334 90. ALISMACEA. 
rowly-lanceolate strongly acuminate longer than the obtuse-api- 
culate caps., filaments about as long as the anthers, seeds nearly 
twice as long as broad with a basal appendage.—E. B. S. 2718. 
St.77.7. L. congesta Sm.—St. 8—20 in. high. Filaments more 
than half as long as the rather short small anth. and often equal- 
ling them. Panicle with the clusters nearly all stalked, or (8. L. 
congesta, Le}., L. campestris 8. Hook.) contracted into a rounded 
lobed head.—Moorish and turfy places. P. VI. 
7. L. spicata (DC.); 1. nayrow slightly channeled hairy, 
panicle an oblong lobed nodding spike, clusters shorter than their 
bracts, segments of perianth narrow acuminate bristle-pointed, 
filaments half as long as the anthers, caps. obtuse apiculate, seeds 
oblong with a very slight basal appendage.—E. B. 1176.—St. 
3—12 in. high. L. short, slender. Spike 3—1 in. long, nodding. 
Partial bracts tapering, bristle-poited— Mountains. P. VII. 
8. L. arcuata (Hook.); 1. channeled slightly hairy, panicle sub- 
umbellate of few 3—5-flowered clusters on long drooping pedun- 
cles, segments of perianth broadly-lanceolate bristle-pointed, fila- 
ments equalling the anthers, caps. roundish-ovate, seeds oblong 
obtuse or apiculate scarcely appendaged below.—E. B. S. 2688. 
—St. slender, 2—5 in. long. L. short, curved, narrowly linear. 
Panicle of 3—5 small clusters, ] nearly sessile, the others on 
long deflexed stalks.—Highest summits of the Caimmgorum and 
Sutherland mountains. P. VII. VIII. 
Order XC. ALISMACEA. 
Perianth free, 6-parted, coloured. Stam. 6—9 or more. 
Ovaries 3—6 or numerous. Styles and stigmas the same. Fruit 
not bursting, ]- or many-seeded. Embryo straight or curved, 
albumen 0.—See figures of genera in G. F. G. Monocot. ii. 
Suborder I. ALISMOIDE. 
Three inner segments of the perianth petaloid. Seeds 1—2 in 
each cell, erect or ascending. Placenta sutural. Embryo cylin- 
drical, doubled upon itself, radicle next the hilum. 
1. Auisma. Fl. perfect. Stam. 6. Carp. numerous, ]-seeded, 
not bursting. 
2. Actinocarpus. Fl. perfect. Stam. 6. Carp. 6—8, 
2-seeded, combined at the base and spreading in a radiant 
manner. 
3. Sacirraria. Fil. moncecious. Male fl. with numerous 
stam. Female fl. with numerous l-seeded compressed car- 
pels upon a globose receptacle. 
