PLANTS OF SOUTHERN NEW JERSEY. 647 



c. Leaves narrowly linear, 2>-7 in a whorl ; corolla greenish- white, 



hood white. A. verticillata, p. 651 



cc. Leaves ovate or lanceolate 3-4 in a whorl, corolla pink, hood 



white. A. quadrifolia, p. 650 



bbb. Leaves glabrous or in some species downy-pubescent, opposite. 



c. Corolla bright red, hood orange, leaves linear lanceolate. 



A. lanceolata, p. 650 

 cc. Corolla and hood various shades of pink or purple. 

 d. Plant essentially glabrous. 



e. Leaves oblong, clasping at the base, margins wavy. 



A. amplexicaulis, p. 648 

 ee. Leaves not wavy margined. 



f. Leaves lanceolate, acute or acuminate. A. rubra, p. 648 

 ff. Leaves oblong rounded at the end. 



A. purpurascens, p. 648 

 dd. Plants pubescent, especially on the under side of the leaves. 

 e. Leaves 10 — 12x3 — 3.5 mm., often lanceolate. 



A. pulchra, p. 649 

 ee. Leaves 12 — 15 x 5 — 7 mm., oblong. 



f. Flowers entirely purple. A. purpurascens, p. 648 



//. Flowers more or less greenish. A. syriaca, p. 651 



ccc. Corolla white or green, hood white or pinkish. 



d. Corolla green, plant 10-20 dm. high. A. exaltata, p. 650 



dd. Corolla white, plant 3-9 dm. high. A. variegata, p. 649 



ad. Corolla crov/n, without incurved horns, flowers entirely green. 



Acerates viridiHora, p. 651 



ASCLEPIAS L. 



Asclepias tuberosa L. Butterfly Weed. 



PI. CVIIL Fig. 2. 



Asclepias tuberosa Linnaeus, Sp. PI. 217. 1753 [North America]. — Knies- 



kern 25. — Britton 170. — Keller and Brown 259. 

 Asclepias decumbens Keller and Brown 260. 



Open sandy ground ; common throughout the State, except in 

 the Pine Barrens, where it has apparently been introduced, and 

 is only common locally in cultivated ground. 



Pi. — ^Late June to early August, sporadically somewhat later. 



Middle Dwfrzc^— Farmingdale, New Egypt, Haddonfield (S), Medford 

 (S), Washington Pk., Tomlin (S), Mickleton, Clementon, Sicklerville, Beaver 

 Dam. 



Pine Barrens. — Landisville, Vineland (S), Egg Harbor City, Folsom, Man- 

 umuskin (S), Woodbine (S). 



Coast Strip.— Ft. Pleasant, Manahawkin, St. Albans (L), West Creek (S), 

 Tuckerton, Atlantic Cit}-, Pleasantville, Mays Landing (S), Sea Isle Jnc. (S). 



Cape May.— Cape May (UP). 



