MONOOOTYLEDONES 



219 



poisonous. Some of the species serve to bind together the sand 

 on the seashore, and thus prevent the encroachment of the sea 

 on the neighbouring coast. (See also Properties and Uses of 

 the Cyperacece.) 



Artificial Analysis of the Orders in the Class. 



MONOCOTTLEDONES. 



[Modified from Lindley.) 

 Sub-Class I. — Petaloide^. 



Orchidacece. 



1. Flowebs with an evident Perianth. 

 A. Ovary inferior [InfercB or JEpigyncB). 



tb. Flowers gynayidrous. 



Ovary 1-celled. Placentas parietal . 

 Ovary S-celled. Placentas axile 



b. Flowers not gynandrous. 



1. Veins of leaves diverging from the midrib, 



and parallel to each other. 

 Embryo enclosed in endosperm. 

 Anther 2-celled. Filament one, not pe- 



taloid 



Embryo not enclosed in endosperm. 

 Anther 1-celled. Filament one 

 Anther 2-celled. Filaments more than one 



2. Veins of leaves diverging from the base, and 



parallel to the midrib. 

 Stamens 3. 



Anthers extrorse 

 Anthers introrse 

 Stamens 6. 



Anthers extrorse 

 Anthers introrse. 

 Leaves equitant 

 Leaves flat. 

 Fruit 1-celled 

 Fruit 3-celled. 



Outer whorl of the perianth petaloid 

 Outer whorl of the perianth not pe- 

 taloid 



Stamens more than 6 .... 



Zingiheracece. 



Marantacece. 

 MusacecB. 



IridacGCB. 

 Burmaniiia ce(s . 



Burmanniacece. 



ScBmodoracece. 



Taccacece. 



AmaryllidacecE. 



BromeliclcecB. 

 Hydrocharidaceest 



