PLANTS OF SOUTHERN NEW JERSEY. 645 



some respects like miniatures of the white water HHes which 

 occurred side by side with them. 

 Fl. — Early July to late August. 



Middle District.— Dt\2.uco, Center Square (H), Woods Mill (KB), Swedes- 

 boro, Palatine, Centerton (S). 



Pine Barrens. — Pasadena, Webb's Bridge, Ocean Co. (P), 2 miles north 

 Speedwell (S), Vineland (KB), Franklinville, Malaga (S), Winslow, Ham- 

 monton, Atsion (NB), Quaker Bridge (Bassett), Egg Harbor City, Hospi- 

 tality Br., Eighth St. (T), Mays Landing (H). 



Coast Strip. — Deal, Squan, Spring Lake, Pt. Pleasant (KB), Manahawkin. 



Limnanthemum aquaticum (Walt.). Large Floating Heart. 



Anonymos aquatica Walter, Fl. Car. 109. 1788 [Carolina]. — Britton 174. 



The only New Jersey station is a pond near Bridgeton, in 

 Cumberland Co., N. J., where it was discovered by the late Prof. 

 A. C. Apgar, August 5, 1886. 



Pi. — During July and August, probably. 

 Middle ZPw/nVf.— Bridgeton (NB). 



Family APOCYNACE^. Dog Banes. 



APOCYNUM L. 



Key to the Species. 



a. Corolla 5-9 mm. long, its lobes spreading or recurved, white or tinged 

 with pink. 

 b. Corolla 8 mm. long, inflorescence partly axillary. 



A. androscemifolium, p. 645 

 bb. Corolla 6 mm. long, inflorescence strictly terminal. A. medium, p. 646 

 aa. Corolla 3-4.5 mm. long, its lobes erect, greenish white. 



b. Branches of inflorescence and upper side of leaves glabrous. 



A. cannabinum, p. 646 

 bb. Branches of inflorescence and upper side of leaves pubescent. 



A. c. pubescens, p. 646 



Apocynum androsasmifolium L. Dogbane. 



Apocyniim androscemifolium Linnaeus, Sp. PL 213. 1753 [Virginia and 

 Canada]. — Knieskern 25. — Britton 168. 



Frequent in the northern counties and southward mainly in the 



Middle district, elsewhere apparently introduced. 



Fl. — Mid-June to late July or into August. 



Middle District.— Sh^^rk River, New Egypt, Mickleton, Sicklerville, Swedes- 

 boro. 



Pine Barrens. — Ballenger's Mill, Berlin (S), Atsion (S), Forked River, 

 Chats worth. 



