PLANTS OF SOUTHERN NEW JERSEY. 387 



gggg. Coarse and often tall, leaves spatulate or lanceo- 

 late, flowers in dense spikes or small clusters, 

 with dry, scarious, often redish bracts. 



Amaranthacee, p. 433 

 ee. Leaves crenate or dentate. 



f. Slightly crenate, flowers in toothed axillary bracts. 



Acalypha, p. 526 

 ff. Irregularly dentate; lanceolate or hastate. 



ChenopodiacecE, p. 432 

 iff. Sharply and evenly dentate, flowers in axillary or 

 terminal flat panicles or cylindrical spikes. 



UrticacecB, p. 414 

 dd. Plants prostrate. 



e. Leaves verticillate. Mollugo, p. 434 



ee. Leaves opposite, fleshy seashore plants. 



f. Leaves broad at base, 8-15 X 4-7 mm., strictly 



opposite. Ammodenia, p. 441 



ff. Leaves spatulate, 5-15 X 3-5 mm., somewhat 



whorled. Sesuvium, p. 435 



eee. Leaves lanceolate or linear. 



f. Seeds three-angled, joints with scarious sheaths. 



Polygonum, p. 419 

 ff. Seeds not three-angled, joints without sheaths. 



[Scleranthus]* or Sagina, p. 439 

 bbb. Calyx apparently absent. 



c. Flowers at base of stem, single or several, maroon or brown. 



AristolochiacecB, p. 418 

 cc. Flowers at summit of pedicels or stems, white, blue or yellow. 



Rnmmculaccce, p. 448 

 bbbb. Sepals and petals present, the latter conspicuous. 



c. Petals united at their bases, often forming a tube or cup. p. 604 



cc. Petals separate from one another. 



d. Stamens numerous, more than ten and more than twice the num- 

 ber of sepals or calyx lobes. 



e. Plants consisting of oval, flattened, fleshy joints, with prickles 

 or bunches of minute spines, flowers large, yellow. 



Opuntia, p. 573 

 ee. Plants with cup-like leaves. Sarracenia, p. 467 



eee. Plants of normal structure, with leaves linear or flat. 



/. Leaves peltate. Podophyllum, p. 459 



ff. Leaves not peltate. 



g. Stamens united in an erect spike or column. 



Malvacece, p. 549 

 gg. Stamens not forming an erect column. 



h. Leaves opposite. Hypericacece, p. 553 



hh. Leaves not opposite. 

 i. Sepals 2. 



* Knawel, a weed in waste ground. 



