Page:An introduction to physiological and systematical botany (1st edition).djvu/109

Rh blossoms, exhale, in the evening chiefly, a most powerful lemon-like scent, as ''Epidendrum ensifolium, Sm. Spicil. t. 24, and Chloranthus inconspicuus, Phil. Trans, for'' 1787. t. 14, great favourites of the Chinese, who seem peculiarly fond of this scent. There are other instances of odorous and aromatic secretions, similar among themselves, produced by very different plants, as Camphor. The sweet smell of new hay is found not only in ''Anthoxanthum odoratum, Engl. Bot. t. 647, and some other grasses, but in Woodruff or Asperula odorata, t. 755, Melilot or Trifolium officinale, t. 1340, and all the varieties, improperly deemed species, of Orchis militaris'',