294 BIOLOGY. 



seed-lobes ; consequently all seeds of sexual plants have 

 seed-lobes or cotyledons. 



1578. Now the perfect seed is the whole plant in 

 miniature with root, stalk, and leaf. This formation is, 

 however, only possible where there is a sex, or where the 

 vegetable tissues have emerged self-substantially from 

 each other. 



1579. But the anthers are buds upon a floral rib ; 

 consequently all sexual plants must have a part of the 

 blossom, which ranks in the signification of leaf, and 

 thus either the calyx or, with this also, the corolla. 



1580. All sexual plants must have a shaft or scape, in 

 which its three parts, bark, liber, and wood, are to be distin- 

 guished ; even so must the three parts of the stem, the root, 

 stalk, and leaf, have the parts of the blossom which cor- 

 respond to them, viz. seed, ovarium, and calyx or corolla. 



1581. The sexual plants next divide into Stock- and 

 Blossom-plants, the former of these parting into Shaft- 

 and Stem-plants. 



Second Province. 



SHAFT-PLANTS MONOCOTYLEDONES. 



1582. In the Shaft-plants the invagmate character is 

 predominant, the wood being surrounded by liber, and 

 this by bark ; they are therefore tubular in form tubular 

 plants. 



1583. The cellular tissue preponderates in them, and 

 the tracheal fascicles form therefore no closed circle, but 

 are dispersed ; scattered fasciculi cannot, however, ramify 

 but only pursue a straight course and form streaks 

 striated plants. 



1 584. Ramification is wanting unto these plants, partly 

 on account of their tubular form, partly on account of 

 the smaller quantity of tracheal fascicles aramose plants. 

 A vegetable stem without branches is called shaft or 

 scape ; thus they are shaft-plants. 



1585. The blossoms do not stand upon ramules, but 



