LABIATE. 77 



occur in all the other British species. Nucules generally abortive: 

 at least I Imve never liecu able to liiid tliciu mature, riant li^'ht 

 •rrieii, more or less thickly pubescent with rather stiff hairs, those 

 on the stem dcfli'xeil. 



The British plant has the upper bracts usually narrow, and is the 

 Calcubdolon montanum of Keiclicnbach. Occasionally, however, I 

 have seen the bracts all broad and similar to the leaves (G. luteum, 

 Ji\'ic/i.), but the two forms certainly do not dcsei've to be called even 

 \-arieUes. 



Yellow Archangel. 

 French, Lamier jaune. German, Goldii^sel. 



Tride VI.— AJUGOIDEyE. 



Corolla apparently 1 -lipped, from the upper lip being very short or 

 split down the middle. Stamens 4 (rai'ely 2), parallel, the outer or 

 lower pair the longest ; anthcre 2-celled, the cells contiguous. 



GENUS XVIIL— A3 VGA. Linn. 



Calyx tubular, scarcely enlarging in fruit ; limb erect or ascending, 

 witli 5 teeth, which arc not spinous-pointed. Corolla subunilabiate; 

 tube rather long; the upper lip very short, notched, the lower one 

 sjjreading, 3-lobed. Stamens 4; filaments subpai-allel, protruding 

 beyond the upper \i\) of the corolla; anther-cells joined at the apex, 

 and diverging nearly in a straight line, opening by a longitudinal slit 

 common to both. 



Low herbs of various habit. 



The name of this genus of plants seems to be a corruption of the Latin word ahigo, 

 to drive away, in allusion to its remedial qualities. 



Section I.— BUGULA. Tournef. 



Verticillasters 6 to many-flowered. Corolla blue, rose, purple, or 

 white, never yellow. 



SPECIES I.— A JUG A REPTANS. Litm. 



TiATK JMLXXXVUI. 



Iteich. Ic. Fl. Germ, ct Helv. Vol. XVIH. Tab. MCCXXXIV. Fig. 3. 

 BUM, Fl. Gall, ct Germ. Exsicc. No. 130t. 



Perennial. Rootstock almost always emitting elongated runnerlikc 

 stolons with distant pairs of leaves. Flowering stems erect, the lateral 

 ones curving upwards, simple, with 1 or 2 pairs of leaves. Radical leaves 



