300 BIOLOGY. 



1624. The other division has regular 2 X 3ary 

 corollae, with perfect glume-capsules and middling-sized 

 seeds, as the Iridese and Liliaceas proper. 



1625. The first order, Parenchymatose lilies. The 

 corollae are irregular, bilabiate, and stand upon the calyx 

 and a membranous sexlocular capsule with very small 

 seeds ; are divided according to the pollen e. g. pul- 

 verulent Orchidece. 



1626. The second order, Sheath-lilies. Characters 

 similar to those of the preceding order, but the pollen is 

 agglomerated into waxy granules granular orchidece. 



1627. The third order, Stem-lilies. The corollas 

 are likewise bilabiate and situated above the calyx, but 

 the ovarium contains few seeds, and the capsule is mostly 

 nut-like aromatic plants, such as the Scitaminece and 

 Mtcsacete. 



1628. The fourth order Floral-lilies, have regular 

 blossoms, separated into calyx and corolla, placed above 

 the capsule, and mostly furnished with three stamina. 

 Here belong the Hypoaeidea, Hcemodoracetf and Iridece. 



1629. The fifth order, Fruit-lilies. The leaves have 

 not yet completely separated from each other, but 

 still form bulbs; the corollas are regular, have six 

 stamina, and are placed beneath the capsule, as in the 

 true lilies. To this order belong the (McJiicacea, Aloince 

 and Liliacece. Their bulbs contain mostly acrid matters. 

 They divide into sixteen families. (Vid. Tab. B.) 



CLASS VI. 



Wood-plants Palmacece. 



Plants with icoody shaft and ivith fruits, mostly en- 

 closed in spadices. 



1630. The desiccation of the cells and fibres is pro- 

 moted by the increased process of oxydation. Where 

 therefore the tracheae attain the preponderance, there the 

 conversion into wood originates. 



1631. The stalks of these plants are not hollow, but 

 have a dense interior, because the fasciculi of tracheae lie 

 within the liber, and there increase. 



