222 



MANUAL OF BOTANY 



Sub-Class IL — Glumace^. 



Stem solid. Leaf-sheaths not slit. Embryo ba- 

 silar, within the albumen .... 

 Stem hollow. Leaf-sheaths slit. Embryo basilar, 



outside the albumen 



Cyperacece. 

 Graminacece. 



Synopsis of the British Natural Orders of Class X 



MONOCOTYLEDONES. 



A. Leaves net-veined. 



1. Floral envelopes whorled. 



Perianth inferior. Flowers perfect . | 



Perianth superior. Flowers dioecious 



2. Perianth absent* Flowers on a spac 



(monoecious) ... . .> 



B. Leaves parallel- veined, persistent. 

 1. Floral envelopes whorled or absent. 



tt. Ovaries more than one, with styles or stig- 

 mas distinct. 



Perianth 4-parted or 0, or inconspicuous J 



Perianth 6-parted. 



Placentation diffuse 



Placentation axile or basal. 

 Flowers conspicuous 

 Flowers inconspicuous .... 



b. Ovary single. 

 Ovary inferior. 

 Stamen 1. Flowers gynandrous 

 Stamens free from the style. 

 Perianth petaloid. 



Stamens 3, anthers extrorse 

 Stamens 6, antherfe intforse " 

 Three outer segments of perianth her- 

 baceous 



Ovary superior. 



Perianth hexUpetaloid. Flowers perfect. 

 Perianth conspituous 

 Perianth scale-like .... 

 Perianth more or less glumaceous, or 

 partly coloured, or wanting. 

 Flo-s^ers perfect. Perianth 6-parted, 

 stamens 6 . 



Liliacece 



[T^'illiacece). 

 Dioscoreacece. 



Aroidaceie 

 {Aroidece). 



NaiadacGce 



{Potamogotonece). 



Butomacece. 



Alismacece. 

 Jiincaginacece. 



OrchidaceiS. 



In'dacecB. 

 AmarylUdacecs. 



Hydrocharidacece. 



Liliacecs. 

 AroidacecE {Aco7-ece). 



Juncacecs. 



