318 
ALIS.UACE^E. 
2. A. nutans (L.) ; st. floating and rooting leafy, peduncles simple 
from the joints of the stem, carp. " obliquely acuminated striated 
in a globose head," floating 1. stalked oblong obtuse, radical 1. 
(leafless petioles) linear-tapering sessile. — E. B. 775. R- Icon. 
f. 77- 78. — St. slender, floating, the few lowest joints rooting at 
the bottom of the water. Fl. rather large, white with a yellow 
spot. — Lakes, rare. P. VIII. 
3. A. ranunculoides (L.) ; fl. -stalks umbellate, carp, acute with 
5 angles collected into a globose squarrose head, 1. linear-lanceo- 
late acute. — E. B. 326. R. Icon. f. 79. — L. all radical, on long 
stalks. Flower-stalks from a few in. to 2 feet high, terminating 
in a simple umbel or 2 umbellate whorls of simple peduncles. 
Fl. pale purple. — (3. repens (Sm.) ; plant depressed with creep- 
ing scions, fl. larger. A. repens (Dav.) E. B. S. 2722. — Turfy 
bogs. /3. Margins of lakes in Wales and Scotland. P. VI. VII. 
Lesser Water -plantain. 
2. Actinocarpus R. Br. 
1. A. Damasonium (R. Br.) ; stalks with 1 — 3 whorls of fl., 
carp, subulate compressed opening longitudinally, 1. cordate- 
oblong. — E.B. 1615. AlismaSm. Damasonium st ellat um Kunih. 
— L. all radical, floating, on long stalks. Pet. white. Carp, large, 
with 2 stalked seeds, 1 from the lower angle erect, the other from 
the upper horizontal. — Ponds and ditches, rare. P. VI. VII. — E. 
3. Sagittaria Linn. 
1. S. sagittifolia (L.) ; 1. arrowshaped with lanceolate straight 
lobes, fl. -stalk simple, fl. whorled. — E. B. 84. — L. remarkably 
arrowshaped, rising above the water. Submersed petioles with- 
out a limb. Fl. white. — Ditches and rivers. P. VIII. Arrow- 
head. E. I. 
Suborder II. Butomece. 
4. Butomus Linn. 
1. B. umbellatus (L.). The only species. — E. B. 651. — A 
beautiful plant. Flower-stalk radical, 2 — 3 feet high, longer than 
the leaves, bearing an irregular many-flowered simple umbel with 
scarious bracts and a membranous involucre. Fl. rose-coloured. 
L. all radical, linear. — Rivers and ponds. P. VI. VII. Flower- 
ing-rush. 
Suborder III. Juncaginece. 
5. Scheuchzeria Linn. 
1. S.palustris (L.). The only species.— E. B. 1801. St. 78. 4. 
— St. 6 — 8 in. high, erect. L. distichous, few, alternate, semi- 
