SYSTEMATIC ABBANGEMENT OF ANGI08PEBMS. 825 



Family Centrolepidese : Small rush-like herbs with flowers in spikes 

 or heads ; perianth none ; pistil 1- to 3-celled ; ovules orthotropous, 

 pendulous. (Sp. 33.) 



Family Kestiaoeae : Rush-like herbs or undershrubs with spiked, 

 raoemed, or panicled flowers ; perianth segmeats 6 or less, chafiy ; 

 pistil 1- to 3-celled ; ovules orthotropous, pendulous. (Sp. 240.) 



Family Cyperacese (The Sedges) : Grass-like herbs with 3-ranked 

 leaves ; perianth segments bristly or none ; pistil 1-celled ; ovules 

 anatropous, erect. (Sp. 2200.) 



Family Gramineae (The Grasses) : Mostly erect herbs with hollow 

 jointed stems and 3-ranked leaves ; perianth segments of 3 to 6 thin 

 scales or none ; pistil 1-celled ; ovules anatropous, ascending. (Sp 

 3500.) 



Okder 44. HYDEAIES. Waterwoets. 



Compound tricarpellary pistil, inferior to all other parts of the 

 flower ; flower-leaves in each whorl alike in shape (flower regular) ; 

 seeds without endosperm. 



Family Hydrocharidese (Waterworts) : Small aquatic herbs mostly 

 inhabiting the fresh waters of temperate climates. (Sp. 40.) 



Order 45. EPIGYN.ffi. Irids. 



Compound tricarpellary pistil, inferior ; flower-leaves in each 

 whorl mostly alike in shape (flower regular) ; seeds with endosperm. 



Family Dioscoreacese (Yams) : Mostly twining herbs with broad, 

 petioled, longitudinally veined leaves ; pistil 3 celled ; ovules 2 in 

 each cell ; stamens 6. (Sp. 170.) 



Family Taocaoeee : Stemless herbs with broad pinnately parallel 

 veined leaves ; pistil 1-celled ; ovules many ; stamens 6. (Sp. 10.) 



Family Amaryllidacese (The Amaryllids) : Leaves narrow, or the 

 blade broad with longitudinal veins ; pistil 3-celled ; ovules many ; 

 stamens 6 or 3. (Sp. 650.) 



Family Iridacese (The Irises) : Leaves sword-shaped ; pistil 3- 

 celled ; ovules many ; stamens 3. (Sp. 770.) 



Family Hsemodoraceae (Bloodworts) : Leaves sword-shaped ; pistil 

 3-celled ; ovules 1 to many ; stamens 6. (Sp. 125.) 



Family Bromeliacese (Pineapples) : Leaves mostly rosulate ; exter- 

 nal perianth whorl calycine ; pistil 3-celled ; ovules many ; stamens 

 6. (Sp. 535.) 



Family Soitaminese (Bananas) : Leaves mostly ample, pinnately 

 parallel veined ; external perianth whorl calycine ; pistil 3-celled or 

 becoming 1-celled ; stamens mostly 1 (rarely 5). (Sp. 520.) 



