192 ANALYSIS OF THE NATURAL OBDBES. 



4 Ovaries simple, distinct or solitary. Vines or erect shrubs, (w) 

 4 Ovary compound, — ^wholly adherent to tl)e calyx, (x) 



— free from the calyx or nearly so. (5) 

 5 Stamens opposite to the petals and of the same number, (y) 

 5 Stamens alternate Tvith the petals or of a different number. (6) 

 6 Leaves opposite on the stems, (z) 

 Leaves altemato, — compound, (yy) 

 — simple, (zz) 

 7 Polyandrous,— stamens 3 to 10 times as many as the petals, or more, (m) 

 7 Oligandrous, — stamens 1 — 2 times as many as the petals, or fewer. (8) 

 8 Pistils separate and distinct, few or solitary, simple, (n) 

 8 Pistils united, — ovary compound, free from the calyx. (9) 



— ovary compound, adherent to the calyx, (o) 

 9 stamens opposite to the petals and of the same number, (p) 

 9 Stamens alternate with the petals or of a greater number-, (q) 

 11 Flowers regular or nearly so. Fruit never a legune. (13) 

 11 Flowers irregular (rarely regular and the fruit a legume). (12) 

 12 Stamens numerous, 3 or more times as many as the petals, (k) 

 12 Stamens few and definite, 5 — 12. (1) 

 13 Stamens 3 to 10 times as many as the petals. (15) 

 13 Stamens few and definite. — Ovary free from the calyx. (14) 

 — Ovary adherent to the calyx, (j) 

 14 Pistils one, or indefinite (1 — ^15), distinct, simple, (e) 

 14 Pistils definitely — 2 united, the short styles combined into one. (f) 

 — 3 or 4 united, styles or stigmas 3, 4 or 6. (g) 

 —5, distinct or united, with 5 distinct styles, (h) 

 — 5 united and the styles combined in orie. (i) 

 15 Stamens hypogynous, — on the receptacle. (16) 

 15 Stamens perigynous, — on the corolla at base, (c) 

 — on the calyx at the base, (d) 

 16 Pistils few or many, distinct (at least as to the styles), (a) 

 16 Pistils (and styles if any) completely united, (b). 

 a Petals 5 or more, deciduous. Leaves not peltate. RAHTmoui.A0E.B. 1 



a Petals 3, persistent, withering. Floating leaves peltate. Cabombaoe.s. 7 



a Petals numerous, deciduous. Leaves all peltate. NELraiBiAoaffl. 8 



b Sepals 4 — 6, equal. Petals 00, imbricated in the bud. Ntmph.eacejc. 9 



b Sepals 5, equal, Petals 5, imbricate. Leaves tubular. Sabraoemiaoe^. 10 



b Sepals 6, unequal. Petals 5, convolute. Flowers of 2 sorts. Cistacej;. IT 



b Sepals 2, with — 5 petals imbricated in the bud. PoETuiAOACE.a;. 22 



— i petals usually crumpled in the bad. Papaveeaoejb. 11 



c Filaments united into a tube. Anther 1-oclled. Maltacej;. 24 



d Sepals 2, peraistent, capping the pyxis. Poktulaoaoba 23 



d Sepals 3 — 5, valvate in the bud. Pod long, 2-carpeled. Tiliace.e. 26 



d Sepals 3 — 5. — ^Petals imbricate in bud. Fruits simple. EosAoiia!. 47 



— Petals convolute in bud. Fruit compressed. LoAaAOE.s. 53 



e Stamens opposite to the imbricated petals. Pistil 1 only. Berbebidaoe.«. 6 



e Stamens alternate with the petals or more numerous. ' Kanunohlaok^. 1 



f Stamens 6 (tetradynamous). Pods 2-celled. Gbdoifek^. 13 



f Stamens 4, or 8—32. Pod 1-oelled. Cappakidaok^. 14 



j g Sepals and petals in Ss. Stamens 6. Small herb. Limnanthaoi!.*. 33 



I g Sepals and petals in is. Stamens 8. Climbing. Safindace^. 41 



' g Sepals, etc., in 5s. — Stam. 5, monadelphons. Climbing. Passiflohaoe^. 57 



— Stam. 5, distinct. Greenish. Climbing. Okdeb- 104 



— Stam. 5, distinct. Yellow. Erect. Tubnebaoe^. 56 



— Stam. 5, distinct. Cyanic. Erect. Dboskbace.*. 19 



— Stam. 3 — 15. — ^Fls. '^ , very many, minute. Cisiaoe^. 17 

 — Fls. monoecious. Okbbh. 113 



