18 MICHIGAN ACADEMY OF SCIENCE. 



Most remarkable of all is the absence of any Papilionacece though the 

 family is second in size only to the Composite. The Papilionacece is 

 represented in the State by 43 native species and varieties. 



The number of biennials given in this list is remarkably small, only two, 

 and there are no annuals in it. Sixty-eight out of seventy are perennials 

 and most persistent plants well adapted by long, deep roots and root- 

 stocks to live in poor soil which is subject to severe droughts. Most of 

 them are admirably adapted to survival after a severe fire has burned over 

 the ground and killed the tops of the plants. 



PLANTS INDICATING A FERTILE SOIL. 



Acer Saccharum Marsh. Sugar Maple, when the wood is solid and of fine quality. 



(Acer saccharinum Wang.) 



Acer nigrum Michx. Black sugar maple. 



(Acer saccharinum nigrum Torr. & Gray.) 



Adiantum pedatum L. Maidenhair Fern. 



Angelica villosa (Walt.) B. S. P. Angelica. 



(Angelica Mrsuta Muhl.) 



Apios Apios (L.) Mac M. Ground-nut. 



(Apios tuberosa Moench.) 



Arisaema triphyllum (L.) Torr. Indian Turnip. 



Asplenium angustifolium Michx. Spleenwort. 



Asplenium acrostichoides Sw. Spleenwort. 



(Asplenium thelypteroides Michx.) 



Cassia Marylandica L. Wild Senna. 



Collinsonia Canadensis L. Rich-weed. Stone-root. 



Crataegus tomentosa L. Hawthorn. 



Dentaria diphylla Michx. Toothwort. Pepper-root. 



Dentaria laciniata Muhl. Toothwort. Pepper-root. 



Bicuculla Canadensis (Goldie) Millsp. Squirrel Corn. 



(Dicentra Canadensis DC.) 



Bicuculla Cucullara (L.) Millsp. Dutchman's Breeches. 



(Dicentra Cucullaria DC.) 



Fraxinus Americana L. White Ash. 



Fraxinus quadrangulata Michx. Blue Ash. 



Hydrastis Canadensis L. Golden Seal. 



Hydrophyllum Canadense L. Waterleaf. 



Hydrophyllum Virginicum L. Waterleaf. 



Juglans cinerea L. Butternut. 



Juglans nigra L. Black Walnut. 



Menispermum Canadense L. Moonseed. 



Orchis spectabilis L. Showy Orchis. 



Podophyllum peltatum L. May-Apple. Mandrake. 



Quercus alba L. White Oak. When well grown. 



Quercus macrocarpa Michx. Bur-Oak. 



Ribes Cynosbati L. Prickly Gooseberry. 



Rubus occidentalis L. Black Raspberry. 



Scrophularia Marylandica L. Figwort. 



(Scrophularia nodosa Marylandica A. Gray.) 



Taraxacum Taraxacum (L.) Karst. Dandelion. 



(Taraxacum officinale Weber.) 



Tilia Americana L. Basswood. 



(Jlmus Americana L. American Elm. 



Ulmus racemosa Thomas. Rock Elm. 



Uvularia grandiflora J. E. Smith. Bellwort. 



Verbena hastata L. Blue Vervain. 



When well grown and of good size, several other trees are indications of 

 good soil. 



