ANALYSIS OF THE NATURAL ORDEES. 11 



C. COHORT 3. APETALOUS EXOGENS. 



5 Plants herbaceous, the flowers not in aments (except Humulus, 115).. 04} 

 1 Plants woody, shrubs or trees.. (8) 



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



2 Flowers ..chlamydeous, neither calyx nor corolla.. (*) 



8 Calyx tube adherent to the ovary, limb lobed, toothed, or entire (9) 

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



j 4 Ovaries several, entirely distinct, each 1-styled, 1-ovnled . . (g) 

 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, .(e) 



6 Ovary many-OYnled, bearing many seeds.. (d) 

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

 7 Ovary 4- QO-ovuled, 4- 00-seeded. .(A) 

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

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

 8 Flowers imperfect, the sterile only in aments. .(0) 

 8 Flowers imperfect, both the fertile and sterile in amenta.. (a?) 



9 Stamens 1 12, as many or twice as many as the stigmas. . (a) 

 9 Stamens 210, not symmetrical with the 1 or 2 stigmas.. (5) 



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

 10 Styles or stigmas 2. .() 

 10 Styles or stigmas 3 9. . (f) 



11 Calyx free from the ovary.. (p) 

 11 Calyx adherent to the ovary, .(r) 



a Sstigmas and cells of the ovary 1 4. Stamens 1 8 OBDEES 48, or 64 



a Stigmas and cells of the ovary 6. Stamens 6 or 12. . .ARISTOLOCIHACE^E. 102 



b Styles 2. Ovary many-seeded. Stamens 8 1 ORDER 45 



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



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



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



Flowers diclinous. Calyx 4-5-parted, green URTICAOEJE. 115 



d Stamens 4, opposite to the 4 sepals. Leaves numerous ORDER 53 



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 CD. Leaves large and eho wy. Cultivated ORDER 9 



Fruit 3-(rarely &-)seeded, with 3 (often cleft) styles EUFHOF.BIACE.*. 113 



e Fruit 1-seeded. Stipules sheathing the stems POLYGONACE.S. 104 



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



/ Calyx with scarious bractlets outside AMARANTACE/K. 107 



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



/ Calyx naked. Leaves opposite ORDER 19 



f Stamens hypogynous on the torus ORDER 1 



g Stamens perigynous on the calyx ORDER 44 



h Leaves opposite. Fruit circumscissile, a pyxis ORDER 61 



A Leaves opposite. Fruit 4-6- valved, a capsule ORDER 19 



A Leaves alternate . (i) 



i Fruit 5-horned, 5-celled, a capsule ORDER 46 



i Fruit a fleshy 4-10-seeded berry PHYTOLACOACE^B. 105 



i Fruit circumscissile, a utricle AMAHAWTACEJE. 107 



% Flowers on a spadix with a spathe. Monocotyledons ORDER 130 



k Flowers in a long naked spike. Stamens 6 or 7 SAUR0a*'TKu, 1 15 



I Flowers solitary, axillary, minute. Aquatic plants.. (m) 



