CLASSIFICATION OF DICOTYLEDONS. 



221 



of the family Campanulacece, and numerous species are com- 

 mon, both, wild and cultivated. 



The various species of Lobelia, of which the splendid cardi- 

 nal-flower (L. Cardinalis) (Fig. 123, E) is one of the most 



FIG. 124. Anisocarpous sympetulse (Aggregate) . A, flowering branch of 

 Houstonia purpurea, x 1 (Rubiacese). JB, vertical section of a flower, x 2. 

 C, fruit of bluets (Houstonia ecerufea), x i. J}, cross-section of the same. 

 E, bedstraw, Galium (Rubiacese), x y 2 . F, a single flower, x 2. G, flower 

 of arrow-wood, Viburnum (Caprifotiacese), x* 2. H, the same, divided 

 vertically. /, flowering branch of trumpet honeysuckle, Loniccera (Capri- 

 foliacese), x %. J, a single flower, the upper part laid open, x 1. K, dia- 

 gram of the flower. L, part of the inflorescence of valerian, Valeriana, 

 (Valerianese) , x 1. M, young; N, older flower, x 2. 0, cross-section of the 

 young fruit; one division of the three contains a perfect seed, the others 

 are crowded to one side by its growth. P, inflorescence of teasel, Dipsacus 

 (Dipxacese), x y 4 . fl. flowers. Q, a single flower, x 1. R, the same, with 

 the corolla laid open. 



beautiful, represent the very characteristic family Lobeliacem. 

 Their milky juice contains more or less marked poisonous 

 properties. The last family of the order is the gourd family 

 (Cucurbitacece) , represented by a few wild species, but best 

 known by the many cultivated varieties of melons, cucumbers, 



