459. 
insertis: filamentis anthera subglobosa quadruplo longioribus 
incurvis, spicis capsuliferis simplicibus, capsula oblonga v. obo- 
vato-oblonga utrinque rotundata coriacea, seminibus oblongis basi 
in alam loculo longiorem v. equilongam productis. 
Caulis volubilis, nitide fuscus, inferne 4'^ diam., aculeis 
fortioribus 1'^ longis, internodiis 2— 41^ longis. Folia foliolis 
brevissime petiolulatis, terminali 29^ longo, 49—416'^ lato, late- 
mlibus 18—22/" longis, 8—10/" latis, nervis in illo tribus 
mediis fortioribus,' in his quaternis minus inequalibus; petiolus 
leuis, 1j" longus. Racemi d breviter pedunculati, 5—92^ 
longi, floribus plerisque 2/^ distantibus pubescentibus 4'^ longis, 
bractea lanceolato-acuminata; perigonium tubo campanulato lobis 
lanceolatis acuminatis fere duplo breviori. Spice capsulifere in- 
duso pedunculo 6—4^ longe; capsula 10—412/" longa, 5—96'/^ 
lia, nitide brunnea; semina 6'' longa, 2/^ lata, ala 3—4'^ 
supra loculum producta ipsiusque partem superiorem marginante. 
Lagoa Santa in flora silvestri; fr. Mart. Apr. Species 
similis est D. trisecte Gr., qux glabrifolia et filamentis brevissi- 
mis ad sect. Amphistemon pertinet: ejus synonyma sunt D. tri- 
foliata Gr. l. c. p. 38 (quoad pl. brasiliensem); Helmia Grise- 
laci Kth. enum. 5, p. 436 (nec Dioscorea Grisebachii Kth. l. c. 
p.853). Sub D. trifoliata Fl. bras. latebant plures species ha- 
lito, nec structura similes, ex quibus preterea nunc comparo 
duas Allactostemonis species, scilicet D. trifoliatam Kth. (in Crue- 
Er pl. Trinit. 298), ubi folia glabra pene exlineolata, foliolis 
lieralibus supra (intra medianum et "marginem superiorem) 
eervibus, perigonium d 6-fidum, staminibus 3 fauci insertis 
distantibus , filamentis erectis anthere equilongis, et D. galipa- 
wnsm Kt. (in Fendl. pl. Venez. 1544), cui folia puberula spar- 
sim pellucido-lineolata, foliolis lateralibus intra medianum et mar- 
ginem superiorem enervibus, perigonium d 6-partitum, pedicello 
fere *quilongo suffultum, staminibus 3 infra faucem annulo con- 
liguo insertis, filamentis anthera longioribus. 
