28 Dioscoreaceae, Mdaceae 



Tribe i. Amaryllideae. No corona, 



Subtribe Galaitthinae, Perianth actinomorphic, with- 

 out tube. Loculi of ovary with oo ovules. 



Perianth-segments all equal. Leucojum. 



Outer perianth-segments larger than inner. 



©Galanthus. 



Tribe 2. Narcisseae. Corona present as tube, ring 

 or scales. 



Subtribe Narcissinae. Stamens included in the cup- 

 like corona. Narcissus. 



Fam. 4. DiOSCOREACEAE. Lianes. Rhizome often 

 tuberous. Leaves often sagittate, veins reticulate. 

 Flowers in racemes, mostly diclinous, homochlamydeous. 

 Periajtth sepaloid, usually with short tube. G (3), 3 or 

 i-loc with axile or parietal piace?itae^ each placenta 

 mostly with two superposed, anatropous ovules. Styles 

 3, sometimes bifid. Frint a capsule or berry. 



Tribe Dioscoreae. Flowers diclinous. Ovules 2 in 

 each loculus. 



Only British genus (berry imperfectly 3 -celled) : 



Tamus. 



Suborder 3. IRIDINEAE. As Liliineae, but inner 

 whorl of stamens aborted. 



Fam. 5. Iridaceae. Mostly herbs with equitant 

 leaves and terminal inflorescences. Flowers hermaphro- 

 dite, homo- or heterochlamydeous 3-merous, actinomorphic 

 or zygomorphic. Stamens always 3 (the outer whorl). 

 Anthers extrorse. G(3) with many anatropous ovules 



