170 84. ARACE.E. 



branched on the upper part, 23 ft. high. Le. long, linear, 

 triquetrous at the base, upper ones with broad sheathing bases. 

 Fl. in spherical heads, lower ones fertile, upper barren, forming a 

 kind of panicle at the apex of the stem, surrounded by leaves. 

 Plant grass green, readily mistaken for an Iris. 



Common. In stagnant ditches and streams. (B) P. 7. Forth and Clyde Canal; 

 in a ditch, west of Cadder wilderness; beyond Rutherglen, &c. 



2. S. SIMPLEX, Huds. Unbranclied Upright Bur-reed. Le. 

 weak, and often floating, triangular at the base, narrow. Fl. stem 

 simple, slender. Heads of fl. distant, lower one fertile, shortly 

 stalked, next 2 fertile and sessile; upper 3 barren. 



Frequent. In ditches and stagnant water. (B) P. 7. Forth and Clyde Canal ; 

 Fossil marsh; Frankfield and Hogganfield lochs; Paisley Canal; St. Germans 

 loch, &c. 



3. S. MINIMUM, Bauh. Small Bur-reed. Le. long, narrow, 

 linear, plain and pellucid, floating 011 the surface of the water. 

 Fl. stem slender, simple. Heads of fl. few, only 1 sterile. Fruit 

 sessile, with a short beak. 



Frequent. Lakes and stagnant water. (B) P. 7. Forth and Clyde Canal ; 

 Frankfield loch; and from Gourock to Arran. 



84. ABACE2!. 



1. A 'RUM. Cuckoo-pint. 



A. MACULATUM, L. Cuckoo-pint, Wake- Robin, Lords and 

 Ladies. Le. all radical, sagittate -hastate, lobes at the base blunt 

 or acute, often with purple spots, footstalks very long. Spatha 

 convolute, 6 8 in. long, tapering to a point, contracted above the 

 base. Spadix with ovaries at the base, next the sessile st. above 

 these probably sterile ovaries, terminating in a purple club. 

 Berries scarlet ; whole plant very acrid. 



Not common. In woods and under hedges. (E) P. 45. "Bothwell woods; 

 Avon at Barncluith," Hopk. Craignethan Castle; Crookston Castle; Cadder 

 wilderness ; Bute and Cumbrae. 



2. A'CORUS. Sweet-Flag. 



A. CALAMUS, L. Common Sweet-Flag, Sweet-Sedge. Rhizome 

 large, thick, aromatic. Le. linear, erect, sword-shaped, 2 3 ft. 

 long. Scape two-edged, prolonged beyond into a spatha, with 

 the spadix appearing as if lateral, sessile, and covered with fl. 

 Stem and le. sweet-scented when bruised. 



Very rare. In an old arm of the Kelvin at Cadder House; "Castle Semple 

 loch," H. & A. Corehouse. (E) P. 6. 



