346 91. TYPHACE^. 



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

 rise above the water are remarkably arrowshaped. The sub- 

 mersed leafless petioles are hnear. Fl. white. — Ditches and 

 rivers. P. VIII. E. I. 



Suborder II. Butomea. 

 4. BuTOMUS Linn. Flowering-rush. 



1. B. umhellatus (L.).— B. B. 651. B.. vii. t. 58.— Flower- 

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

 irregular many-flowered simple umbel with scarious bracts and 

 a membranous 3-leaved involucre. Fl. rose-coloured. L. all 

 radical, linear, triangular. — Rivers and ponds. P. VI. VII. 



Suborder III. Juncaginea. 



5. ScHEUCHZERiA Liun. 



1. S. palustris (L.).—E. B. 1810. St. "8. 4. R. x. 419.— St. 

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

 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 hogs. Lakely Car, and 

 Thorne Moor, Yorkshire. Bomere, Shropshire. Wybunbury, 

 Cheshire. Methvin, Perthshire. P. VII. E. S. 



6. Triglochin Linn. Arrow-grass. 



1. T. maritimum (L.); fr. ovate of 6 combined capsules. — 

 E. B. 255. R. vii. t. 52. — L. 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. R. vii. t. 51. — Taller than the preceding but closely 

 resembling it. Stoloniferous. — Marshy places. P. VI. VII. 



Order XCI. TYPHACE^. 



Fl. monoecious, many, closely placed on a spadix without a 

 spath ; barren and fertile on diiferent parts of the spadix. Pe- 

 rianth of 3 or more scales or bristles. Stam. I — 6, distinct or 

 monadelphous. Anth. erect. — Fertile fl. ; Ovary free, solitary, 

 1-celled ; ovule 1, pendulous. Style short. Stigma simple. Fr. 

 dry or spongy. Embryo with a cleft on one side. 



1. Typha. Sterile and fertile spikes cylindrical. Stam. sur- 

 rounded with bristles. Anth. 3 together on one filament. 

 Ovary surrounded with bristles, at length stalked. 



