An Annotated List of the Pteridophytes of North-Western Ontario: II

The taxonomy and phytogeography of bracken-a review

“…latiusculum ranges southward to Oklahoma and Tennessee, with isolated outposts in other states. It is an abundant plant of sunny, sandy slopes, low thin woods and acid soil situations generally in the District of Columbia (Hitchcock & Standley, 1919;Maxon, 1919), is present in Alberta and Manitoba (Boivin, 1942) and occurs abundantly in open sandy terraces and in open birch-aspen woods west and north-west of Lake Superior and on Manitoulin Island (Jennings, 1918;Soper, 1963). It is the only fern of the sandy soil of pine plains where it grows especially in areas of strong light, but is rare or absent in the dense shade of woodland of Red or White Pine in Michigan (McFarland, 1916 , 1926), and grows in great abundance in the pine barrer's of New Jersey and elsewhere in the coastal plain sands.…”