LABIATE. 



553 



sometimes 2 by abortion, inserted into the corolla, and alternate with 

 the lobes of the lower lip ; anthers 2-celled, or 1-celled by abortion. 



Kg. 779. 



Fig. 782. 



Pig. 783. 



or by absorption of the septum (fig. 365, p. 223) ; connective some- 

 times large and distractile (fig. 365 c, p. 223). Disk fleshy. Ovary 

 free, deeply 4-lobed (figs. 436, p. 247 ; 779) ; ovules 4 ; style 1, 

 basilar (figs. 436, p. 247; 781 s); stigma bifid (fig. 781 s), usually 

 acute. Fruit consisting of 1-4 achsenia, enclosed within the persistent 

 calyx (figs. 436, p. 247; 782). Seeds erect (fig. 783); albumen 

 either 0, or in small quantity ; embryo erect (fig. 783 e) ; cotyledons 

 flat ; radicle inferior. — Herbs or undershrubs, with tetragonal stems, 

 opposite exstipulate leaves, and cymose inflorescence, the flowers 



Figs. 779-783. Organs of fructification of Lamium album, to illustrate the natural order 

 LabiatEC. Fig. 779. Diagram of tbe ilower, witli the pentamerous calyx ; pentamerous 

 corolla, having two lips, the'upper lip being formed of two united petals, the lower of three ; 

 four stamens, in consequence of one being undeveloped, and four divisions of the ovary. 

 Fig. 780. Entire flower viewed laterally, c. Five-cleft calyx. (, Tube of the corolla. ?s, 

 Upper lip of two petals, li, Lower lip of three, s, Style. Fig. 781. The flower cut 



vertically, c, Calyx, p, Corolla, e, Didynamous 'stamens, s, Style and bifid stigma, o. 

 Ovary. Fig. 782. Fruit (a tetrachranium) cut vertically, showing the carpels, .two of which 

 have been removed, c. Persistent calyx, g, Fleshy disk or gland, r, Gynobasic receptacle 

 bearing the style, s, which is basilar, i.e. arises from the lower;part of the carpels, o. Two 

 carpels, which form achaenia when ripe. Fig. 783. A carpel cut vertically. 33, Pericarp. 

 *, Integument of the seed, e. Embryo erect with inferior radicle. 



