



• 









DODECANDRIA. TRIGYNIA. Euphorbia. 



cuter side at the base, which is covered by a thin concave lid, 

 formed by an expansion of the claw of the upper petal. Stamens 

 20 to 30, or more. Germen pyramidal, 3-sided, corners blunt. 

 Styles none. Summits 3. Capsule with 3 valves, rolled inwards 



so as to enfold the seeds. 



437 



Flowers yellow. 

 Wild Woadm Dyers-weed, Dyers Yellow-weed. 



Woulds. Weld. St.] 



[ Wolds. 



Meadows, pastures, walls, and barren un- 

 cultivated spots. [Coal-pit banks in Staffordshire and Shrop- 

 shire, and about the ruins of Dudley Castle. Mr. Swayne ob- 

 serves that it is one of the first plants that grow on the rubbish 

 thrown out of coal-pits. It is very common in Gloucestershire 

 by the sides of roads, and also about Manchester, probably, as 

 Mr. Caley thinks, from scattered seeds from the dye-houses.] 



A. June, July.* 



R. All the leaves 3 -cleft : the lower winded. 



lu'tea. 



7« 



iii. 467. 



7 



Calyx segments 6 3 strap-shaped, the uppermost the smallest. 

 Petals 69 Stamens to 20. Relhan. Flowers pale yellow* 



Rocket Yellow-weed. Base Rocket. Corn fields, meadows, 

 pastures, chiefly in a calcareous soil; sometimes on walls. [Bun- 

 gay, Suffolk, frequent. Mr. Woodward. On a wall at Clifton 

 near Bristol. Mr. Swayne. Between Sunderland and South 

 Shields. Mr. Robson.J A. June — Aug. 



Var. 2. Curled-leaved. 



Bocc. pi. war. 41. 3. at p. 76-Pluk. 55. 4. 



Barren closes about Roe-hill and Northfleet. 



Ray considers this as a perennial, and therefore a distinct 

 species. It merits further attention. I can only add, that the 

 R. luteola is not an uncommon plant in Portugal ; that in all the 

 specimens I saw there the leaves were curled, but that with the 

 most attentive examination I could discover no other difference. 



EUPHORBIA. Calyjc 1 leaf, distended : bloss. 4 or 



5 petals, sitting on the calyx : caps. 3, united. 



(l) Flowers solitary. 



E. Forked : leaves very entire, half-heart-shaped : flowers Pe'plis. 



solitary, axillary: stems trailing. 



This plant affords a most beautiful yellow dye for cotton, woollen» 

 mohair, silk, and linen, and is that which is most commonly used by the 

 dyers for that purpose, as it gives the brightest dye. Blue cloths dipped 

 in a decoction of it become green. The yellow colour of the paint, 

 called Dutch Pink, is got from this plant. The tinging quality resides 

 in the stems and roots, and it is cultivated in sandy soils, rich soil making 

 the stalk hollow and not so good. Cattle will not eat it, but sheep some- 

 times browse it a little. 



