522 OF THE FULCRA, 



sometimes coloured. The Lime-trees, TiVia 

 europaa, f. 117, t. 6*10, and parvijoUa, 

 t. 1705, have a very pecuhar oblong pals- 

 floral leaf, attached to the flower-stalk. 

 The Lavenders, f. 1 1 8, sec Curt. Mas;. 

 f, 400 and 401, have coloured bracteas, and 

 the Purple-topped Clary, Salvia Hormimim^ 

 Fl. Gmc, t. C'O, exhibits a o-radation from 

 the proper leaves to green bracteas, and 

 from them to coloured ones, which last 

 are barren, or unaccompanied by flowers. 

 Hence I am induced to believe this plant 

 a mere variety of S. virklh^ t. 19, all whose 

 bracteas are green and fertile. Bartsia 

 cJphiay EngL Bot. i. 361, and Melam- 

 pyrum arvense, t. .53, display an elegant 

 transition from leaves to coloured bracteas. 

 The Orchis tribe have green leafy bracteas, 

 difterent in size in diiFerent species. A 

 most beautiful large and coloured bractea 

 is produced in Musscenda frondosa, Horf* 

 Mai. V. 2. i. 18, from one of the teeth of 

 the calyx, also in ]\f. glahra of Willdenow, 

 and tAvo new species brought from Ame- 

 rica by Mr. John Fraser. Spinous bracteas 

 of a curious construction guard the' calyx 



