56 THE BOOK OF THE IRIS 



E. Falls with a broad diffuse 



beard, segments very round, 

 stem with one flower only. 



Section Oncocyclus, 1 p. 99. 

 Ex. /. iberica, L susiana. 



F. Falls with linear beard, stand- 



ards usually with similar 

 beard, all segments narrow 

 and pointed, stem with two 

 or even three flowers, 

 spathe-valves always per- 

 sistently green, rootstock 

 with new buds separated 

 by a neck. Section Regelia, 1 p. Il6. 



Ex. /. Leichtlini, L Korol- 

 koivi, /. vaga. 



G. Falls with a narrow beard 



down the lower part of 

 blade and the claw, stand- 

 ards rarely bearded, root- 

 stock without rounded 

 swellings separated by a 

 neck. Section Pogoniris, p. 120. 



Ex. Lpumila, L variegata, 

 L pallida, L germanica. 



II. ROOTSTOCK BULBOUS. 



A. Standards large erect, 

 stamens not adhering to 

 style-branches. Section Xiphion, p. 153. 

 Ex. /. Xiphium, L reticu- 

 lata. 



1 N.B. Hybrids between Oncocyclus and Regella may have a beard 

 which approaches or equals that of either section. The flowers may 

 be almost the same as Oncocyclus, but there are two usually to each 

 stem. 



