114 FLORA OF FHIL.U)K1J'HIA. 



Ca7ndew— Camden (C.)- Gloucester— ^eweW, Mullica Hill (C), uear 

 Mickleton (He.), Swedesboro (Li.). Merce?-— Princeton, Trenton (C). 

 New Castle — Mount Cuba (Le.). General, but not common. 



3. CoRALLORHiZA WiSTERiANA Conrad. M. p. 30.5. Woods. Spring. 



PWiadeip/ifa— Wissahickon (Re.). Chester— {V.). Lancaster— {V.). 



4. CORALLORHIZA MULTIFLORA Nutt. M. p. 306. Woods. Summer. 



P/ittodeZp/iia— Wissahickon (Re.). 5mcAs— Durham (Fr.). iJontgom- 

 er?/— Shannonville (Cr.), Bryn Mawr (Gi.), near Ardmore (Le.). Dela- 

 ware— S-warthmore (Pr.), Concord (W. Tr.). Chester— (P.). Lancaster 

 —York Furnace (Ja.) (Ke.) (Li.). Ber^s— Mount Neversink, Mart. (B, 

 C), Hamburg (Ke.). Lehigh— Woods near Geissinger 's, E. A. Eau (B. 

 C), Lehigh Mountain (Kr.). 



Caw rZe?!— Camden (C). Hunterdon — Hosemont (C). 



New Castle — McCullough 's, Canby. 



Subclass 2. DICOTYLEDONES. 



Series]. CHORIFETALAE. 



Order 1. PIPER ALES. 



Family 1. SAURURACEAE Lindl. Lizard's-tail Family. 



1. SAURURUS L. 

 1, Saururus cernuus L. Lizard's Tail. M. p. 307. Swamps. Summer. 



Order 2. SALIOALES. 

 Family 1. SALIC ACEAE Liiull. Willow Family. 



Bracts fimbriate or incised ; stamens numerous. 1. Populus. 



Bracts entire; stamens 2-10. 2. Salix. 



1. POPULUS L. 



Petioles terete or channelled, scarcely or not at all flattened laterally. 



Leaves persistently and densely white-tomentose beneath, lobed or 



coarsely sinuate-dentate. 1. P. alba. 



Leaves glabrous or nearly so when mature, crenate. 



Foliage densely tomentose when young; capsule slender-pedicelled. 



2. P. heterophylla. 

 Foliage not tomentose; capsule short-pedicelled. 



3. P. candicans. 

 Petioles strongly flattened laterally. 



Leaves broadly deltoid, abruptly acuminate. 



Young leaves pubescent ; capsule nearly sessile. 



4. P. nigra. 

 Young leaves not pubescent; capsule slender-pedicelled. 



5. P. deltoides. 

 Leaves broadly ovate or suborbicular. 



Leaves coarsely sinuate-dentate. 6. P. grandidentata. 



Leaves crenulate-denticulate. 7. P. tremuloides. 



1. Populus alba L. White Poplar, Abele. M. p. 308. Occasionally spon- 

 taneous. Early spring. 



