BLAKE: NEOMILLSPAUGHIA 81 
and usually eight stamens, while in the latter tribe the perianth 
is six-parted and the stamens, three, six, nine or many. As shown 
above, however, Podopterus is nearly always pentamerous in respect 
to its perianth and octandrous, the only specimens on record with 
hexamerous flowers being those from which the original descrip- 
tion was drawn. Dammer describes the perianth of Antigo- 
non as penta- or hexamerous, and figures it as hexamerous, but 
the normal number of perianth parts is certainly five, as given by 
Bentham and Hooker, and I have seen no specimens with six 
sepals. In his key to the tribe Coccolobeae, rightly including 
Podopterus, Dammer keys out Antigonon as having “ Blh. [Bliiten- 
hiille] ohne Fliigel,”’ as opposed to the genera Brunnichia and 
Podopterus which have ‘“‘ Blh. mit Fliigeln,’”’ but in his description 
of the genus he says “die 3 dusseren Bliitenhiillb. bei der 
Fruchtreife . . . Fliigel bildend.’’ The distinction obviously 
intended is that in Antigonon the outer perianth segments lack 
dorsal wings and the tube is wingless, while one or both of these 
features are present in the two allied genera. The distinguishing 
characters between the genera considered above, with their close 
ally Brunnichia—including all the genera of the tribe Coccolobeae 
as defined by Dammer, with the exception of Coccoloba and 
Muehlenbeckia—may be expressed in the following key: 
Perianth tube in fruit strongly accrescent, corky or coriaceous, 
fouger _ the _— —s _ ee one- or two- 
winged, t! 
not winapi Guteecas, climbing ty tenia: perintah seg- 
then erect; albumen six-sulcate by the intruded testa, other- 
wise not ruminate; embryo marginal, in one of the lobes, 
straightish. 1. Brunnichia. 
Perianth tube scarcely accrescent in fruit, not corky or coria- 
" eeous, much shorter than the limb, not including the 
achene, wingless or three-w: 
Perianth segments without ‘Gants — 
Perianth segments five, rarely ‘‘six;’’ filaments nor- 
mally eight, united at base or to ge into a ring; 
ovule at first pendulous on a basal funicle slightly 
longer than itself, later erect; achene broadly ovoid, — 
subterete — logis y three-angled above, gla- 
brous; tral. flattish, th tyled t 
cordate at iat: albumen strongly ruminate; plants 
woody only at base, climbing by tendrils. 2. Antigonon. 
