358 DIOSCOREACEA. 
pedunculos spe xquilonge ; bracteole parve; perianthii segmenta orbicularia, patentia; 
stamina 6, antheris subsessilibus. Flores feminei racemosi; racemi 4—7-pollicares ; perianthii 
persistentis segmenta ovato-orbicularia; styli ad medium connati, supra medium recurvi, 
stigmatibus bifidis. Capsula (immature tantum vise) obovato-oblonga, breviter pedicellata, 
1-1} poll. longa.— Benth. Pl. Hartweg. p. 73 (1841) ; D. macrophylla, Mart. et Gal. in Bull. 
Acad. Brux. ix. 2 (reprint, p. 21) (1842) ; D. macrophylla, Schl. in Bot. Zeit. 1848, p. 889; 
D. deppei, Schiede, ex Schl. 1l.c.; D. bilibergiana, Kunth, Enum. Pl. v. p. 354 (1850) ; Seem. 
Bot. Voy. ‘ Herald,’ p. 216. 
SoutH Mexico, Panistlahuaca and Tepinistlahuaca (Hartweg, 518), near Jalapa 3000 
feet (Galeotti, 5461), Hacienda de la Laguna (Linden, 46), Vera Cruz to Orizaba (Miiller, 
1391), region of Orizaba (Bourgeau, 2419); CrntrraL America (Barclay)?; Panama, 
Chagres (Fendler, 335, 336), around the city of Panama (8. Hayes, 727). Hb. Kew. 
Seemann records it from Colombia, Guiana, and Brazil; but the specimens appear to 
belong to a different species. A specimen collected by Seemann (n. 1204) in Veraguas, 
without leaves, has male flowers of exactly the same structure; but the racemes are in 
clusters instead of solitary. 
15. Dioscorea multinervis, Benth. (Descript. amplif.) 
Nana glabra, foliis brevissime petiolatis orbiculari-cordatis multinerviis, floribus masculinis sub- 
sessilibus in spicas glomeratis, staminibus 3, floribus femineis in racemis brevibus, stylis alte 
connatis, capsula immatura tuberculata vel echinulata. 
Herba perennis, tuberosa, glabra, caulibus 2—6-pollicaribus, 1—plurifoliatis. Folia alterna, brevis- 
sime petiolata, submembranacea, 9-13-nervia, orbiculari-cordata, 1-3 poll. diametro, apice 
seepissime brevissime acuminata. Flores masculini subsessiles in spicas glomerati, 1-11 lineas 
diametro; spice densiuscule simplices solitariz, bine vel tern, 1-24 poll. longe ; bracteze 
minut; perianthii segmenta lata, apice rotundata; stamina 3, perianthio breviora. Flores 
feminet racemosi; racemi pauciflori (interdum uniflori ex Schlechtendalio) sepe infra semi- 
pollicari; perianthium supra ovarium tuberculatum constrictum ; segmenta elliptica; styli 
connati. (‘Fructus subglobosus, obtuse trigonus ad angulos verrucosus, 3-locularis, loculis 
2-spermis ; semina globosa, ex Schlechtendalio.”)—D. nana, Schl. in Linnea, xviii. p. 112; D. 
schlechtendalii, Kunth, Enum. Pl. v. p. 411. 
SourH Mexico, Morelia (Hartweg, 393), Toluca (Schiede). Hb. Kew. 
16. Dioscorea pallens, Schl. (Descript. amplif.) (Tab. XCII. B.) 
Undique fere glaberrima, foliis 7-nerviis nitidis, floribus masculinis laxiuscule racemosis, racemis 
simplicibus solitariis vel pluribus insigniter angulatim flexuosis, pedicellis ad angulos rhachis 
sepissime solitariis, perianthii segmentis lanceolatis obtusis, staminibus fertilibus 3. 
Herba perennis (Galeotti), volubilis fere omnino glaberrima, caulibus graciliusculis. Folia alterna, 
longe petiolata, membranacea, 7-nervia, nervo utroque extimo 3-partito, vere cordiformia, 2—4- 
pollicaria, longe acuminata, acuta, nitida; petiolus gracilis, lamina paullo brevior. Flores 
masculini rubro-virides (Galeotti), 14-2 lineas longi, laxiuscule racemosi; racemi minute 
puberuli, insigniter angulatim flexuosi, simplices, solitarii vel plures, 3~5-pollicares ; pedicelli 
ad angulos rhachis sepissime solitarii, perianthio zquilongi; bracte anguste lineares, 
pedicellis breviores; perianthium alte 6-partitum; segmenta equalia, lanceolata, obtusa, 
uninervia, stellatim patentia; stamina fertilia 3, perianthio 4-plo breviora cum 8 imperfectis 
alternantia. Flores feminei..... —D., polygonoides, Mart. et Gal. in Bull. Acad. Brux. ix. 
pars 2 (reprint, p. 22), nec H. B. K. 
