JoNE: Flora of Illinois, 38. Salicaceae 101 



11. Aplectrum Nutt. 

 A. hyemale (Muhl.) Torr. Puttyroot. Rich woods, rare. May-June. 



12. CoRALLORRHiZA R. Br. — Coralroot 

 1. Lip with 2 basal lobes or teeth; mature capsules 1-1.6 cm. long; woods, rare. 



Peoria, Brendel; Forest Hill, Hill. July-Aug. Spotted Coralroot 



C. maculata Raf. 



1. Lip entire or denticulate; mature capsules not more than 1 cm. long; woods, 



rare. Menard Co., Hall; Peoria, Brendel; Carlinville, Andrews. Aug.- 



Sept. Late Coralroot C. odontorhiza (Willd.) Nutt. 



Class II. DICOTYLEDONEAE Juss. 

 37. Saururaceae Lindl. — Lizard-tail Family 



1. Saururus L. 



S. cernuus L. Lizard-tail. Wet ground in woods, or on muddy shores; 

 locally abundant; extending northw. to Peoria and Vermilion counties. June- 

 Sept. 



38. Salicaceae Lindl. — Willow Family 



1 . Catkin-scales fimbriate; leaves mostly broad, long-petioled ; buds with several scales 



1. Populus 



1. Scales entire; leaves usually narrow and short-pelioled; bud-scale one 2. Salix 



1. Populus L. — Poplar 



1. Petioles terete or nearly so, not strongly flattened lateral! v. 

 2. Buds small, pubescent or glabrous, not viscid. 



3. Leaves sinuate-dentate to lobed; capsules 2-4 mm. long; catkin scales 

 fringed with silky hairs; stigmas linear; bark smooth, whitish gray, 

 rough only at the base of old trunks; introduced species. 

 4. Leaves persistently densely white-tomentose beneath, 3-5-lobed or 

 irregularly dentate; buds copiously white-tomentose; stigmas yel- 

 low; roadsides and yards, often escaped from cult.; introd. from 

 Eurasia. Apr. White Poplar P. alba L. 



4. Leaves glabrous at maturity, gray-canescent beneath when young, 

 glabrate, the margins sinuate-dentate; bud-scalej ciliate or finely 

 pubescent; stigmas purple; introd. from Eur.; cult., and persisting 

 in a few places. Gray Poplar P. canescens (Ait.) Sm. 



3. Leaves crenate-serrate, ovate, cordate at base, long-petioled, tomentose 

 when young, becoming glabrous or remaining floccose beneath; bark 

 furrowed; capsules 7-9 mm. long; catkin-scales glabrous; stigmas 

 broad; borders of swamps, local; s. 111., extending northw. to Craw- 

 ford Co. Apr. -May. Swamp Cottonwood P. heterophylla L. 



2. Buds (at least the terminal) elongated, pointed, glabrous, glossy, resi- 

 nous-aromatic; leaves pale beneath, crenulate-serrate; bark smooth; 

 capsules on short stout pedicel,"^; catkin-scales with silky hairs; stigmas 

 broad. 



