to the Genera.] IV.—TETRANDIA. 41 
‘Berries confluent; ovules and seeds numerous :—[p. 40] 
1010. rp ppenigsgae 
§Marsh herbs with leaves p t 
*Inflorescence never cabtende by a spathe :—[p. 40 
Floating or submerged aquatic herbs ; leaves simple : 
Petioles of upper rosulate floating leaves inflated kad vesicular, the 
lower submerged leaves SPE Opposite .............ce ees 353. Trapa. 
Petioles, if present, not inflated and ves a 
Perianth double, of ras yee coro. 
orolla gamopetalous; leaves ae Mating: cordate, all alter- 
nate; ovary 1-celled 601. Limnanthemum. 
Corolla of 2-4 free petals; leaves small, su ubmerged, narrow 
linear, usually whorled, rarely alternate ; ovary 4- or 2-celled :-— 
vules solitary, pendulous in each cell of the inferior ovary ; 
nous scales absent . 318. Myriophyllum. 
Plate several on axial placentas in eee cell of the free 
ovary at base of calyx-tube; hypogynous scales 4, 2-fid 
343. pbs fxr ss 
Perianth single, of 4 green, valvate BSN Bio 
0. Potamogeton. 
Terrestrial herbs, shrubs, or trees, or if ovat in or near ponds or 
marshes, the leaves not floating or submerged :— 
Climbing herbs or shrubs, raising themselves by the aid of spirally 
twisted dies leaves simple or compound ; petals valvate, stamens 
opposi site petals ode bil idsies nes decane 188. Vi 
Erect hesbs, shrubs, or trees, or if climbing raising themse ves by 
voluble stems or by prickles, if with tendrils (Bauhinia sometimes) 
these simply ee or subcireinate not spiral :— 
aves compoun 
Leaflets gland- dotted phomle ls Uiuisll Seok aek ssi 133. Zanthoxylum. 
Leaflets not gland-dot — 
5-celled ; seeds winged.........+++-++sreeer++* 166. Cedrela. 
g' 
Ovary 1-celled ; seeds not winged :— 
Ovule and seed solitary ; unarmed trees with once pinnate 
210. Rhus. 
le 
digitately twice heat se nt leaves... 
Leaves eran — 
tLeaves alternate :—{p. 4) 
sPesieia wt :—{p. 42] 
Seeioe anth tubular and —_ ected above the ovary; 
1 oe h-lobes[p. 42] 807. Eleagnus. 
