CL. XXII.] DKECTA. 367 



Fertile flowers. Calyx of six leaves. Corolla none. Style one. 

 Berry superior, three-celled. Seeds in pairs. 



( Valeriana dioica and some species of SalixS) 



Order IV. TETRANDRIA. Four Stamens. 



5. HIPPO'PHAE. Barren flowers. Calyx deeply cleft. Corolla 



none. 



Fertile flowers. Calyx tubular, cleft. Style one. Berry su- 

 perior. Seed solitary, oblong. 



6. MYRI'CA. Barren flowers in a catkin. Calyx a concave scale. 



Corolla none. 



Fertile flowers in a catkin. (7a&/ a concave scale. Corolla 



none. Sto/fes two. Berry superior. Seed solitary, globular. 



4. VrSCUM. Barren flowers. Calyx none. Corolla of one petal, 



deeply divided into four segments. Anthers sessile on the 



segments of the corolla. 



Fertile flowers. Calyx a slight border. Corolla with four seg- 

 ments. Style none. Berry inferior. Seed solitary, compressed. 



(Rhamnus catharticus. Euonymus europceus. Urtica dioica.) 



Order V. PENTANDRIA. Five Stamens. 



7. HU'MULUS. Barren flowers. Calyx five-leaved. Corolla 



none. Anthers with two terminal pores. 



Fertile floioers in a catkin. Calyx an oblique undivided scale. 

 Corolla none. Styles two. Seed one. 



(Ribes alpina. Bryonia dioica. Salix pentandra.) 



Order VI. HEXANDRIA. Six Stamens. 



8. TA'MUS. Barren flowers. Calyx none. Corolla with six deep 



segments. 



Fertile flowers. Calyx none. Corolla with six deep segments. 

 Style three- cleft. Berry inferior, three- celled. Seeds in pairs. 



{Tiumex Acetosa and Acetosella.) 



Order VII. OCTANDRIA. Eight Stamens. 



10. RHODI'OLA. Barren flowers. Calyx with four deep seg- 



ments. Petals four. Nectaries four-notched. 

 Fertile flowers. Calyx, petals, and nectaries, the same. Pistils 

 four. Capsules four. Seeds numerous. 



9. Pp'PULUS. Barren flowers. Catkin imbricated. Calyx a 



jagged scale. Corolla turbinate, oblique, undivided. 

 Fertile flowers. Catkin, calyx, and corolla, the same. Stigmas 

 four or eight. Capsule superior, one-celled, two-valved. Seeds 

 with a tuft of hairs. 



Order VIII. ENNEANDRIA. Nine Stamens. 



11. MERCURIA'LIS. Barren floioers. Calyx with three deep 



segments. Corolla none. Stamens from nine to twelve. 

 Anthers of two globular lobes. 



Fertile flotvers. Calyx and corolla the same. Styles two. Cap- 

 sule two-lobed, two-celled. Seeds solitarv. 



