444 



LOBELIACE.E. 



28 genera, including 500 species. Examples Campanula, Phyteuma, 

 Jasione. 



641 642 640 



923. Order 111. r.obeliace<e, the Lobelia Family. (Monopet. 

 Epigyn.) Calyx superior, 5-lobed or entire. Corolla gamopetalous, 

 inserted on the calyx, irregular, more or less deeply 5-cleft. Stamens 

 5, attached to the calyx, alternate with the segments of the corolla ; 

 anthers cohering; pollen oval. Ovary inferior, 1-3-celled; ovules 00, 

 attached either to central or parietal placentas; style glabrous, with a 

 fringe of hairs below the stigma. Fruit a 1- or many-celled capsule, 

 with apicilar dehiscence. Seeds numerous; embryo straight, in the 

 axis of fleshy albumen; radicle pointing to the hilum. Lactescent 

 herbs or shrubs, with alternate, exstipulate leaves. They are found 



Figs. 635-642. Organs of fructification of Campanula Rapunculus, Rampion, to illustrate the 

 natural order Campanulaceaj. 



Fig. 635. Diagram of the flower, showing five divisions of the calyx, five divisions of the 

 corolla alternating with them, five alternating stamens, and five cells of the ovary. 



Fig. 636. Flower-bud, c. Calyx adherent to the ovary, p, Corolla, with valvate aestivation. 



Fig. 637. Vertical section of the flower, c, Calyx cohering with the ovary, o. p, Gamo- 

 petalous corolla, e. Stamens with bilocular anthers. , I/>bed stigma at the apex of the style, 

 which is covered with collecting hairs, o, Ovary containing numerous ovules attached to a 

 central placenta. 



Fig. 638. Horizontal section of the ovary. 



Fig. 639. Fruit crowned by the limb of the calyx, dehiscing by openings at the base. 



Fig. 640. Seed in an entire state. 



Fig. 64L Seed cut vertically, p, Perisperm (albumen), e, Straight embryo in the axis of 

 the albumen, with the radicle pointing to the hilum. 



Fig. 642. Embryo detached, showing its form, the cotyledons and radicle. 



