CLASSES, DIVISIONS, AND ORDERS. 



88. Liliacea. Perianth petal-like. Stani. 6 ; anth. 

 bursting inwards. Fr. a dry capsule. Bulbous or with 

 root of fleshy fibres in Simeihis 416 



89. Melanthacece. Perianth subherbaceous or petal-like. 

 Stam. 6 ; anth. versatile from below their middle. Fr. of 

 3 follicles slightly connected or a 3-celled capsule. 

 Tuberous, or with a creeping rhizome 423 



90. JuncacecB. Perianth of glumelike scarious seg- 

 ments. Stam. usually 6 ; anth. innate. Fr. capsular, 

 3-valved, loculicidal. Rushes 424 



91. Eriocaulacece. Perianth membranous, of 4 5 parts. 

 Stam. 4 6; anth. attached by back. Fr. capsular, mem- 

 branous, 2 3-celled, loculicidal. Aquatic plants. L. 

 tufted. Fl. in heads on naked stalks 431 



**** Perianth wanting in our plants, or of 4 small 

 scalelike fiarts. 



92. Typhacea. Monoecious. Fl. closely packed in cy- 

 lindrical spikes, or in dense globose clusters, the males 

 uppermost. Fr. dry or spongy. Water-plants 432 



93. Aracece. Monoecious with the male fl. uppermost, 

 or perfect, on a spadix and usually in a spath. Fr. suc- 

 culent. Spath usually conspicuous. L. often net-veined. 433 



94. Lemnacece. Monoecious. Fl. 2 in a spath (very 

 rare). Small, floating, green, leaflike, proliferous 435 



95. Potamogetonacea. Fl. perfect or monoecious, in 

 small spikes or clusters. No spath. Ovaries 4 ; stig. 1, 

 sessile, subcapitate. Aquatic plants 43G 



96. Naiadacecs. Mon- or di-cecious. Fl. solitary in a 

 spath. Ovary 1. Style 1 ; stig. filiform. Aquatic 

 plants with linear leaves 444 



Divisions. GLUMIFERJE. 



97. Cyperacece. Anth. entire at the end, innate. Leaf- 

 sheaths entire. Sedges 446 



98. Graminea. Anth. notched at both ends, versatile. 

 Leaf-sheaths split. Grasses 475 



