ALISMACEJE — AROIDEiE. 
319 
cylindrical, 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, Bo- 
roughbridgc. Thorn Moor, Doncaster. Bomerc, Salop. Methvin, 
Perth. P. VII. E. S. 
6. Triglochin Linn. 
1. T. maritimum (L.) ; fr. ovate angular of G combined cap- 
sules. — E. B. 255. St. 78. 5.— L. all radical, linear. Fl. in a 
lax simple spike or raceme, greenish. — Salt marshes. P. VII. 
VIII. 
2. T. palustre (L.) ; fr. linear angular of 3 combined capsules. 
— E. B. 366. — Taller than the preceding but closely resembling 
it. Stoloniferous. — Marshy places. P. VI. VII. 
Order LXXXVIII. AROIDEIE. 
Fl. mostly unisexual, arranged upon a spadix. Perianth 3 — 4- 
or 6-parted or 0. Stam. numerous or definite and opposite to 
the segments of the perianth. Anth. bursting outwards. Ovaries 
free, solitary ornumerous,l — 3-celled, 1-ormany-seeded. Stigmas 
1 or 2. Fr. not bursting, succulent or dry. Embryo in the axis 
of fleshy albumen. — The characters of this and the preceding 
order appear to require revision and probably a new arrangement 
of the genera. 
Suborder I. TYPHINE^E. 
Fl. numerous, with a perianth. Stam. 3. Anth. wedgeshaped, 
erect. Filaments long, slender. 
1. Typha. Sterile and fertile spikes cylindrical. Stam. sur- 
rounded with sets. Anth. 3 together on one filament. 
Ovary surrounded with sets, at length stalked. 
2. Sparganium. Fl. in dense globose heads, each with a 
single 3-leaved perianth. Drupe dry, sessile. 
Suborder II. AR.INE.iE. 
Fl. numerous. Anth. 1 — 2- or many-celled, ovate. Filaments 
very short. « 
3. Acorus. Spath 0. Perianth 6-leaved, inferior, persistent. 
Stam. 6, filiform. Caps, not bursting. 
4. Arum. Spath of 1 leaf, convolute at the base. Perianth 0. 
Male fl. of 1 sessile 2-celled anther. Female fl. lowermost 
on the spadix, of a solitary pistil. Fr. a berry. 
