42 



LILIACEAE 



1). Petals 1.5-3.5 cm. long, spreading or strongly recurved 



(1) Peduncles of the flower 3-10 cm. long, erect or declined, petals 



spreading T. declinatum 



(2) Peduncles of the flowers 3 cm. long or less, recurved beneath 



the leaves, petals recurved T. ccrnuum 



Allium — Onion 



i].. allium, garlic) 



PI. 17, fig. B 



1. Leaves ovate-lanceolate, in earliest spring, withering before the flowers 



appear A. tricoccum 



2. Leaves linear, present during flowering 



a. Flowers mostly replaced by bulblets ; fruit not crested A. canadense 



b. Flowers rarely replaced by bulblets; fruit crested A. reticul&tum 



Clintonia 

 (Named for DeWitt Clinton) 

 PL 17, fig. C 

 Herb with broad basal leaves, and an umbel of drooping flowers C. boredlis 



Polygonatum — Solomon's Seal 



(Gr. polygonaton, knot-grass) 

 PI. 17, fig. D 

 1. Leaves pubescent beneath; filaments slender, rough P. biflorum 



2 Leaves glabrous ; filaments smooth and flattened P. commutdtum 



Streptopus — Twisted-stalk 



(Gr. streptos, twisted, pons, foot) 

 PL 17, fig. E 



1. Leaves smooth, strongly clasping; pedicels of flowers abruptly bent 



in the middle 5. ample xifdlius 



2. Leaves hispid along the margin, slightly clasping ; pedicels of flowers 



slightly bent 5". longipes 



Erythronium — Adder's-tongue (Dog's-tooth Violet) 



(Gr. erythronion, a plant with red) 

 PI. 17, fig. G 



1. Stem with a fleshy offshoot below the leaves ; flowers rose-colored E. propullans 



2. Stem without a fleshy offshoot 



a. Flowers yellow, stigmas very short E. amcricdnum 



b. Flowers white or tinted with purple, stigmas recurved E. dlbiduui 



Uvularia — Belhvort 



(L. nva, the soft palate) 

 PL 17, fig. F 



1. Leaves perfoliate; flowers lemon yellow 



a. Leaves glabrous, glaucous; sepals and petals rough within U.perfoli&ta 



b. Leaves pubescent beneath; sepals and petals smooth within U. graudiflora 



2. Leaves sessile; flowers greenish yellow ('. sessilifolia 



Zygadenus — Zygadenus 



(Gr. zygon, yoke, aden, gland) 

 PL 17, fig. H 

 Gland of the petal obcordate, petals 8-10 mm. long Z. Slegans 



Smilacina — False Solomon's Seal 



(Diminutive of Smilax) 



(Vagnera) 



PL 17, fig. I : 1, 2 



1. Leaves numerous 



a. Flowers numerous, panicled S. raccuiosa 



b. Flowers few-several, racemose 5". stelldta 



2. Leaves 2-4; flowers few-several S.irifolidta 



