Labiatae. 113 



^\.—LAMIUM. 



Cal)^ campanulate 5-toothed lo-ribbed, corolla-tube inflated, upper 

 lip arched, lower lip entire prominent with contracted base and one or two 

 teeth on each side, flowers purple white or yellow in many-flowered whorls. 



Flowers yellow, ...... L. Galeobdolon. 



Flowers red white or purple, 458 



458 Flowers white, L. album. 



45S Flowers red or purple, 459 



459 Upper leaves sessile orbicular, . » L. amplexicaule. 



459 Leaves petiolate cordate, 460 



460 Tube of corolla longer than the calyx, . . . L, purpureum. 



460 Tube of corolla shorter than the calyx, . . . . L. incisum. 



LA'MIUM GALEOB'DOLON (61). Archangel. 5—6. Corolla-tube 

 (1154) curved with a ring of hairs inside, upper lip arched, lower lip nearly 



equally 3-lobed, middle lobe spotted red-brown, leaves ovate acuminate 



serrate. Thickets. 



LA'MIUM AL'BUM (100). White Deadnettle. 5-9. Corolla-tube 

 (1153) curved with a ring of hairs, lower lip with one obcordate lobe and 

 lateral teeth, upper lip arched, leaves cordate serrate. Waste places. 



LA'MIUM AMPLEXICAU'LE (91). Henbit Deadnettle. 5—8. 

 (1148, Corolla-tube straight without hairs, lower lip with one obcordate lobe 

 1 149) and lateral teeth, leaves petiolate orbicular deeply crenate, flowers 

 slender rose-coloured. Waste sandy places. 



LA'MIUM PURPU'REUM (no). Red Deadnettle. 4—10. Corolla- 

 (1 151) tube straight with a ring of hairs longer than the calyx-teeth, lower lip 

 with one prominent obcordate lobe and I — 2 lateral teeth, leaves petio- 

 late cordate crenate, flowers purple. Fields and waste places. 



LA'MIUM INCrSUM (73). Cut-leaved Deadnettle. 4—10. Similar 



(1150) to L. purpureum but with leaves deeply serrate, the corolla-tube 



shorter than the calyx and almost without hairs. Fields and waste places. 



yA\.—GALEOPSIS. 



Corolla-tube straight naked inside, upper lip ovate arched, lower lip 3-cleft, 

 middle lobe obcordate or bifid, leaves ovate acute serrate. 



Stem not swollen at the joints, . . . . G. Ladanum. 



Stem swollen at the joints, 461 



461 Flowers purple or white, ...... G. Tetrahit. 



461 Flowers yellow, G. versicolor. 



GALEOP'SIS LAD'ANUM (73). Red Hempnettle. 7—10. Stem 

 (1142) 10 — 12 in., flowers rose-coloured, leaves lanceolate serrate downy. 

 Cornfields and zvasie places. 



