ASCLEPIADACEAE. 261; 



Vineland (C.)- Atlaiitic — B.a,mmonton (C.)- Monmouth — Smithviile 

 (O- Mercer— Princeton (C.)- Middlesex— South Amboy (C.)- Som- 

 erset— Peapack (C.)- 



11. AscLEPiAS QUADRIFOLIA Jacq. M. p. 743. Dry woods and hills. Early 



summer. 



12. AscLEPiAS Syriaca L. Common Milkweed. M. p. 743. Fields and 



waste places. Summer. 



13. ASCLEPIAS VERTiciLLATA L. M. p. 744. Dry fields and hills. Summer. 



P/iitodelp Ma— "Wissahickon (Me.). Bwcfcs— Nockamixon (Fr.). Dela- 

 ware— BarTens of Middletown, Williamson (Cr.), Tinicum Twp. (Fr.), 

 Media (Pr.), Elwyn (U. C. S.), Glen Riddle (St.), Castle Rock (VP.), 

 Cheyney (Ws.). C/iester — Westtown (Ha.) (Le.), near West Chester 

 (Sa.). Lancaster— (P.). Lehigh— XJuionYiile (Kr.). Northampton— 

 (P.). •' 



Burlington— Medford (Br.), Birmingham (C), Oliphant 's Mills (Wa.). 

 Comde?i — Berlin (Br.), Kaighn's Point (C). GioMcester — Glassboro, 

 Clarksboro (C), near Mickleton (He.), Swedesboro (Li.). Cumberland— 

 Millville (Je.), Bridgeton (C). Cape Mat/— Tuckahoe (St.). Monmouth 



— Holmdel, Red Bank, Leedsville, Freehold (C). 



New Casfie- Serpentine Barrens, Brown's, Dixon's, Commons. 



2. ACERATES Ell. 

 1. AcERATES VIRIDIFLORA (Raf.) Eaton. Green Milkweed. M. p. 746. Dry 

 soil. Summer. 

 Philadelphia— East of George's Hill Reservoir (Mac). ^Mcfcs- Sel-' 

 lersviUe (Fr.). Mo/if^omer^/- ShannonvUle (Cr.), Sumneytown (VP.). 

 DeZo«;are— Swarthmore, Williamson, Media, Dr. Geo. Smith (Fu.), Glen 

 Riddle (Le.) (St.), Crum Creek, Bethel (Sch.), Concord (W. Tr.). Ches- 

 ter— (P.). Lancaster— (P.). Berks— Monocacj (Me.). Northampton 



— Easton, Porter (B. C). 



Hunterdon— BarheTto-wn, Kingwood, High Bridge, Holland (C), Lam- 

 bertville (Ws.). MonmoMt/i- Black's Mills (C). Mercer -Pennington 

 (C). Middiesea;- Franklin Park (C). ,Somersef— Pleasant Plains (C). 



New Castle — Newark, Kilvington, Mill Creek, Michener, Centerville, 

 Oakhill, Stanton, Commons; McKee 's. Iron Hill. 



lo. ACERATES VIRIDIFLORA IvESii Britton. M. p. 746. Range of type. 

 Summer. 

 Philadelphia— East of George 's Hill Reservoir (Mac). BucksSeUera- 

 ville (Fr.). 



3. CYNANCHUM L. 

 1. Cynanchum nigrum (L.) Pers. Black Swallowwort. M. p. 747. Es- 

 caped from gardens. Summer. 

 Philadelphia — Bartram 's Garden, Woodlands Cemetery (Te.), below 

 Gray's Ferry (Wn.). Delaware— Media (Gi.), Darby Creek and Bryn 

 Mawr Avenue (Le.), escaped from Painters' Arboretum (S. Tr.), Middle- 

 town (W. Tr.). 



