144 



52. IRTDACE.E. 



and equitant on 



B. Leaves swoi'dshaped 

 the stem. 

 C. Perianth-tube long, curved. 



Segments equal ; style-branches bifid Watsonia 1 

 Segments unequal; style-branches 



simple 



Tube cylindrical ; spathe small, 



membranous Antholyza 2 



Tube fuiniel-shaped ; spathe large, 



herbaceous Gladiolus 



C. Perianth-tube short, straight, segments 

 spreading; style-branches simple. 

 Spathe-valves delicate, deeply torn 



at top Sparaxis 3 



Spathe-valves rather stiff, outer one 

 entire or denticulate. 

 Stamens unilateral ; spathe short, 

 partly membranous ; style- 

 branches widened at summit. 

 Hairy plant ; perianth-tube rather 



long 



Glabrous plant ; perianth-tube 



very short 



Stamens equilateral. 

 Spathe herbaceous ; style-branches 



avplshaped 



Spathe membranous ; style- 



branches widened at summit 

 B. Leaves linear, usually few and radical. 

 Perianth-tube long, 



branches simple 

 Perianth-tube short. 

 branches bifid 

 A. Flowers 2 or more i 



stamens short, opposite to the style- 

 branches and appressed to them. 

 Style-branches petaloid, ending in 2 erect 

 crests exceeding the stamens. 

 Inner segments erect ; leaves usually 



swordshaped IRIS 5 



Inner segments spreading or very 



small; leaves few, linear Mor.ea 6 



Style-branches small, not crested or ex- 

 ceeding the stamens; filaments 

 united in a tube. 

 Style-branches flattened and slit on_ the 

 inner side; leaves 1-2. radical, 



much longer than the stems Homerlv 7 



Style-branches bilid and fringed; leaves 



few, radical, and also on the stem Ferrakl\ 



1. W.\TSONIA, Mill. 



^ After Sir Wui. Watson, ^[.D.. an English Professor of 



Botany.) 



Perianth funnel-shaped, with a long, curved tube and 

 subequal lobe.s : anthers linear, versatile; style long, slen- 



curved ; style- 

 straight ; style- 

 1 each spathe ; 



Baul\na 

 Triton L\ 



Hesperantha 



IXIA 



AciDANTHEUA 

 ROAIULEA 4 



