DIDYNAMIA GYMNOSPERMIA. 131 



171. GLECHOMA. 



1. G. hederacea, creeping, downy ; leaves kidney-heart-shaped, 

 crenate ; flowers blue, axillary. Ground Ivy. 



Hab. Road-sides and hedge-banks. Dikes and hedges be- 

 yond the Magdalen Field farm-house; Tweed Banks 

 beyond Gainslaw Ford, &c. Thomp. New-Water- 

 Haugh Wood. At Richardson's Stead and Mountholy, 

 &c. April, May. If. 



Was generally used for the purpose of clarifying ale, and 

 giving it a flavour, till the reign of Henry VIII. about 

 which period hops were substituted. WITH. 



172. LAMIUM. 



1. L. album, leaves heart-shaped, pointed, strongly serrated, 

 hairy ; flowers white, about 20 in a whorl ; tube of the calyx 

 shorter than its teeth ; upper lip of the corolla notched, lateral 

 teeth solitary, lanceolate. White Dead-nettle. 



Hab. Waste grounds. May, June, also Sept. If. 



2. L. purpureum, stem leaflets in the middle; leaves heart- 

 shaped, bluntish, unequally crenate, stalked, the upper ones 

 crowded ; calyx- teeth lanceolate ; tube of the purplish-red co- 

 rolla closed, near the bottom, with hairs. Red Dead-nettle. 



Hab. Waste and cultivated grounds. May. Q 



3. L. indsuniy stem leafless in the middle ; leaves heart-shaped, 

 dilated, stalked, irregularly cut, the upper ones crowded ; tube 

 of the red corolla internally naked, marginal teeth dilated, com- 

 bined. Cut Dead-nettle. 



Hab. Road-sides and in fields, frequent in this neighbour- 

 hood. May. 



4. L. amplexlcaule, floral leaves sessile, kidney-shaped, obtuse, 

 deeply crenate, partly lobed, clasping the stem ; teeth of the 

 calyx linear-awl-shaped, as long as its tube ; flowers deep rose- 

 colour. Henbit Dead-nettle. 



Hab. Sandy fields and gardens, common. March-June. 

 



