APPENDIX A 



493 



BiCORNES - 



Primulales 



Persoxatae 



Verben.ales 

 Synandrae 



(Dicotyledoneae — Sympetalae). 



[a) Pentacyclicae. 



Ericaceae - - (33) Heath, (34) Bilberry. 

 Primulaceae - (35) Primrose. 



(b) Tetracyclicae. 



/Solanaceae - 

 IScrophulariaceac 

 Labiatae 

 Compositae - 



(36) Nightshade, (37) Potato. 

 (38) Fig^'ort, (39) Speedwell. 

 (40) Dead-Nettie, (41) Sage. 

 {42) Groundsel, {43) Ox-eye, 



(44) Centaurs^ (45) 



Dandelion. 



MONOCOTYLEDONEAE. 



These Plants are characterised by the embP)'o bearing only one 

 cotyledon. The leaves are as a rule alternate, with simple form, 

 parallel venation, and a broad sheathing base. The stem and root 

 show no secondary thickening of the type usual in Dicotyledons, 

 their vascular strands having no cambium. The flower is constructed 

 usually of five alternating whorls of parts, and each whorl is commonly 

 trimerous. Most of the Monocotyledons are perennials. They in- 

 clude Grasses, Sedges, Orchids, and Palms. Many are rhizomatous 

 and bulbous plants that are grown for the beauty of their flowers. 



ORDER: LILIALE.S. 



The plants included in this Order are veni- naturally related, though their 

 habit is not uniform. Thej' are mostly perennials, ^^'ith rhizomatous or bulb- 

 ous stock but sometimes they are tree-like {Dracaena), while some are 

 cUmbers [Smilax, Dioscorea). The}- have long entire leaves, with a sheathing 



