16 MICHIGAN ACADEMY OF SCIENCE. 



I 



limbs, and looking at a distance not unlike the masts of some great harbor. 

 Thousands of such acres, repellant alike to botanist and settler, can be 

 seen in any of our northern counties. 



"In certain districts considerable beech is found associated with the I 



pine. The soil of such tracts is usually of better quality, and can be ■ 



rendered productive without much labor. It may be noted that in such . 



cases the pine also grows thriftier and makes better lumber." \ 



FLORA OF THE JACK-PINE PLAINS. • j 



The plants of this region are all found in one or more of the regions 

 previously enumerated. 



The soil of these plains is mainly sand of considerable depth which dries \ 



out quickly after a rain, and is then especially liable to be burned over, ! 



the burning often destroying every living plant above the surface of the ' 

 soil. In this way, by repeated burning, much of the vegetable matter is 



removed, leaving the surface soil thin. i 



The following seventy species of plants are almost certain to be found ; 



in considerable quantity on any extended area of Jack-pine plains : } 



4 



a. Those most common. 



Amelanchier Botryapium (L. f.) DC. Shad-bush. ' 



(AmelancJiier Canadensis var. oblongifolia T. & G.) 



Andropogon furcatus Muhl. Finger, or Beard-grass. 



Andropogon scoparius Michx. Beard-grass. ] 



Arctostaphylos IJva-Ursi (L.) Spreng. Bearberry. 



Aster Isevis L. Smooth Aster. ' 



Carex Pennsylvanica Lam. Pennsylvania Sedge. i 



Comptonia peregrina (L.) Coulter. I 



(Myrica asplenifolia L.) . ' 



Danthonia spicata (L.) Beauv. Wild Oat-grass. j 



Epigaea repens L. Trailing Arbutus. 1 



Gaultheria procumbens L. Wintergreen. 



Leptilon Canadense (L.) Britten. Horse-weed. . 



{Erigeron Canadensis L.) ] 



Oryzopsis juncea (Michx.) B. S. P. Mountain Rice. • - 



{Oryzopsis Canadensis Terr.) i 



Pinus divaricata (Ait.) Gord. Gray Pine. Jack Pine. \ 



(Pinus Banksiana Lambert.) j 



Populus tremuloides Michx. Aspen. \ 



Prunus Pennsylvanica L. f. Wild Red, or Pin Cherry. 



Prunus pumila L. Sand Cherry. 



Prunus Virginiana L. Choke-Cherry. [ 



Pteridium aquilinum (L.) Kuntze. Eagle Fern. 



(Pteris aquilina L.) ! 



Quercus coccinea Wang. Scarlet Oak. ' 



Quercus velutina Lam. Black Oak. ! 



{Quercus tinctoria Bartram.) i 



Rumex Acetosella L. Sheep Sorrel. I 



Salix humilis Marsh. Low willow. i 



Solidago nemoralis Ait. Golden Rod. i 



Vaccinium Canadense Richards. Low Blueberry. I 



Vaccinium Pennsylvanicum Lam. Dwarf Blueberry. 



Vaccinium vacillans Kalm. Low Blueberry. 



6. Those less frequent. 



Adopogon Virginicum (L.) Kuntze. Dwarf Dandelion. Virginia Goatsbeard ] 

 (Erigia amplexicaulis Nutt.) 



Agrostis hyemalis (Walt.) B. S. P. \ 



(Agrostis scabra Willd.) Hair-Grass. i 



