibus 
sinistrorsum volubilibus apte distinguenda. 
angulata brunnescens; flores inter se 2-3 mm. remoti; bracteae 
ovatae, acutae, 1 mm. longae, nonnunquam bracteolis 1-2 
bracteis similibus nisi minoribus additis. | Perianthium 
6-partitum, campanulatum, maculis perpaucis rubris notatum; 
lobi ovati, obtusi, subaequales. Stamina 6; antherae fere sessiles, 
globosae, ad basin loborum l-seriatim insertae. Ovarii rudi- 
mentum 0.  Spicae foemineae simplices, axillares, 10-16 cm. 
longae pluriflorae; rhachis angulata; flores inter se 1 
etu 
wi em. lata. Semina anguste oblonga, circumcirca alata; ala in 
ateribus quam supra et infra angustior. 
; tr. Harms has treated as 
conspecific with the plant collected b Spruce at Santarem. 
peer ste - me astomatijolia is best placed in the 
ection Apodostemon, and in that portion of the section, as 
pidecnnn ed him, wherein the plane of insertion of the stamens 
P 889. Dioscorea truncata, Mig. ex R. Schom burgh in Versuch 
pisoytl efor. brit. Guian. p. 899—nomen tantum [Dios- 
li, ae | ; species D. marginatae, Griseb. et D. melastomati- 
foliae, Uline, brasiliensibus proxima, ab illa floribus utriusque 
