LABIATiE. 81 



GENUS XIX.— H E U C R I U M . Liniu 



Calyx tubular or campanulate, frcqueutly subbilabiatc, from the 

 uppermost tooth bemg more spreading than the others ; teeth 5, 

 generally not spinous-pomted. Corolla subunilabiate ; tube rather 

 short ; upper lip very short, slit do^v^l to the calyx tube ; lower lip 

 3-lobed, the middle lobe larger than the others, and often notched: 

 from the splitting of the upper lip its segments appear to belong to the 

 lower lip, which thus seems to have 5 lobes instead of 3. Stamens 4; 

 filaments subparallel, protruded through the slit in the upper lip; 

 anther-cells joined at the apex, and diverging nearly in a straight line, 

 opening by a longitudmal slit common to both. 



Herbs, undershrubs, or shrubs of various habit. 



This genus of plants is named in honour of Teuccr, a medical botanist, its disco- 

 verer. 



Section I.— CHAMiEDRYS. Mdnch. 



Verticillasters 2 to 6-flowered, distinct (not approximate, so as to 

 form a distinct spike or head), with all the bracts, or at least the 

 lowest pairs, like the leaves. Calyx of 5 nearly equal teeth, the 

 uppermost one not s^ireading. 



SPECIES I— TEUCRIUM BOTRYS. Lbm. 



Plate MXCLI. 



Beiclu Ic. Fl. Germ, et Helv. Vol. XVIII. Tab. MCCXXXIX. Fig. 1. 

 Billot, Fl. Gall, et Germ. Exsicc. No. 835. 



Annual. Stem wiry, erect, generally branched at the base, and also 

 paniculately branched above ; branches ascending-spreading. Leaves 

 all stalked, trifid, with each of the 3 segments cleft or trifid, or the 

 central one pinnatifid with 2 pairs of segments and a termuial one ; 

 ultimate segments strapshaped, entire, paler and densely clothed with 

 glands beneath, and with the principal veins very prominent. Bracts 

 similar to the leaves, stalked, the upper ones much smaller. Vcrti- 

 cUlastcrs 4 to 6-flowered, arranged in a lax raceme, occupying the 

 greater part of the stem or branches. Calyx glandular-pubescent, 

 inflated, saccate at the base on the lower side; teeth erect, deltoid- 

 triangular, nearly equal, half the length of the tube, mmutely spinous- 

 mucronate. Corolla about twee as long as the calyx. Nucules tri- 

 gonous-subgloljose, deeply pitted-honeycombed. Plant glandular- 

 pubescent. 



VOL. VII. M 



