ARACEAE 247 
with purple, brown or dark-green within: fruits 8-12 mm. thick.—Swamps, 
moist hillsides, and thiekets, various provinees, Fla. to La., Kans., Minn, 
nd N. S. 
3. A. acuminatum Small. Plants more slender than A. triphyllum: leaf-seg- 
ments 7-12 cem. long: spathe-blade long-aeuminate, deeper-green than the 
eonvolute portion: fruits 8-9 mm. thiek.—(PARSON-IN-THE-PULPIT.) —W oods, 
often swampy, N Fla.—Forms with the spathe-blade moderately long-acuminate 
occur in the Coastal Plain as far up as SE Va., and may represent this species. 
4. A. quinatum (Nutt.) Schott. Plants about as large as A. Oh ae esi leaf- 
segments 5, the lateral pairs sometimes partly or os ag nited, glaucous be- 
neath: spathe green: spadix slender: fruits 6-7 mm. [psc 
JOHN.)—Woods and moist rich soil, various DM. Ga. to Tenn 
and N. C. 
CAUDA Small. Herbs 
with glastered corms: leaf-blades ae 
ately 5-17 divided. | Sea per 
nently erect. Spadix whip- like, the a 
tile a covered with flowers. Sta- 
4. Spathe wholly convolute or 
lightly dilated at the tip. Fru 
—One spec 
M. Dracontium (L.) Small Leaf- 
e te to 
segments cunea oblaneeolate, 1-3 
dm. 1 spathe green, 3-10 e 
8m ick, © [4 ~ Dracon- 
RE DRAGON- 
—Rich woods and T various provi 
Ont. "and Me.—Spr. 
7. PISTIA L. Floating herbs. 
Leaves elustered on very short branehes 
at the nodes of the rootstock: blades en- 
tire, dilated upward. Spadix adnate to 
the axillary spathe. Flowers monoecious, 
the pistillate solitary, the staminate above 
the pistillate. Perianth wanting.—One 
species. 
. Stratiotes L. ee in 2 
nea 
at ER-L ; 
WATER-BONNETS.)—Streams, lakes, and 
ponds, Coastal Plain, c to Tex.—(W. I. Mex., C. A, S. 4A, 0. W.)— 
Frequently forming a complete, often extensive gray- green carpet. The hairy | 
ribbed myriad leaf- urge produce a n iridescent effect. Contrary to the usual 
ite n the size in species of d the plants of water lettuce are 
extremely variable. The Meses us very spongy. 
