344 90. ALISMACEJE. 



subumbellate of few 3 5-flowered clusters on long drooping pe- 

 duncles, segments of perianth broadly-lanceolate bristle-pointed, 

 filaments as long as the anthers, caps, roundish-ovate, seeds ob- 

 long obtuse or apiculate scarcely appendaged below. E. B. S. 

 2688. St. slender, 2 5 in. long. L. short, curved, narrowly 

 linear. Panicle of 3 5small clusters,one nearly sessile, the others 

 on long deflexed stalks. Highest summits of the Cairngorum 

 and Sutherland mountains. P. VII. VIII. S. 



Order XC. ALISMACEJE. 



Perianth free, 6-parted, coloured. Stam. 6 9 or more. 

 Ovaries 3 6 or many. Styles and stigmas the same. Fruit 

 not bursting, 1- or many-seeded. Embryo straight or curved ; 

 albumen 0. See figures of the genera in G. F. G. Monocot. ii. 



Suborder I. ALISMOIDE^. 



Three inner segments of the perianth like petals. Seeds 1 2 in 

 each cell, erect or ascending. Placenta sutural. Embryo cylin- 

 drical, doubled upon itself; radicle next the hilum. 



1. ALISMA. Fl. perfect. Stam. 6. Carp, many, 1-seeded, 

 not bursting. 



2. ACTINOCARPUS. Fl. perfect. Stam. 6. Carp. 68, 

 2-seededj combined at the base and spreading in a radiant 

 manner. 



3. SAGITTARIA. Fl. monoecious. Male fl. with many stamens. 

 Female fl. with many 1-seeded compressed carpels upon a 

 globose receptacle. 



Suborder II. BUTOME.E. 



Three inner segments of the perianth like petals. Seeds many, 

 minute. Placenta ramified over the inner surface of each fol- 

 licle. Embryo straight or curved ; radicle next the hilum. 



4. BUTOMUS. Perianth 6-parted, coloured, resembling a co- 

 rolla. Stam. 9, 3 interior. Follicles 6, connected below, 

 bursting inwards. 



Suborder III. JUNCAGINE.E. 



Perianth uniform, herbaceous, inconspicuous, or 0. Seeds 

 1 2, erect, approximate at the base. Embryo straight ; radicle 

 at the opposite end from the hilum j plumule coming through 

 a lateral cleft in the embryo. 



5. SCHEUCHZERIA. Perianth of 6 reflexed leaves. Stam. 6, 



