DICOTYLEDONES : GAMOPETAL^. 



657 



The gynoeceum is often oligomeroas, and then usually trimerous {e.g. 

 most species of Campanula and Phyteuma), sometimes bilocular (Jasione, 

 species of Phyteuma) : when isomerous, the carpels are either antisepalous 

 and therefore opposite to the stamens (e.g. a few species of Campanula, Fig. 

 312, Michauxia, Wahlenbergia), or antipetalous and therefore alternate with 

 the stamens {e.g. Musschia, Platycodon). 



Fig. 456. — Andrcecium and gynaeceum of 

 Campanula : / inferior ovary ; c insertion 

 of the corolla ; a anthers ; h expanded base 

 of the stamens ; w stigmata (mag.)- 



Fig. 457.—^ Floral diagram of a spe- 

 cies of Campanula with a trimerous 

 ovary {e.g. C. persicifolia) ; o gynaeceum 

 of Lobelia. 



Campanula rotundifolia, the Hare-bell, glomerata, and other species are com- 

 mon in fields, on heaths, etc., etc. : C. Medium is the Canterbury-bell cultivated 

 in gardens. Phyteuma orhiculare and gpicatum, the Rampions, are indigenous 

 in parts of England ; the flowers are in capitula, and the calyx is deeply 5 cleft 

 with spreading teeth : nearly allied is the genus Jasione ; J. montana, the 

 Sheep's-bit, is common in England. Specularia has a rotate corolla ; S. 

 Speculum, Venus's Looking-glass, is cultivated. 



Order 2. LoBELiACEyE. Flowers dorsi ventral, resupinate (Fig. 

 458; see p. 511): the corolla commonlj forms a tube which is 

 more or less cleft on one side, and 

 the limb is divided into two lips, 

 the lower one consisting of three 

 lobes (Fig. 458^, u), and the upper 

 of two smaller ones (^1, o) : at their 

 first formation the position of these 

 parts is exactly the reverse, but 

 in the course of development the 

 pedicel undergoes torsion, so that 

 those parts which are originally 

 posterior become anterior, and vice 

 versa : anthers syngenesious (Fig. 

 458 B, sr) and unequal in con- 

 sequence of the dorsiventrality of 

 the flower : ovary 1-, 2-, or 3-locn- 



FiG. 458. — i4 Flower of Lobelia: / 

 ovary ; fc calyx ; o upi>er, u under lip of 

 the corolla ; 8 stamens. B Andrcecium 

 and gyneeceum of the same : sr tube 

 formed by the stamens ; an anthers 

 (mag.^. 



