THE MID-JULY FLOWERS. 2I1 
necessary labor involved in the accurate discrimination 
and proper codrdination of the 10,000 or 12,000 species 
to which the number has been raised, a labor which, in 
part, accounts for the slowness of the work. The names 
of Michaux, Pursh and Gray are found in the following 
list. 
July rz. 351 Rhus glabra, L. Smooth Sumach. 
Urtica gracilis, Ait. Nettle. 
aes Ophioglossum vulgatum, L. Adder’s-Tongue. 
Nympheea odorata, Ait. ~ Water-Lily. 
Gaultheria procumbens, L. Checkerberry. 
Castanea sativa, Mill., var. Americana, 
Michx. Chestnut. 
Microstylis ophioglossoides, Nutt. Adder’s- 
Mouth. 
Aletris farinosa, L. Colic-root. 
Aralia hispida, Vent. Wild Elder. 
360 Carex trisperma, Dewey Sedge. 
Polygala polygama, Walt. Polygala. 
“ 14. Asclepias obtusifolia, Michx. Milkweed. 
Melilotus alba, Lam. White Melilot. 
Polygala sanguinea, L. Polygala. 
Nepeta Cataria, L. Catnip. 
Chenopodium album, L. Pigweed. 
Lactuca Canadensis, L. Wild Lettuce. 
cies toe Asclepias tuberosa, L. Butterfly-weed. 
Pontederia cordata, L. Pickerel-weed. 
370 Eriophorum cyperinum, L. Cotton Grass. 
