FLOWEBING PLANTS AND FERNS OF INDIANA. 569 



sopifolium also occur, but are less abundant than on the middle beach. 

 The shrub life of the upper beach stretches is sparse, the forms are rela- 

 tively scattered, while the plant body is stunted and bears visible signs 

 of the severe environment. The shrub of most common occurrence is 

 the sand cherry, Primus pumila. Poplars occasionally occur, the forms 

 being the cotton wood, Populus deltoides and P. bahamifera, both the type 

 anjl the variety candicans. The willows maintaining themselves in this, 

 situation are Salix fiuviatilis, S. glaucophylla and S. adenophylla. 



PLANTS OF ACTIVE DUNES. 



Equisetum hyemale L. 



Andropogon scoparius Michx. Beard Grass. 



Ammophila arenaria (L.) Link. (= A. arundinacea Host.) Sea Sand- 



reed. 

 Calamovilfa longifolia (Hook) Hack. (—Calamagrostis longifolia Hook). 



Reed Bent grass. 

 Elymus Canadensis L. Wild Rye. 

 Popuhts deltoides Marsh. (= P. monilifera Ait.) Cottonwood. A 



very common form in this situation. 

 Salix jiuviatilis Nutt. (— S. longifolia MuhL). 

 Sali.r glaucophylla Bebb. 

 Salix adenophylla Hook. 

 Primus Virginiana L. Choke-cherry. 

 Vvtis cordifolia Michx. Frost-grape. 

 Cornus stolonifera Michx. Red-osier. Dogwood. 

 Cornus Baileyi Coult. and Evans. 



Asclepias Syriaea L. (= A. Cornuti Decris.). Common Milkweed. 

 LUhospermum Gmelini (Michx. ). A. S. Hitchcock. (= L. hirtum 



Lehm.) Puccoon. 

 Solidago Virgaurea Gilmani (Gray) Porter. (= S. humilis Gilmani Gray.) 

 Coiispermum hyssopifolium L. Bug-seed. 



PLANTS OF THE BASS WOOD DUNES. 



Hepatica Hepatiea (L. ) Karst. (= H. triloba Chaix.) Liver-leaf. Hepa- 



tica. 

 Sassaf7-as Sassafras (L.) Karst. (= S. officinale Nees and Eberm.) 



Sassafras. 

 Hamamelis Virginiana L. Witch-hazel. 

 Rosa acicularis Lind. (= R. Engelmanni S. Wats.) 

 Ptelea trifoliata L. Shrubby Trefoil. Hop-tree. 



Rhus aromatica Ait. (= R. Canadensis Marsh.) Sweet-scented Sumach. 

 Rhus radicans L. (== R. Toxicodendron of American authors in part.) 



Poison Ivy. Poison Oak. 

 Cdastrus scandens L. Wax-work. Climbing Bitter-sweet. 



