83. TYPHACE^E. 169 



2. SAGITTARIA. Arrow-Head. 



S. SAGITTIFOLIA, L. Common Arrow-Head. Scape 1 2 ft. 

 high. Le. all radical on long stalks, arrow-shaped, 6 8 in. long, 

 basal lobes as long as the terminal one. Fl. white, in distant 

 whorls, branches short, inner segments of the peri, twice as large 

 as the 3 outer. St. numerous. 



Rare. Margins of rivers and ditches. (E) P. 78. Banks of the Cart at Inch- 

 innan bridge; Forth and Clyde Canal. A doubtful native. 



3. TRIGLOCHIN. Arrow-Grass. 



1. T. PALUSTHE, L. Marsh Arrow-Grass. Scape 8 10 in. 

 high. Le. linear, fleshy, with a slight groove, sheathing at the 

 base. Spike slender, lax. Fl. small, yellowish green. Fruit of 

 3 linear carpels, combined by a central axis, when ripe resembling 

 an arrow-head. 



Frequent. Marshy places and wet meadows. (B) P. 68. Possil marsh; 

 Franks eld and Hogganfield lochs ; Gourock to Arran. 



2. T. MARITIMUM, L. Sea-side Arrow-Grass. A stronger plant 

 than the last, differing in its fruit being composed of 6 ovate 

 carpels, combined by a central axis. 



Common. In salt marshes, from Bowling to Arran. (B) P. 5 9. 



83.-TYPHACEJE 



1. TfpHA. Cats-tail, Reed-mace. 



1. T. LATIFOLIA, L. Great Reed-mace. Stem erect, 36 ft. 

 high. Le. linear, nearly flat, very long sheathing at the base. 

 Fl. in a continuous spike, fertile ones on the lower portion. 

 Ovaries densely packed, cylindrical, turning nearly black when 

 ripe, barren fl. at the apex of the spike. Anthers closely packed, 

 with 1 or 2 membranous bracts. 



Very rare. Borders of ponds and lakes. (B) P. 78. " In a bog on the banks 

 of the Clyde, about 2 miles east of Hamilton," Hopk. In an old arm of the 

 Kelvin at Gadder House; Lochlibo; "Lochs near Corehouse," Mr. Dunlop. 

 Inchinnan bridge; "Whiting bay, Arran," Lands. 



2. T. ANGUSTIFOLIA, L. Lesser Reed-mace. Smaller than the 

 last. Le. linear, narrow, channelled below, dark green. Sterile 

 and fertile spikes slightly separate, cylindrical, the latter reddish 

 brown. 



Very rare. Pools and ditches; near Auchmeddan," Mr. Dunlop. (E) P. 7 8. 



2. SPAEGANIUM. Bur-reed. 



1. S. RAMOSUM, Huds. Branched Bur-reed. Stem erect, 



