356 DIOSCOREACEZ. 
apicem racemi solitariis) ; racemi usque ad pedales; bracteze anguste flores superantes ; peri- 
anthii segmenta fere libera lanceolato-oblonga, obtusiuscula; stamina 6 subequalia, filamentis 
perianthio basi adnatis. Flores feminei albido-pubescentes, racemosi, solitarii, subsessiles, basi 
bibracteati, bracteis linearibus acutis; perianthii segmenta ovato-oblonga, subacuta; stamina 
abortiva 6; ovarium oblongum, pubescens; stigmata bifida. Fructus deest. 
Panama, Loseria (S. Hayes, 726).—Bania. Ab. Kew. 
Gardner’s 6094 from Maranha, Brazil, is very closely allied, and possibly the same 
species. 
EXPLANATION OF TAB. XC. 
A branch bearing male flowers, collected by Hayes, and a branch bearing female flowers, collected 
by Salzmann: both natural size. Fig. 1, an unopened male flower; 2, a male flower fully 
expanded ; 3, an unopened female flower ; 4, a female flower fully expanded: all enlarged. 
8. Dioscorea densiflora, Hemsley, n. sp. 
Prater racemos minute puberulos glaberrima, foliis 7-nerviis nitidis, floribus masculinis longe dense- 
que racemosis, pedicellis solitariis quam perianthium brevioribus, perianthio alte 6-partito, 
staminibus fertilibus 3 brevibus, capsula pollicari utrinque rotundata. 
Frutex volubilis, fere omnino glaberrimus, caulibus graciliusculis teretibus striatis vel leviter 
sulcatis. Folia alterna, longiuscule petiolata, membranacea, 7-nervia, nervo utroque extimo 
alte bipartito, vere cordiformia, 3-6 poll. longa, usque ad 3 poll. lata, longe acuminata, acuta, 
nitida; petiolus gracilis, circiter sesquipollicaris, supra canaliculatus. Flores masculini 2 lineas 
longi, dense racemosi ; racemi minime puberuli, graciles, usque ad 9 poll. longi, simplices vel a 
basi 1-2-furcati; pedicelli solitarii 1-14 lineas longi; bractee anguste lineares, flores exce- 
dentes ; perianthium alte 6-partitum ; segmenta equalia, lanceolato-oblonga, obtusa, uninervia ; 
stamina fertilia 8, perianthio 4-plo 5-plove breviora, cum 8 imperfectis alternantia. Flores 
feminei simpliciter racemosi, perianthio ut in masculinis ; racemi densiusculi. Capsula pallida, 
pollicaris, circiter 9 lineas lata, utrinque rotundata, alis marginatis ; semina oblonga, 4-5 lineas 
longa, undique sed irregulariter alata. . 
SoutH Mexico, valley of Cordova (Bourgeau, 1487, 1681). Hb. Kew. 
9. Dioscorea floribunda, Mart. et Gal. (Descript. amplif.) 
Glaberrima, foliis 9-nerviis ovato-cordatis longissime acuminatis, floribus masculinis racemoso- 
paniculatis, paniculis gracilibus amplis multifloris, perianthio subcylindraceo, staminibus 6 
perfectis quorum 3 brevioribus. 
Herba perennis (Galeotti), scandens vel volubilis, prorsus glaberrima, caulibus teretibus gracilius- 
culis. Folia alterna, longe petiolata, subcoriacea, cordato-ovata, 5—6-pollicaria, longissime 
acuminata, acuta, 9-nervia, nervis extimis 2-furcatis, prominenter reticulato-venosa, supra 
interdum maculato-marmorata ; petiolus gracilis, semiteres, usque bipollicaris. Flores mascu- 
ini virides, brunnei (Galeotti), 1-14 lineas longi, subsessiles, racemoso-paniculati ; panicule 
ample, usque ad pedales (Galeo/ti), ramulis gracillimis; bractee minute; perianthii sub- 
cylindracei lobi erecti, oblongi, obtusi, tubum zquilongi; stamina 6, omnia perfecta 3 breviora, 
longiora perianthio paullo breviora. Flores feminei...... —Mart. et Gal. in Bull. Acad. 
Brux. ix. 2 (reprint, p. 20). 
SoutH Mexico, Jalapa at 3000 feet (Galeotti, 5460). Hb. Kew. 
10. Dioscorea galeottiana, Kunth. (Descript. amplif.) 
Pilosula, foliis 13-15-nerviis orbiculari-cordatis, floribus masculinis racemoso-paniculatis, perianthio 
fere 6-phyllo, segmentis angustis patentissimis, staminibus 8 liberis. 
