SYNOPSIS OF THE GENERA. XXXVll 



Page 



169. SAGITTARIA. Perianth of 6 segments, the 3 inner coloured. 

 St. very numerous. Germens superior. Carpels very 

 numerous, seated upon a globose receptacle, each with a 

 single style. 



B. Barren flowers in catkins or lax spikes. 

 138. CUPULIFERJE. Fruit solitary, or several collected together, 



surrounded by a prickly, leafy, or coriaceous involucre. 

 149. BETULA. Barren and fertile ft. in catkins. St. 1012, 



inserted 011 the scales of the catkin. Fertile fl. 3, within 



a 3-lobed scale. Styles 2. Fruit winged. 



Order 6. MONADELPHIA. 



154. PINUS. Fruit in cones. Barren fl. in racemose catkins. 



Class 22. DICE CIA. 



Order 1. MONANDRIA. 



149. SALIX. Fl. in catkins. 



Order 2. DIANDRIA. 



149. SALIX. Fl. in catkins. 



Order 3. TRIANDRIA. 



163. Ruscus. Fl. on the leaves. St. 3. Perianth 6-lobed 

 Style 1. Berry 3-celled. 



146. EMPETRUM. Perianth of many imbricated scales. St. 3 9. 



Filaments slender. Germen superior, globose. Style 

 short. Stigma peltate. Fruit a berry. 

 (See Valeriana and Salix.) 



Order 4. TETRANDRIA. 



148. HIPPOPHAE. Barren fl. with a 2-lobed perianth. Fertile fl. 

 with a tubular bifid perianth. Stigma long. Scaly shrubs. 



147. URTICA.. Perianth single. Barren one 4-lobed. Fertile 



2-leaved. Achene superior. Stigma 1, sessile. 

 (See Myrica and Salix.) 



Order 5. PENTANDRIA. 



148. HUMULUS. Barren fl. Perianth single, 5-leaved. Anthers 



with 2 pores. Fertile fl. in a catkin with large scales. 

 Perianth none. Germen 1 -seeded. Styles 2. 

 (See Jf?t&.) 



