i:52 >SYNOPSIS OP THE NATURAL SYSTEM. 



23 Leaves simple. ... 24 



23 Leaves compound. ... 25 

 24 Petals persistent. Ovary 1-celled. Leaves radical. - - Droserace^. XVIIL 

 24 Petals fuyacioiis. Ovary 5 — 10-ce!led. Leaves cauline. - LinacejE. XXVI. 



24 Petals deciduous. Ovary 5-celled. Leaves cauline. . . .87 - - (LXXVIIL) 



25 .Tuice acrid. Sepals valvate in the bud. - - - I,imnanthace«. XXX. 



25 Juice acid. Sepals imbricate in the bud. - - - - Oxalidace^. XXXL 



25 Juice bitter Leaves pinnate, dotted. ----- Rutace^. XXXIV. 

 26 Flowers cruciform, regular. Stamens tetradynamous. - - CrucifeHjE. XIIL 

 26 Flowers rather irregular. Stamens not tetradynamous. ... 27 



27 Calyx closed in the bud. I'od closed until ripe. Capparidace;e. XIV. 



27 Calyx open in the bud. Pod open before ripe. - - - Resedacete. XV. 



25 Stamens 5, opposite to the five petals. ...73- - - - - - - (LXXXV.) 



28 Stamens alternate with the petals when of the same number. ... 29 



29 Styles 3 — 20, as many as the sepals. - - - - Cbassulaces. LXIV. 



29 Styles 2, fewer than the sepals. Saxifragace.e. LXV. 



29 Styles 4, fewer than the sepals. Parnassia. - - Droserace.e. XVIII. 

 30 Flowers 5-parted, in simple or compound umbels. ... 31 

 30 Flowers 1, 2, 3 or 4-parted, not in umbels. ------ Onagracek. LV. 



31 Styles 2, forming a 2-pariiL)le, dry fruit. - - - Umbellifer^^LXVII. 



31 Styles 3 or 4 (rarely 2), forming a berry or drupe, - Araliace^. LXVIII. 

 32 Flowers both regular and perfect. ... 33 

 . 32 Flowers either irregular or monoscious. ... 34 



33 Stamens 00, united into a column with the 5 styles. Malvaceje. XXXVII. 



33 Stamens 10, united only at base, free from the styles. Oxalidace^. XXXI. 



33 Stamens many or few, distinct, perigynous. - - - Rosace^e. XliVIII. 

 34 Ovary free, 3-celled, forming a capsule. ------- Violacee. XVII, 



34 Ovary free, 1-cellcd, forminsr a legume. ----- LEcuMiN-osfi. XLVII. 



34 Ovary adherent, 3-ce!led. Flowers monoecious. - - - Begoniace^. LVIII. 



35 Leaves furnished with (either large or small) stipules. . . . 3G 



S5 Leaves destitute of stipules. ... 37 

 36 Petals 5, twisted in the bud, larger than the sepals. - GERANiACEiB. XXVII. 

 36 Petals 5, not twisted in the bud, very small. - -• - IllecedracejE. XXII. 

 36 Petals 2 or 3, not twisted. ---------- ELATiNACEiE. XXV. 



37 Flowers very irregular. ---------- PoLVGALACEiE. XVL 



37 Flowers regular, or but slightly unequal. ... 33 

 38 Ovary or ovaries superior — free from the calyx. ... 39 

 38 Ovary wholly adherent to the calyx tube. ... 40 

 38 Ovary adhering to the calyx tube by the angles only. - Melastomace^. LI. 



39 Ovaries many, distinct, simple, caudate. - - - - - RANuxcuLACEiE. I. 



39 Ovary 1, simple. Leaves 2 only in Podophyllum. - Berberidace^. VI. 



39 Ovary compound. ... 41 

 40 Involucre 4-leaved, white, subtending the small cyme. - Cornace^e. LXIX. 

 40 Involucre none. Leaves numerous, simple. ----- OnagracejE. LV. 

 40 Involucre none. Leaves 3 only, compound. Panax. Abaliace^. LXVIII. 



41 Sepals 2, fewer than the petals. ------ PortulacacEjE. XXIV. 



41 Sepals 3—5. Style and stigma 1. ... 42 



41 Sepals 3 — 5. Styles and stigmas several. ... 43 



42 Sepals equal, combined into a tube. -------- Lythhace.e. LII. 



42 Sepals unequal, nearly distinct. ---------- Cistace.e. XIX. 



43 Stamens hypogynous — on the receptacle. ... 44 



43 Stamens perigynous — ^on the calyx. ... 45 

 44 Stem tumid at the nodes. Leaves not punctate. - Caryophyllaceje. XXIII. 

 44 Stem often ancipital. Lvs. with pellucid and black dots. HYPERicACE.iE. XX. 



45 Stamens 20 or more, indefinite. Exotic. - - - MesembryacEjE. LXII. 



45 Stamens fewer than 20, definite. ... 46 

 46 Pistils (follicles) distinct, as many as the sepals. - - Chassulace*. LXIV. 

 46 Pistils 2 — 5, partly or completely united. ... 47 . 



47 Styles 3 — 5. Embryo coiled. ------ CARVOPHYLLACEiE. XXIII. 



47 Styles 2. Embryo straight. ------- Saxifragace;e. LXV. 



48 Leaves opposite. ... 49 



48 Leaves alternate- ... 58 



49 Flowers irregular. --------- Hippocastanaceje. XLIII. 



49 Flowers regular. ... 50 



V _ .. 



