336 90. ALISMACEE. 
sessile.—E. B. 775. R. vii. t. 54.—St. slender, floating, the few 
lowest joimings rooting. Root-l. in small tufts. Fl. rather 
large, white with a yellow spot.—Lakes, rare. P. VIII. 
2. Actinocarpus R. Br. 
1. A. Damasonium (R. Br.); stalks with 1—3 whorls of f1,, 
carp. subulate compressed opening longitudinally, 1. cordate- 
oblong.—#. B.1615. Alisma Sm. Damasonium stellatum Kunth. 
—L. all radical, floating, on long stalks. Pet. white. Carp. large, 
with 2 stalked seeds, | from the lower angle erect, the other from 
the upper horizontal.— Ponds and ditches, rare. P. VI. VII.—E. 
3. Sacitraria Linn. Arrowhead. 
1. S. sagittifolia (L.); 1. arrowshaped with lanceolate straight 
lobes, fi.-stalk simple, fl. whorled—E. B. 84. R. vii. t. 53.— 
Stoloniferous ; each runner ending in a tuber. L. remarkably 
arrowshaped, rising above the water. The submersed 1. are 
really leafless petioles. Fl. white.—Ditches and rivers. P. a 
E. I. 
Suborder II. Butomee. 
4. Buromus Linn. Flowering-rush. 
1. B. umbellatus (L.).—H#. B. 651. R. vii. t. 58.—Flower- 
stalk radical, 2—3 feet high, longer than the leaves, bearing an 
irregular many-flowered simple umbel with scarious bracts and a 
membranous 3-leaved involucre. Fl. rose-coloured. L. all radi- 
cal, linear, triangular.—Rivers and ponds. P. VI. VII. 
Suborder III. Juncaginee. 
5. ScHEUCHZERIA Linn. 
1. S. palustris (L.).—E.B. 1810. St.78.4. R.x.419.—St. 
6—8 in. high, erect. L. distichous, few, alternate, semicylindri- 
cal, obtuse, with a minute pore on the upper side at the apex. 
Raceme terminal of about 5 greenish flowers. Caps. about 3, 
much inflated —Sphagnous parts of bogs. Lakely Car, Borough- 
bridge; Thorne Moor, Doncaster, Yorkshire. Bomere, Shrop- 
shire. Methvin, Perthshire. P. VII. E. 5. 
6. TrigLocain Linn. 
1. T. maritimum (L.); fr. ovate of 6 combined capsules.— 
E. B. 255. R. vii. t. 52. St. 78. 5.—L, all radical, linear. FI. in 
