27G DicrciA. 



2, TRIANDRIA. ' 

 2 Emfetuum. Barren Fl. Cnl. tripartite. Cor. of .3 petals 

 (7 in Fj. B.). Stimi. o (9 in E. B.), upon long filaments. 



Fertile Fl. Cal. tripartite. Cor. of o petals. Style veiv 

 short. Stigma with ti — 9 rays. Berry superior, globose with 

 6 — 9 seeds. 



3. Ruscus. Bprren Fl. Perianth single, of 6 leaves. Fila- 

 Tnf^/^f united into a tube. Aiith. '3 — 6. 



Fertile FL Pm«//</< single, of G leaves. Nectary tuhnlar. 

 Style 1. Stigma 1. Berry superior, 3-celled. Cp//5 2-seeded. 

 {Valeriana dioica, Tkiand. Salix triandria, and lanceolatay 

 Ord. DiANDK.) 



3. TETRANDRIA. 

 5. Myrica. Barren Fl. Scales of the catkin concave. Pc- 

 riantk 0. 



Fertile Fl. Scales of the catkin concave. Perianth 0. 

 Styles 2. Drupe 1 -celled, 1 -seeded. 



4. V.iscuM. Barren Fl. Cat. 0. Pe^a/s 4, dilated at the base, 

 connate, resembling a cal. Anthers sessile, adnate with the 

 petals. 



Fertile Fl. Cal. submarginate. Petals 4, dilated at the 

 base. Style 1. Berry {Drupe) inferior, 1 -seeded. 

 {Rhamnus catharticus, Pentand. Urtica dioica, Moncec.) 

 4 PENTANDRIA. 

 G. HuMULUs. Barren Fl. Perianth single, of 5 leaves. An- 

 thers with 2 pores at the extremity. 



Fertile Fl. Scales of the calkin large, persistent, concave, 



entire, single-flowered. Perianth 0. Styles 2. Seed I. 



{Ribcs alpin., Pkntand. Bn/oniu dioica , Moncec. Salix pen- 



tandra, Ord. Diandr.) 



5. OCTANDRIA. 



8. Rhodiola. Barren Fl. Co/, quadripartite. PeiulsA. Nec- 

 taries 4, emarginate. 



Fertile Fl. Cal. quadripartite. Petals 4. Nectaries 4, 

 emarginate. Germens 4. Caps. 4, many-seeded. 

 7. PoPULOs. Barren Fl. S'ca/w of the ca/^in lacerated. An- 

 thers 8 — 30, arising from a turbinate, oblique, entire, single 

 perianth. 



Fertile Fl. Scales of the catkin lacerated. Perianth tur- 

 binate (entire) ? Stigmas 4. Caps, superior, 2-celled, 2- 

 valved, many-seeded. Seeds couiose. 



6. ENNEANDRIA. 



9, Mercuriaj.is. Barren Fl. Perianth single, tripartite. Starn. 

 9 — 12. ylnihers globo.'ic, 2-Iobcd. 



