Marrubium.] labiate. 391 



XIII. Ballota, Linn. 



" Calyx salver-shaped, equal, with 10 ribs and 5 broad mucro- 

 nated teeth, naked within. Corolla with the tube included : upper 

 lip erect, concave ; lower one trifid, middle lobe the largest, emar- 

 ginate. The two anterior stamens the longest. Cells of the 

 anthers diverging, opening longitudinally. Achenes rounded at 

 the end."— Br. Fl. 



1. B. nigra, L. Black Horehound. Stinking Horehound. 

 " Leaves ovate crenato-serrate, bracteas linear-subulate, teeth of 

 the calyx shortly acuminate patent longer than the tube of the 

 corolla:"— er. Fl. p. 314. E. B. t. 46. 



/3. Flowers white. 



In dry waste places, borders of woods and fields, amongst rubbish and on 

 hedgebanks, everywhere ; most plentiful in general on approaching towns and 

 villages. Fl. June — October. If.. 



/3. At St. Lawrence. By the roadside immediately opposite Rew farm, near 

 Ventnor. Lane near Merston. Between Freshwater gate and Farringford hill, 

 Mr . Snooke. In afield between Idlecombe farm and Bottoinground, Rew, in 

 moderate quantity, and growing with the common purple form. 



The plant at Rew is i?. /afirfa. Lam., having very broad, shortly acuminate 

 and recurved calyx-teeth. That at St. Lawrence is B. ruderalis. Fries, with 

 longer, narrower calyx " gracefully dilated upwards,'' the teeth ovato-lanceolate, 

 tapering into long points and erecto-patent. But, as Mr. Bentham observes, 

 " the form of the calyx is so uncertain within the above-mentioned limits, that I 

 cannot distinguish between the three plants figured as species by Reichenbach," 

 a remark to the correctness of which my own repeated observations on our native 

 species enable me to bear testimony. 



The barren stems of Ballota remain green through the winter. 



** Stamens included in the tube of the corolla. 



XIV. Maeeceium, Linn. Horehound. 



" Calyx with 10 ribs and 5 or 10 spreading teeth, the throat 

 hairy. Corolla with the tube exserted : upper /ip erect ; lower 

 one 8-lobed, middle lobe the largest, emarginate. The two ante- 

 rior stamens the longest. Achenes flatly truncated at the end." — 

 Br. Fl. 



1. M. vulgare, L. Common or White Horehound. " Every- 

 where hoary with a white thick pubescence or wooUiness, stem 

 erect, leaves roundish ovate toothed or crenate wrinkled, calyx 

 with 10 setaceous hooked teeth, upper Hp of the corolla oblong 

 bifid."— J5r. Fl. p. 321. E. B. t. 410. 



In dry waste places, pastures, by roadsides and about villages, but .rare in the 

 lower and more level parts; far more abundant on the high chalk-downs, and 

 usually along the earthen or stone fences that traverse them. Fl. June — Sep- 

 tember. If. 



E.Med. — At Bonchurch. Compton farm, Sandown, Mr. Snooke. [Bem- 

 bridge down, A. G. More, Esq., Edrs.] 



W. Med. — Frequent on many parts of Afton down and other places about Fresh- 

 water. On the slope of the down a little above Brook church, in plenty, 1846. 



