346 91. TYPHACE^. 



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

 rise above the water are remarkably arrow-shaped. The sub- 

 mersed leafless petioles are linear. Fl. white. Ditches and 

 rivers. P. VIII. E. I. 



Suborder II. Butomete. 

 4. BUTOMUS Linn. Flowering-rush. 



1. B. umbellatus (L.). E. B. 651. R. 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 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, 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 different parts of the spadix. Pe- 

 rianth of 3 or more scales or bristles. Stam. 1 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. 



