80 



Large numbers of grasses, many of them of much value in 

 binding together the sand, abound. Andropogon, Uniola, Tri- 

 odia, Siipa, Aristida, Panicum, Panicidaria and Cenchrus are 

 largely represented. Abama, Xerophyllum, Chamaelirium and 

 Chrosperma represent the Melanthaceae. Lilhim superbum, Aletris 

 farinosa and A. aurea are common Liliaceae. 



Of the orchids, Cypripedium acaide, BlepJiariglotlis cristata, B. 

 ciliaris, B. blephariglottis, Gymnadeniopsis clavellata, Pogonia ophio- 

 e~lossoides, P. divaricata, AretJnisa bu/bosa and Limodomm tuber- 

 osum are usual. 



The principal oak trees are Quercus nigra, Q. coccinea, Q. 

 Phellos, Q. minor, Q. prinoides, Q. nana and Q. digitata. The 

 "chinquapin," Castanca pnmila, also occurs. The sweet-gum, 

 Liqiadambar, is a common tree ; in the swamps Magnolia glanca 

 is frequent. 



Of the pink family, Arenaria Caroliniana is very abundant. 



In ponds is found the water lily, Castalia odorata, associated 

 with Brasenia peltata ; also the yellow lotus, Nelumbo hitca, prob- 

 ably introduced from the west by the aborigines. In the marshes 

 occur Sarracenia purpurea, Drosera rotnndifolia and D. inter- 

 media. Drosera filiformis is a true pine-barren plant. 



The saxifrages show no peculiar plants, except /tea Virginica, 

 which is also a pine-barren plant. The rose family here includes 

 two common blackberries, Rubus cuneifolius and R. hispidus, and 

 many wild roses. 



The Papilionaceae are largely represented ; among them, Lu- 

 pinus pereunis, Trifolium arvense, T. agrarium, T. procumbens, 

 Cracca Virginiana, Mcibomia Marylandica, Lespedeza lurta, L. 

 repens, L. angustifolia, Galactia regularis, and species of Phascolus, 

 Stropkosty/es, Apios and other genera. 



The milkwort species are Polygala lutea, P. cruciata, P. brevi- 

 folia, P. incamata, P. Mariana, P. Nuttallii and P. polygama. 

 Corema Conradii is found in the central part of the region and 

 this is probably its southernmost abiding place. 



Ilex glabra is the most usual holly tree. Ascyrum stans is a 

 pine-barren St. John's-wort, but several other species are found. 

 Helianthemum Canadcnsc and about five species of Lcchea com- 



