CLASSIFICATION OF THE MONOCOTYLEDONS. 155 



The principal family of the Liliijlorceis the Liliacece, includ- 

 ing some of the most beautiful of all flowers. All of the true 

 lilies (Lilium), as well as the day lilies (Funkia, Hemerocallis) 

 of the gardens, tulips, hyacinths, lily-of-the-valley, etc., belong 

 here, as well as a number of showy wild flowers including sev- 



FIG. 84. Types of Liliiflorse. A, flower of the common blue-flag (Iris), x % 

 (Iridacese). B, the petal-like upper part of the pistil, seen from below, and 

 showing a stamen (an.), st. the stigma, x %. C, the young fruit, x %. D, 

 section of the same, x i. E, diagram of the flower. F, part of a plant of the 

 so-called " gray moss " (Tillandsia) , x y 2 (Bromcliacese). G, a single flower, 

 x 2. H, a seed, showing the fine hairs attached to it, x l. /, plant of 

 pickerel- weed (Pontederia), x i/ 4 (Poniederiacese) . J, a single flower, x 1. 

 K, section of the ovary, x 4. 



eral species of tiger-lilies (Lilium), various species of Tril- 

 lium (Fig. 83, A), Solomon's-seal (Polygonatum) (Fig. 83, B), 

 bellwort (Uvularia), and others. In all of these, except Trillium) 

 the perigone leaves are colored alike, and the leaves parallel- 

 veined; but in the latter the sepals are green and the leaves 

 broad and netted-veined. The fruit of the Liliacece may be 



