222 



MANUAL OF BOTANY 



Sub-Class II.— Glumace.i:. 



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

 silar, within the albumen .... Cyperacea. 



Stem hollow. Leaf-sheaths slit. Embryo basilar, 



outside the albumen Graminacece. 



Sy7io]psis of the British Natural Orders of Class X. 



MONOCOTYLEDONES. 



A. Leaves net- veined. 



1. Floral envelopes whorled. 



Perianth inferior. Flowers j)erfect . 

 Perianth superior. Flowers dioecious 



2. Perianth absent. Flowers on a spadix 



(monoecious) 

 B. Leaves parallel-veined, persistent. 



.; 



Floral envelopes whorled or absent. 



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



mas distinct. 



Perianth 4-parted or 0, or inconspicuous i 



Perianth 6-parted. 



Placentation diffuse ..... 

 Placentation axile or basal. 



Flowers consi)icuous .... 

 Flowers inconspicuous .... 



b. Ovary single. 

 Ovary inferior. 



Stamen 1. Flowers gynandrous 

 Stamens free from the style. 

 Perianth petaloid. 



Stamens 3, anthers extrorse 

 Stamens 6, anthers introrse 

 Three outer segments of perianth her- 

 baceous 



Ovary superior. 



Perianth hex'apetaloid. Flowers perfect. 



Perianth conspicuous .... 



Perianth scale-like .... 



Perianth more or less glumaceous, or 



partly coloured, or wanting. 



Flowers perfect. Perianth 6-parted. 



stamens 6 . 



Liliacece 



{TrilUacece). 

 Dioscoreacece. 



Aroidacete 

 {Aroidece). 



Xaiadacece 



{Potamogctonece). 



Butomacece. 



Alismacece. 

 Juncaginacece. 



Orchidacece. 



IridacecB. 

 Amaryllidacece. 



Hydrocharidacecc. 



Liliacece. 

 AroidacecB (Acorece). 



Juiicacece. 



