570 REPORT OF STATE GEOLOGIST. 



Vitis cordifolia Michx. Frost or Chicken-grape. 



Parthenocissus quinquefolia (L.) Plancb. (= Ampelopsis quinquefolia 



Michx.) Virginian Creeper. 

 Tilia Americana L. Basswood. This is the characteristic tree of this 



type of dune. 

 Fraxinus Americana L. White or Gray Ash. 



Vagnera trifolia (L.) Morong. (= Smilacina stellata Desf.) False Solo- 

 mon's Seal. 

 Smilax hispida Muhl. Greenbrier. Catbrier. 

 Ostrya Virginiana (Mill) Willd. Hop-hornbeam. Ironwood. 

 Celtis occidentalis L. Hackberry. Sugarberry. The form is the low 

 straggling shrub that is given in Gray's Manual, Sixth Edition, as 

 variety pumila. 

 "One of the most remarkable features of the basswood dunes is the 

 luxuriant development of lianas. -Scarcely anywhere away from the 

 river bottom forests is there such a development of climbers as in this 

 region. Celastrus scandens, Vitis cordifolia and Rhus radicans occur almost 

 everywhere. Parthenocissus quinquefolia and Smilax hispida are not un- 

 common. The great liana development may be correlated, perhaps, 

 with the dense growth of trees." 1 



PLANTS OF EVERGREEN DUNES. 



Pinus Strobus L. White Pine. 



Pinus divaricata (Ait.) Sudw. (= P. Banksiana Lam.). Gray or Northern 



Scrub Pine. The character tree of this type of dune. 

 Juniperus communis L. Common Juniper. 

 Juniperus Virginiana L. Red Cedar. 

 Andropogon scoparius Michx. Beardgrass. 

 Prunus pumila L. Dwarf Cherry. 

 Hudsonia tomentosa Nutt. 



Lepargyrcea Canadensis (L.) Greene (= Shepherdia Canadensis Nutt). 

 Epigaza repens L. Ground Laurel. Trailing Arbutus. 

 Gaultheria procumbens L. Creeping Wintergreen. 

 Arctostaphylos Uva-Ursi (L.) Spreng. Bearberry. The character shrub 



of the evergreen dunes. 

 Lithoapermum Gmelini (Michx.) A. S. Hitchcock (= L. hirtum Lehm.). 



Puccoon. 

 Melampyrum linear e Lam. (= M. Americanum Michx.). Cow Wheat. 

 Solidago nemoralis Ait. Goldenrod. 

 Solidago Virgaurea Gillmani (Gray) Porter (= Solidago humilis Gillmani 



Gray). 

 Aster lands L. Blue Aster. 



l Cowles, H. C. — The Ecological Relation* of the Vegetation n» the Sand Dunes of Lake 

 Michigan.— Bot. Gaz., Vol. 27, No. 5, p. 362. 



