SYNOPSIS OF THE NATURAL SYSTEM. 



Sec. I. Classes and Subclasses. 



1 Flowering plants (PHJENOGAMIA). 2 



I Flowerless plants (CRYPTOGAMIA). 5 



2 Lvs. net- veined ( 229, I). Fls. never wholly trimerous (EXOGENS). 3 

 2 Lvs. parallel- (rarely net-) veined. Fls. trimerous (ENDOGENS). 4 



3 Stigmas present. Sds. enclosed in a pericarp. 6 ANGIOSPERMS. I 



3 Stig. none. Sds. quite naked. (CONIFERS. CXXXI) GYMNOSPERMS. II 

 4 Sepals and petals verticillate or 0. Glumes 0. 143 AGLUMACE^. Ill 

 4 Sep. and pet. none. Glumes altern. Fr. 1-s'ded. 163 GLUMACEJE. IV 



5 Stems and leaves distinguishable. 164 - - - - ACROGENS. V. 



5 Stems and leaves undistinguishable. 168 - - - THALLOGENS. VI 



6 Petals (or petaloid sepals) distinct. 7 Polypetalae. I 



6 Petals united (at least at their bases). 76 - - - - Moiiopetalae. II 

 6 Petals 0. Sepals more or less united or none. 116 - Apetalae. Ill 



Sec. II. Orders of the Polypetalous Exogens. 

 7 Herbs (164), annual, biennial or perennial, rarely suffruticose at base. - - 8 



7 Shrubs and trees (164). 54 



8 Leaves alternate or all radical. ---------------- 9 



8 Leaves cauline, opposite, at least the lower ones. -- -- 38 



9 Stipules (249) present. 34 



9 Stipules none. ---------- 10 



10 Polyandrous, stamens (20200) indefinite. 11 



10 Oligandrous, stamens (few) definite. --- 17 



II Stamens (hypogynous) inserted on the receptacle (74, Id). ----- 12 

 11 Stamens (perigynous) inserted on the calyx or corolla. -------16 



12 Ovaries simple ; fruit acheniate, folliculate, &c., never capsular. ----- 13 



12 Ovaries united into a compound capsule. - 15 



13 Leaves never peltate. Seeds albuminous. RANUNCULACEJE. I 



13 Leaves centrally or subcentrally peltate. Aquatic. 14 



14 Sepals and petals definite (2 4). Seeds albuminous. - - CABOMBACEJE. VII 



14 Sepals and petals indefinite, numerous. Albumen 0. - - - NELUMBIACEJE. VIII 



15 Sepals and petals indefinite, numerous. ----- NYMPH.EACE.E. IX 



15 Sepals and petals 5. Lvs. pitcher- or trumpet-form. - SARRACENIACE.K. X 



15 Sepals 2. Juice usually colored. -------- PAPAVERACE.E. XI 



16 Sepals and petals 5 10. r 75 



16 Sepals and petals indefinite and confounded. CACTACE.E. LXI 



17 Flowers very irregular. - 18 



17 Flowers regular or nearly so. ------20 



18 Filaments 6 or 8, united below into one or two sets. 19 



L8 Filaments 5, cohering only at top. ------ BALSAMINACEJE. XXVIII 



18 Filaments 8, distinct. Leaves peltate. TROPJSOLACE.E. XXIX 



18 Filaments 8, distinct. Lvs. biternate. Vine with tendrils. SAPIKDACE^. XLI V 

 19 Leaves much dissected and divided. ------- FUMARIACE^E. XII 



19 Leaves simple, entire. ---------- POLYGALACE.E. XVI 



20 Ovaries superior (97), free from the calyx or nearly so. - --------21 



20 Ovaries inferior, or wholly adherent to the calyx (97). 32 



21 Sepals 2. Fleshy herbs. PORTULACACEJE. XXIV 



21 Sepals 3 or more. - 22 



22 Sta. (hypogynous) inserted on the receptacle or torus. 23 



22 Stamens (perigynous) inserted on the calyx. 31 



23 Sepals, petals and stamens symmetrical (61, c). - - - - 24 



23 Sepals, petals and stamens unsymmetrical. Fruit a pod. ----- 29 



24 Carpels solitary, fruit simple, one-celled. BERBERIDACE^E. VI 



24 Carpels 3 5, more or less united. --------- 25 



25 Leaves simple. ._.---------------- 26 



25 Leaves compound. ~ ~ ~ \ 



26 Ovary and capsule one-celled. Aquatic. ----- DROSERACE.E. XVIII 



26 Ovary and capsule 5 10-celled. LINACEJE. XXVI 



27 Plants aquatic. Fr. 2 5 fleshy achenia. Juice acid. LIMNANTHACEJE. XXX 



27 Plants not aquatic. --- 28 



28 Leaves palmately 3-foliate. Juice acrid. ----- OXALIDACEJE. XXXI 



28 Leaves pinnate, with pellucid resinous dots. - - - - RUTACE.ZE. XXXIV 



29 Flowers cruciform (105, 1). Pod s2-carpeled, 2- celled. - CRUCIFERJE. XIII 



29. Flowers not cruciform, ---- 30 



12 



