256 10. EUPHORBIACE-^. PL ex. mon. 



B. Flowers unisexual, naked ; slaTnens 4 to 12. 



Monoicous ; stamens 9 to 12; stem herbaceous 



Mekcurialis. 26. 

 Dioicousj stamens 4'; i'/e??z arborescent Buxus. 27. 



A. Monoicous, herbaceous ; perigonium ; involucrum 

 1-leafed, cup-shaped, 3 or many-flowered ; flowers pedi- 

 celled; one of them female, trigynous; the others male, 

 monandrous. 



II. 22. GALARHCEUS. 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 ; 

 Jilament 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 laid, smooth. 



1. Galarhoeus decussatus. Crossing wartwort. 

 Umbells 4!-vowed, forked; leaves opposite, sessile, quite 



entire ; base cordate, 4-rowed ; seeds ovate, reticulated. 



Lathyris, sen Cafapulia minor, Ger. em. 503, 18. 

 Euphorbia Lathyris, Lin. S. P. 

 Tithyraalius Lathyris, Lamarck FL Fr. 3, 99. 

 Euphorbia decnssata, Salisb. Prod. 389. 

 Galarhoeus Lathyris, Haworth Succ. PL 143. 

 Caper spurge. 



Dry stony places ; perennial ; May and June. 

 Stem 2 to 4 feet high ; herb purple glaucous. 



2. Galarhoeus helioscopius. Sun wartwort. 

 Umbells 5-rowed, forked ; bracteola reversely ovate ; 



leaves wedgeshape, serrated ; seeds ovate, reticulated. 



Tilhymalus iielioscopius. Rail Syn. 313,8; Ger. em. 498,2; Park. 186. 

 Euphorbia helioscopia, Lin. S. P. 658. 

 Galarhoeus helioscopius, Haworth Succ. PL 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. 



