220 MANUAL OF EOTAXY 



3. Veins of leaves reticulated. 



Flowers unisexual ..... Dioscoreacece. 



B. Ovary superior [Siiperce). Leaves parallel- 

 veined. 



a. Outer whorl of the perianth herhaceous or 



ghimaceons. 



Carpels more or less distinct. 



Seeds attached over the whole inner walls of 



the fruit BuinmocecE. 



Seeds attached to axile or basal placentas. 

 Flowers conspicuous. Embryo curved, 



without a slit ..... AUsmacece. 

 Flowers inconspicuous. Embrj'o straight, 



with a lateral slit .... Juncaginacece. 



Carpels combined. 

 Inner whorl of the perianth different from 

 the outer. 

 Placentas axile. Anthers 2-celled. Cap- 

 sule 2 — 3-celled ..... CommeJynaceep . 

 Placentas parietal. 



Anthers 2-celled. Capsule 1-celled . Xyridacecp. 

 Anthers 1-celled. Capsule 1-celled . Mayacecu. 

 The outer and inner whorls of the perianth 

 alike. 

 Flowers on a spadix. Embryo with a la- 

 teral slit Aroidacecp. 



Flowers not on a spadix. Embryo with- 

 out a slit . . . . . . Juncacece. 



b. Outer whorl of the perianth petaJoid, or the 



ivhole p)^t(iloid tvhen only one whorl is 

 present. 



Carpels more or less distinct. 



Seeds solitar3^ Flowers on a spadix . . Palmacece. 

 Seeds numerous. Flowers not on a spadix. 



Anthers extrorse ..... Colchicacece. 

 Anthers introrse. 



Perianth of 6 parts. Seeds without al- 

 bumen Bvtomacece. 



Perianth of 2 parts. Seeds with albumen Philydracece. 

 Carpels combined. 



Flowers on a spadix .... Palmacece. 

 Flowers not on a spadix. 

 Perianth rolled inwards after flower- 

 ing. Aquatics PontederiacecE. 



Perianth not rolled inwards after flower- 

 ing, conspicuous \ . . . . Liliacece. 



