Dr. F. Kurtz, in an Arctic Expedition in 1882, collected the large yellow species, _Cypripedium hirsutum_[22] of the Atlantic Region, as well as _Cypripedium passerinum_, which is endemic only to the Northern Pacific Region. _Cypripedium hirsutum_ also extends from New England westward much farther than the pink species, _Cypripedium acaule_. The dwarf yellow, _Cypripedium parviflorum_, closely follows the larger yellow species both southward and westward, but according to the stations reported to the author for the continent, it cannot be said to have the broader range of the two species. [Illustration: =The Small Yellow Fragrant Moccasin-Flower.= (_Cypripedium parviflorum._) The only really fragrant _Cypripedium_ of the Atlantic region, closely allied with _Cypripedium Montanum_—the Fragrant White Lady’s Slipper of the Pacific slope. The plate shows the undulating sepals and petals as well as their rich brown-pink coloring. The two lower sepals are imperfectly united and are bifid at the apex. This species is almost identical with the European species _Cypripedium calceolus_,—the first _Cypripedium_ described by Linnæus in 1740-1753.] The Dwarf White Moccasin-Flower (_Cypripedium candidum_) may also be counted with Ram’s-Head Cypripedium as one of the rare species of the Northern Atlantic Region. It is seldom found in the New England States. In the range reported to the author for this species, there is but one New England station. This has been given by A. W. Driggs of East Hartford, Connecticut.[23] This orchid belongs more especially to the damp swells of the prairie. It is very similar to the Dwarf Yellow Cypripedium, except in color, and like it produces a faint fragrance. This dainty white shoe is often no larger than the tiny Ram’s-Head flower, the plant being about six to ten inches high, bearing small waxen shoes, the shape of the blossoms of _Cypripedium parviflorum_. I have often received descriptions from country lads, supposedly of these White Moccasin-Flowers, only to find that they were either _albinos_, or bleached out and pale specimens of the gorgeous colored _Cypripedium reginæ_. Often the latter seem pure white to the hurried observer in the swamps, for the albino or white variety rarely occurs. I found one plant, however, this season bearing two blossoms, the first I ever saw, and I removed the plant to watch it in my garden.