192 ANALYSIS OF THE NATURAL ORDERS. 



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

 4 Ovary compound, — wholly adherent to the 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 with the petals or of a different number. (6) . 

 6 Leaves opposite on the stems, (z) 

 6 Leaves alternate, — 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, 6imple. (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 numbc* (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 one. (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. KanttncttlaoevE. 1 



a Petals 3, persistent, withering. Floating leaves peltate. Cabombace^j. 7 



a Petals numerous, deciduous. Leaves all peltate. Nelumbiace^e. 8 



b Sepals 4 — 6, equal. Petals GO, imbricated in the bud. Nymphs aoe^e. 9 



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



b Sepals 5, unequal. Petals 5, convolute. Flowers of 2 sorts. Cistace.*:. 17 



b Sepals 2, with— 5 petals imbricated in the bud. Portulacace^:. 22 



— i petals usually crumpled in the bud. Papaverace^e. 11 



c Filaments united into a tube. Anther 1-cclled. Malvaceae. 24 



d Sepals 2, persistent, capping the pyxis. Portulacace^e. 22 



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. Kosace^e. 47 



— Petals convolute in bud. Fruit compressed. Loasaoe.e. 63 



e Stamens opposite to the imbricated petals. Pistil 1 only. _ Bep.beridace.e. 6 



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



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



f Stamens 4, or 8—32. Pod 1-celled. Capparidacxs:. 14 



g Sepals and petals in 3s. Stamens 6. Small herb. Liunantfiace^e. 36 



g Sepals and petals in 4s. Stamens 8. Climbing. Sapi.ndace^e. 41 



g Sepals, etc., in 5s. — Stam. 5, monadelphous. Climbing. PassiflohacejE. 57 

 — Stam. 5, distinct. Greenish. Climbing. Order. 104 



— Stam. 5, distinct. Yellow. Erect. Turneraoe-e. 56 



— Stam. 5, distinct. Cyanic. Erect. Droserace^e. 19 



— Stam. 3 — 15. — Fls. £ ^ivery many, minute. Cistace.*. 17 

 — Fls. monoecious. Okdek. 113 



