them ever grew as weeds on cultivated or otherwise disturbed 
land . 
In the appended list, are a few conspicuous native wild 
flowers, spring-, summer-, and autumn-flowering, grouped as are 
the specimens of them in the exhibit in Room 306. Nearby are 
specimens of some representative native forest trees which have 
played such an important part in making the American landscape 
what it is. None of the following lists is intended to be ex- 
haustive, but only to illustrate. 
Native Herbs 
Spring. — Jack-in-the-Pulpit, Arisaema triphyllum', Dog’s 
Tooth Violet, Eryihronium americanum ; Pink Lady’s Slipper. 
Cypripediutn acaule ; Arethusa, Arethusa bulbosa ; Hepatica, Hep - 
atica triloba ; Columbine, Aquilegia canadensis ; May Apple, Podo- 
phyllum peltatum', Bloodroot, Sanguinaria canadensis', Foam 
Flower, Tiarella cordifolia ; Trailing Arbutus, Epigaea repens. 
Summer. — Water Lily, Castalia odorata ; Virgin’s Bower, 
Clematis virginiana ; Pitcher Plant, Sarracenia purpurea', Burnet, 
Sanguisorba canadensis ; Prickly Pear, Opuntia vulgaris ; Swamp 
Loosestrife, Decodon verticillatus ; Butterfly Weed, Asclepias 
iuberosa', Oswego Tea, Monarda didynia'. False Indigo, Baptisia 
tinctoria ; Yellow Gerardia, Gerardia flava ; Purple Gerardia, 
Gerardia purpurea ; Cardinal Flower, Lobelia cardiualis. 
Autumn.— Marshmallow, Hibiscus Moscheutos', Fringed Gen- 
tian, Gentiana crinita ; Tall Sunflower, Helianthus giganteus', 
Culver’s Root, Veronica virgi?iica\ Joe-Pye Weed, Eupatorium 
purpureuni'. Salt Marsh Goldenrod, Solidago sempervirens ; New 
York Aster, Aster Novi- Belgii', Marsh Fleabane, Pluchea campho- 
rala; Blackeyed Susan, Rudbeckia hirta. 
Native Trees 
Black Walnut, Juglajis ?iigra\ Ironwood, Ostrya virginica ; 
Sweet Birch, Betula lenta ; Beech, Eagus graudifolia ; Chestnut, 
Castanea dentata ; Black Oak, Quercus velutina ; White Oak, Qtier- 
cus alba', Sweet Bay, Magnolia virginiana ; Tulip Tree, Lirio- 
dendroyi Tulipifera ; Sassafras, Sassafras variifolium ; Sweet Gum, 
Liquidambar Styraciflua ; Plane Tree, Platamis occidentalis ; Bass- 
wood, Tilia americana ; Sugar Maple, Acer saccharum ; Sour Gum, 
Nyssa sylvatica; Persimmon, Diospyros virginiana', Ash, Frax- 
i?ius america?ia. 
Among the 613 immigrant plants now known to grow here 
without cultivation, the overwhelming majority, like the people, 
come from Europe. Once landed, their Americanization has been 
extraordinary. So rapid was their capture of the new land, and 
so prolifically did they multiply, that the older races shook their 
heads at a speed of occupancy that boded ill. Neither party to 
this invasion knew then, as is abundantly evident now, that there 
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