146 65. EUPHORBIACE.E. 



64. EMPETRACE^l. 



1. EM'PETRUM. Crowberry, Crakeberry. 



E. NfGRUM, L. Stem procumbent, branched. Le. linear- 

 oblong, margins rolled back, leaving a small white line 011 the 

 centre of the back of the le. Fl. small purple, axillary, clustered 

 towards the summit of the branches. Fruit small, globular, pur- 

 plish black. 



Frequent. On mountain heaths. (S) Sh. 46. Cathkin hills; Campsie 

 moors; Gourock, and on all the hills around the Firth. 



65. EUPHORBIACE^. 



1. MERCURI!LIS. Dogs Mercury. 



M. PERENNIS, L, Stem erect, about 1 ft. high, simple. Le. 

 stalked, confined to the upper part of the stem, ovate or oblong- 

 lanceolate, 2 4 in. long, serrate, rough. FL in axillary lax 

 spikes, fertile fl. concealed by the le., 1 2 on the ped. Said to 

 yield a blue dye ; poisonous. 



Very common in the woods. Kelvinside wood, &c. (B) P. 3 5. 



2. EUPHORBIA. Spurge. 



1. E. HELIOSCOPIA, L. Sun-Spurge, Wartwort. Stem erect, 

 612 in. high, slightly branched from the base or simple. Stem 

 le. obovate, tapering into a stalk. Bracts broadly obovate or 

 orbicular, all serrated upwards, glabrous. Umbel in 5 principal 

 branches, each once or twice forked. Glands of the involucre 

 rounded. Capsule smooth. Seeds pitted. 



Common. In corn fields and waste places. (B) A. 6 10. 



2. E. PEPLTJS, L. Petty-Spurge. Stem 6 12 in. high, branched 

 from the base. Le. obovate, entire, with short footstalks, glabrous. 

 Bracts ovate. Umbel of about 3 principal branches, each 2 or 3 

 times forked. Glands of the involucre crescent- shaped, with long 

 pointed horns. Capsule glabrous, with narrow wings. Seeds 

 dotted. 



Frequent. In cultivated places and waste gardens, (B) A. 7 11. Ruther- 

 glen; Cambuslang; Cathcart; Gourock; C umbrae and Arran. 



3. E. EXIGUA, L. Dwarf-Spurge. Stem ascending, branched 

 from the base, 4 8 in. high. Le. small, linear -lanceolate, acute, 

 rigid, entire. Umbel of 3 4 principal branches, each 2 3 times 

 forked. Glands of the involucre crescent-shaped, with 2 fine 



