ANALYSIS OF THE NATURAL ORDERS. 217 



C. COHORT 3. APETALOUS DICOTYLEDONES. 



IMaute herbaceous, the flowers not in aments (except Humulus, 114). .(3) 

 Plants woody, shrubs or trees . . (8) 



2 Flowers with a regular calyx (or a calyx-like involucre). (3) 



2 Flowers achlamydeous, neither calyx nor corolla, .(k) 



3 Calyx tube adherent to the ovary, limb lobed, toothed, or entire .(fl) 



8 Calyx free from the ovary, sometimes enclosing it.. (4) 



1 Ovaries several, entirely distinct, each 1-styled, l-ovuled..(gr) 

 4 Ovary 1 only, simple or compound.. (5) 



5 Style or stigma 1 only. .(6) 



5 Styles or stigmas 2 12. .(7) 



6 Ovary 1-ovuled, bearing but 1 seed, .(if) 



6 Ovary many-ovuled, bearing many seeds. . (rf) 



7 Ovary 1-3-ovuled, 1-3-seeded. .(e) 



7 Ovary 4- 00-ovuled, 4- CD-seeded, .(h) 

 8 Flowers not in aments, with the leaves opposite. .() 

 8 Flowers not in aments, with the leaves alternate.. (10) 

 8 Flowers imperfect, the sterile only in aments. .() 

 8 Flowers imperfect, both the fertile and sterile in aments.. (c) 



9 Stamens 112, as many or twice as many as the stigmas. . (a) 

 9 Stamens 210, not symmetrical with the 1 or 2 stigmas, .(ft) 



10 Style or stigma 1. Fruit 1-seeded. . (11) 

 10 Styles or stigmas 2. .(s) 

 10 Styles or stigmas 39. . (Q 



11 Calyx free from the ovary, .(p) 

 11 Calyx adherent to the ovary, .(r) 



a Stigmas and cells of the ovary 14. Stamens 18 ORDERS 48, or 54 



a Stigmas and cells of the ovary 6. Stamens 6 or 12. . .ARISTOLOCHIACEJE. 102 



b Styles 2. Ovary many-seeded. Stamens 810 ORDER 45 



b Style 1. Ovary 1- or 2-seeded. Stamens 5 SANTALACE^E. 110 



e Flowers perfect. Calyx 4-lobed. Stamens 1 4 ORDER 44 



e Flowers perfect. Calyx entire, funnel-shaped, colored. .NYCTAGINACE^E. 101 



e Flowers diclinous. Calyx 4-5-parted, green URTICAOKS. 114 



d Stamens 4, opposite to the 4 sepals. Leaves numerous ORDER 5C 



d Stamens 4, opposite to the 4 sepals. Leaves about 6 ORDER 145 



d Stamens 5, alternate with the 5 sepals ORDER 81 



d Stamens CO. Leaves large and showy. Cultivated ORDER 9 



Fruit 3-(rarely 6-)seeded, with 3 (often cleft) styles EUPHORBIACEJE. 113 



e Fruit 1-seeded. Stipules sheathing the stems .POLYGONAOE^E. 104 



Fruit 1-celled, mostly 1 -seeded. Stipules none. (/) 



f Calyx with scarious bractlets outside AMARANTACE^E. 107 



/ Calyx naked (double in 1 genus). Lvs. alternate. . CHENOPODIACE.E. 106 



/ Calyx naked. Leaves opposite ORDER 18 



g Stamens hypogynous on the torus ORDER 1 



g Stamens perigynous on the calyx ORDER 44 



h Leaves opposite. Fruit circumscissile, a pyxis ORDER 61 



h Leaves opposite. Fruit 4-5-valved, a capsule ORDER 19 



h Leaves alternate .. (i) 



i Fruit 5-horned, 5-celled, a capsule ORDER 40 



i Fruit a fleshy 4-10-seeded berry PHTTOI.ACCACEJB:. 105 



i Fruit circumscissile, a utricle AMARASTACE^E. 107 



4 Flowers on a spadix with a spathe. Monocotyledons ORDBS 180 



It Flowers in a long naked spike. Stamens 6 or 7 SAURTTRI OKLH, 1 1 5 



ft Flowers solitary, axillary, minute. Aquatic plants. . (tn) 



