TETRANDRIA TETRAGYNIA. 39 



49. CORNUS. 



1. C. suecica, stem herbaceous, 4 to 6 inches high ; leaves op- 

 posite, ovate, smooth, ribbed ; flowers few, umbellate, surround- 

 ed by a 4-leaved involucre, and springing from the axil of the 

 forked extremity of the stem. Dwarf Cornel. 



Hob, " In Northumbriae montibus Chevioticis dictis, in 

 latere occidentali septentrionalis partis mentis altissimi 

 copiosissime," RAY. It remained unobserved in this 

 station, until I rediscovered it in the summer of 1828. 

 It grows close to the spring, where those ascending ge- 

 nerally rest themselves ; and though limited to a small 

 space, is still abundant. July, Aug. 7/ 



50. PARIETARIA. 



1. P. officinaliS) stem ascending, reddish ; leaves lanceolate, 

 ovate, without lateral ribs at the base ; involucrum 3-flowered, 

 with 7 ovate segments. Pellitory>of-the-Wall. 



Hob. Old walls. Ramparts. Old Castle, Thomp. Dike 

 below the Chain Bridge. June. If. 



51. ALCHEMILLA. 



1. A. vulgar^ leaves lobed, plaited, uniform, serrated, flowers 

 yellowish-green, in terminal corymbose clusters. Common Lady's- 

 mantle. 



Hob. Pastures and road-sides common. Near the top of 

 Cheviot with little variation in character. June, Julv. 



v 



2. A. arvensis, leaves flat, 3-lobed, cut, pubescent ; flowers 

 green, sessile, axillary. Field Lady's-mantle. 



Hab. Sandy or gravelly fields, and on dikes capped with 

 earth, common. May, &c. 1J. 



II. TETRAGYNIA. 

 52. ILEX. 



1. /. Aquifolium, leaves ovate, acute, spinous and wavy ; flowers 

 axillary, somewhat cymose. Common HoUy. 



