(276) R. CHODAT ET E. HASSLER. PLANTÆ HASSLERIANÆ. 111 
90/40 mm. glabra:; racemi masculi axillares simplices graciles 45-50 mm. ; flores 
masculi pedicellati (1,5-2 mm.) bracteolis basilaribus minimis; perigonium 
rotatum basi vix campanulatum, diam. 4 mm.; stamina in centro floris breviter 
monadelpha filamentis crassiusculis perdimidiam partem coalitis, antheris 
ellipsoideis; tubus staminum in centro depressus; flos feemineus deest. 
Affinis D. piperifolie. Willd. 
Suffrutex volubilis 0,5-1 m. flos viridi-rubescens, in dumeto in regione cursus 
superioris fluminis Apa, Dec., n. 815%. 
Dioscorea multiflora Mart. 
Mss; Gris. Flor. Bras. II, 1, p. 35. 
Var. gouanioides nob. 
Folia elliptica vel ovato elliptica breviter vel longius apiculata nervis robustis 
subparallelis erecto-arcuatis percursa nervillis transversalibus conjunctis disco- 
loria, supra opaca, subtus glaucescentia 120/105 115/85 70/50 70/45 mm., 
chartacea, petiolo 15-25 mm., 1,5 mm. lato; apex angustata 5-10 mm. longa: 
panicula ampla simpliciter racemosa 30-40 cm. longa 15-20 cm. lata; racemi 
singuli ec. 10 cm., longi; flores masculi sessiles infundibiliformes 2,5/2,5 mm., 
perigonio ad medium diviso filamentis staminum ad 1/3 corollæ affixis gracilibus, 
antheris ellipsoideis quam filamenta 5-6 X plo brevioribus, lobis paulo brevio- 
ribus. 
Frutex scandens 4-6 m. flos flavo-virens, in silvis in regione cursus superioris 
fluminis Apa, Dec., n. 8298. 
Dioscorea Concepcionis nob. spec. nov. 
Sect. Cryptantha Uline. Nat. Pflanzfam. Nachtr., p. 82. 
Folia cordata vel subtriloba auriculis lateralibus rotundatis lobo mediano 
acuto interdum acutissimo suhcoriacea glabra, petiolis 20-30 mm. vel in speci- 
minibus masculis minoribus; racemi masculi paniculati, floribus sæpe 2-3 aggre- 
gatis quique 5-9 cm. longi; flores masculi campanulati sessiles inaperti globosi 
2-3 mm. longi, lobis ad 1/3 pertinentibus; stamiua ad medium tubi inserta 
filamentis antheris 2-3 plo longioribus, medium loborum attingentibus; racemi 
fœminei fructiferi elongati pedicellis lignescentibus recurvis imbricati; capsulæ 
obovato- cunealæ 25/14 mm.; semina nunc leviter 4/5 mm. reniformia ala 
superiori angusta À mm. inferiori elongata 6 mm. 
Suffrutex volubilis 2-8 ın. flos g' flavo-virens, in dumetis pr. Chololo, in valle 
fluminis Y-aca, Dec., n. 6861 ; in dumetis insulæ Chaco-y pr. Concepcion, Sept., 
n. 7368, 
Dioscorea Hassleriana Chod. spec. nov. 
Folia deltoidea vel cordata sensim acuta nervis palmatis 5-7 dorso pubescentia, 
petiolo 10-15 mm. longo, limbo 60/42 60/48 50/30 mm.; inflorescentiæ musculinæ 
dupliciter racemosæ 15-20 cm. longæ, 10-15 racemos partiales ferentes 
70-100 mm. longos; flores basi braeleolati brevissime pedicellati, ec. 4 mm. 
longi, tubulosi ore leviter expanso lobis brevibus, tubo 6-7 plo brevioribus; 
stamina supra partem tertiam ıinserta filamentis longis tubo paulo brevioribus. 
antheræ late ellipsoideæ ; fl. fæminei ignoti. 
Herba an suffrutex volubilis, 4-3 m. flos 9’ brunneo-virens, in dumetis pr. 
Chololo in valle fluminis Y-aca, Dec., n. 6853. 
Var. triloba nob. 
Folia magna triloba supra glabra subtus præcipue in nervillis puberula, 
petiolo apice dilatato, inde folium basi obsolete pellatum, limbi 15/16 em. vel 
minora, petiolus 5-6 mm. longus, panicula axillaris multi racemosa, racemis 
44-15 em. longis, rhachi puberula, flores  tubuloso-urceolati, lobis reflexis, 
filamentis supra partem quarlam insertis, vittiformia tubum superantibus, 
antheris brevibus connectivo lato affıxis. 
