LILY FAMILY 
i) 
in 
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12, 
The Lily family contains more than 2000 species, a 
great many of which are cultivated for food or the beauty 
of their flowers. The most important vegetables of this 
family are Asparagus and Onion, the latter one of the 
earliest of cultivated plants and well known to the ancient 
Egyptians and Hebrews. Some major garden flowers are 
the Tulip, Lily, Day Lily, Hyacinth, Spanish Bayonet and 
Lily of the Valley. 
In this and a few other families it is often difficult to 
separate calyx and corolla, as the perianth is composed 
of 6 similar parts. 
KEY TO GENERA 
Flowers light blue............. 1 poy Sec eee Camassia p. 
Flowers not. blue. ..:. 0. 2.3...) 1 eee 
Flowers in umbels.) :: 2): 24.4. ..00. 1.48. 
Flowers not in umbels.............. So. iG oe. 5) oe 
Leaves all basal; odoristrong s: <4 y... eee Allium p. 
Leaves not all basal; odor not strong.............Smilax p: 
Leaves mostly whorled 22.) i700... 0.70. 
Leaves not whorled:..24. .46 «tos. oss eer 
Leaves’3, intl “whorl... 0.0 2 seo ee eee Trillium p. 
Leaves: in. ‘more than)) whorl: . :.\3. -3-otae Lilium p. 
Leaf bases grown around the stem............ Uvoularia p. 
Leaf. bases’ not gray, around stem... .d,0/4.+./4 sae a 
Leaves 1 or usually 2 in flowering plants................-- 
Leaves: more than 20.0348. 480210>. 0.2 80 Ro 
Ledves all basal’ o70 Sos ritess cle te eee Erythronium p. 
Reaves .on.stem , 150.3%)... wees, cok eae eee Matanthemum p. 
Leaves all basal. :.. vac 2k. oS. 
Léaves off stem... 0.0. Oo eget on) eee 
Ieaves rigid and sharp’ pointed .....% 2.352 Yucca p. 
Leaves neither rigid nor sharp pointed.... Hemerocallis p. 
Style Pee i get eee Oe See 
PASS ey. BU Tofieldia p. 
Flowers in the axils of leaves............... Polygonatum p. 
Flowers in a terminal inflorescence.................. pee 
Perianth of 6 separate parte... Gee ed Smilacina p. 
Perianth tubular and 6-lobed.o.. . ¢.4...3., cone Aletris p. 
LILIACEAE 
SI 
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57 
62 
53 
57 
62 
