256 
10. EUPHORBIACEiE. 
PI, ex, mon. 
B. Flowers unisexual, naked ; stamens 4 to 12, 
Monoicous ; stamens 9 to 12; stem herbaceous 
Mercurialis. 26, 
JDioicous; stamens 4 ; stem arborescent ...... Buxus. 27. 
A. Monoicous, herbaceous ; perigonium 0 ; involucrum 
1 -leafed, cup-shaped, 3 or many-flowered ; flowers pedi- 
celled; one of them female, trigynous; the others male, 
monandrous. 
II. 22, GALARHCEU8. Haworth. Wartwort , 
Bractece many; bracteolce 2, cordate; involucrum campanu- 
late, 8-cut; lobes alternate, the outer coloured, not cut, 
rounded ; inner membranaceous, upright.- — Male. Flowers 
many ; perigonium many-parted ; sepales rather feathery ; 
filament jointed in the middle. — Fem. solitary, central; 
perigonium 0 ; ovary pedicelled ; stigmata 3, 2-forked ; 
regma exserted, 3-coccous, 3-seeded. — Root fusiform ; herb 
milky, smooth; stem leafy; flowers terminal, umbelled, in- 
volucrated. 
a. Regma bald, smooth, 
1. Galarhoeus decussatus. Crossing wartwort, 
TJmbells 4-rowed, forked; leaves opposite, sessile, quite 
entire ; base cordate, 4-rowed ; seeds ovate, reticulated. 
Lathyris, seu Cataputia minor, Ger. em. 503, 18. 
Euphorbia Lathyris, Lin. S. P. 
Tithyraallus Lathyris, Lamarck FI. Fr. 3, 99. 
Euphorbia decussata, Salisb. Prod. 389. 
Galarhoeus Lathyris, Haworth Succ. PI. 143. 
Caper spurge. 
Dry stony places ; perennial ; May and June. 
Stem 2 to 4 feet high ; herb purple glaucous. 
2. Galarhoeus helioscopius. Sun wartwort, 
TJmbells 5-rowed, forked ; bracteola reversely ovate ; 
leaves wedgeshape, serrated ; seeds ovate, reticulated. 
Tithymalus helioscopius, Ruii Syn. 313, 8 ; Ger. em. 498,2; Park. 186. 
Euphorbia helioscopia, Lin. S. P. 658. » 
Galarhoeus helioscopius, Haworth Succ. PI. 154. 
Sun spurge. 
Cultivated fields ; annual ; July and August. 
Herb light green ; stem branchy at bottom ; leaves bald ; 
flowers yellow.— Juice of this and the other species corrodes 
warts, and destroys the nerves of aching teeth : also used to 
raise blisters behind the ears. 
