538 



DICOTYLEDONES. 



PIG. 576. Lamium album: A lateral view of flower; B 

 longitudinal section ; C ovary with nectaries (a) ; D the 

 apex of the style; e, upper lip of corolla; c, b, c the three 

 petals of the lower lip ; / anthers ; g stigma. 



small Tipper lip. The upper lip of Teucrium (Germander) is deeply 

 cleft, and the two lobes are bent on their respective sides towards 

 the under lip, which in consequence appears to be 5-lobed, and 

 the upper lip to be wanting. 



2. STACHYDEJ;, BETONY GROUP. The calyx is 5- or 10-nerved. 

 The upper lip of the corolla is most frequently strongly arched or 



helmet - shaped ; 4 

 stamens, the anterior 

 pair the longer (Fig. 

 576). 



a. A somewhat 

 regular and 5-10- 

 dentate calyx with 

 projecting stamens. 

 Stachys (Betony, 

 Woundwort) ; the 

 C ' lobes of the under 



lip are rounded off. 

 The anterior fila- 

 ments, after pollina- 

 tion, bend outwards. 

 Betonica. Ballota (Horehound) ; the calyx is funnel-shaped, and 

 has triangular, long, pointed, awn-like teetlci.^-Galeopsis (Hemp- 

 nettle) has two conical protuberances on the under lip between 

 the lateral and the central lobes. The anthers open by 2 unequal 

 valves. Lamium (Dead-nettle, Fig. 576) has dentate, lateral lobes 



on the under lip. L. album 

 (White Dead-nettle), L. ru- 

 brum, etc. Galeobdolon. Leo- 

 nurus ; Phlomis. 



b. Tubular, regular, often 

 10-toothed calyx and con- 

 cealed stamens. Marrubium 

 vulgare (Fig. 577) ; 10 calyx- 

 teeth, hooked at the apex ; 

 many almost spherical whorls 

 of flowers in the axils of the 

 foliage-leaves, at some dis- 

 tance from one another. 

 Sid&ritis. 

 c. Strongly bilabiate calyx, the lips doting together after 



FIG. 577 .Marrubium vulgare. 



