358 86. ALisMACKs;. 



repens (Dav.) ; stoloniferoua, producing 1. roots and fl. at the 

 nodes, fl. larger. JE. B. S. 2722.— Turfy togs.— jS. By lakes in 

 Wales and Ireland. P. VI. VII. E. S. I. 



3. A. ndtans (L.) ; st. floating and rooting leafy, peduncles 

 simple from the joinings of the stem, carp, striate beaked, float- 

 ing 1. stalked oblong blunt, radical leafless petioles broadly subu- 

 late. — E. B. 775. B. vii. t. 54. — St. slender, often very long. 

 Root-petioles in small tufts. Fl. rather large, white with a 

 yellow spot. — Lakes, rare. P. VIII. E. I. 



2. Actinocae'ptjs R. Br. Thrumwort. 



1. A. Damasdnium (R. Br.) ; stalks with 1 — 3 whorls of fl., 

 carp, subulate compressed opening longitudinally, 1. cordate- 

 oblong. — E. B. 1615. Alisma L. — L. all radical, floating, on 

 long stalks, 5-veined. Pet. white. Carp, large ; with 2 stalked 

 seeds, one from the lower angle erect, one from the upper hori- 

 zontal. — Ponds and ditches, rare. P. VI. VII. E. 



3. Sagiita'eia Linn. Arrowhead. 



1. 8. sagiUif6lia (L.) ; aerial 1. arrowshaped with lanceolate 

 straight lobes, fl. -stalk simple, fl. whorled. — E. B. 84. R. vii. 

 t. 63. — Stoloniferous ; each runner ending in a tuber. The 1. 

 that rise above the water are remarkably arrowshaped, with the 

 3 parts nearly equal. The submersed leafless petioles are linear. 

 Fl. white.— Ditches and rivers. P. VIII. E. I. 



Suborder II. Butomem. 



4. Bu'tomtis Linn. Flowering Rush. 



1. B. umbelldtus (L.).~E. B. 651. £. vii. t. 58.— Flowerstalk 

 radical, 2 — 3 feet high, overtopping the leaves, bearing an irre- 

 gular many-flowered simple umbel with soarious bracts and a 

 membranous 3-leaved involucre. Fl. rose-coloured. L. radical, 

 slender, triangular. — Rivers and ponds. P. VI. VII. E. S. 



Suborder III. Juncagineae. 

 5. Schetjchze'eia Linn. 



1. S.palus'tris(h.).—E.B.\%Q)1. St. 78. 4. ij. i. 419.— St. 



6—8 in. high, erect. ^ L. distichous, few, alternate, semicylin- 

 drical, blunt, with a minute pore on the upper side of the ape.x. 

 Raceme terminal, of about 5 greenish flowers. Caps, about 3, 

 much inflated.— Sphaguous bogs, rare. P. VII. E. S. 



