LILIACEAE 



11 



li Flowers borne on n leaf) stem 



i 1 ) Flowers or flower clusters borne al the nodes 

 i .1 1 Flowers mostlj in clusters of 2-6, borne in the axils of the 



leaves Polygonatum 



i lii Flowers mostb solitary, borne beside the leaves Streptopus 



or flower clusters terminal 



( a ) Flowers single or few 



\ Stem unbranched. leaves _' Erythronium 



Stem branched, leaves numerous L'vularia 



(b) Flowers numerous in ;i raceme or panicle 



\. Petals with a gland al the base; plant bulbous Zygadenus 



y. Petals without glands : stem arising from a rootstock 



(\> Si-pals 3, petals 2 Smilacina 



i\ ) Sepals 2. petals 2 Maianthevium 



2. Cult i\ ated plants 



i. Flowi fless stems; leaves all basal 



i 1 i Sepals and petals free, some of the flowers often solitary, others 



in r.acemes Scilla 



(2) Sepals and petals united at the base, flowers clustered 

 (a) Flowers small (less than 2.5 cm. long), lasting for several days 

 \. Flowers wheel-shaped, free part of sepals and petals longer 



than the united bases Chionodoxa 



y. Free part of sepals and petals shorter than the united bas 



(x) Flowers globular Muscari 



I j > Flowers hell-shaped 

 m. Leaves linear; plant bulbous Hyacinthus 



n. Leaves ovate-lanceolate; plant with a rootstock Convatlaria 



ihi Rowers large (6-10 cm, long), trumpet-shaped, lasting but 



one day Hemerocallis 



ii. Flowers large (over 2.5 cm. long), home at the top of leaf-bearing 

 ins 



Flower erect, solitary; stem leaves few Tulipa 



(2) Flower nodding, solitary or clustered : stem leaves several-many Fritillaria 



Plate 17: A. Trillium nivale; B, Allium canadense; C, Clintonia borealis; L). Polygonatum 

 biflorum; E, Streptopus longipes; F, L'vularia grandiflora; (I. Erythronium albidum; H. 

 Zygadenus elegans; I. Smilacina racemosa, 1. inflorescence, 2. flower; J. Maianthemum 



canadense. 



Trillium -Wake-robin 



(Of uncertain origin, but probably from Or. tri-, three) 

 PI. 17. fig. A 

 1. I.eave> oval or ovate, obtuse, 2.5 5 cm. long: flowers in April T.nh'dle 



2. Leaves broadly ovate or rhombic, acuminate. 5-17 cm. 

 mostly in May 

 a. Fetals very large. 3.5-6 cm. long, more or less erect 



long : flowt rs 



mdifldrum 



