. Report of the Canadian Arctic Expedition 1913-18. Scientific expeditions. 54 B Canadian Arctic Expedition, 1913-18 Pleurogyne Esch. While p. rotata Griseb. has been recorded from quite a nuraber of stations on this continent, viz.: Labrador and Hudson bay to the high-northwest coast, Kotzebue sound, etc., and the Rocky mountains south to lat. 39 , P. canntluaca Griseb. has not with certainty been observed here; Gray and Macoun have credited a variety fusilla Gray to Labrador and the alpme region of the White mountains of New Hampshire (Pursh), but according to Robinson and Fernald,^ the Amer
. Report of the Canadian Arctic Expedition 1913-18. Scientific expeditions. 54 B Canadian Arctic Expedition, 1913-18 Pleurogyne Esch. While p. rotata Griseb. has been recorded from quite a nuraber of stations on this continent, viz.: Labrador and Hudson bay to the high-northwest coast, Kotzebue sound, etc., and the Rocky mountains south to lat. 39 , P. canntluaca Griseb. has not with certainty been observed here; Gray and Macoun have credited a variety fusilla Gray to Labrador and the alpme region of the White mountains of New Hampshire (Pursh), but according to Robinson and Fernald,^ the American P. rotata includes P. carinthiaca var. pusilla, which by Macoun has been reported from Anticosti and some few stations in Quebec. Meanwhile both species were collected by the Canadian arctic expedition, and since .P. carinthiaca has been confused with the other, some brief notes on their distinctive characters may be appropriate. Both were described by Grisebach, viz.: "P. rotata, foliis lanceolatis linearibusque, sepalis lanceolato-linearibus corollam aequantibus, ovario acuto, seminibus suturalibus," and "P. carinthiaca, folus ovalibus oblongisque, sepahs ovatis corolla duplo brevioribus, ovario obtuso, seminibus prope suturam ; A specimen from Bernard harbour of P. carinthiaca has been drawn on Plate XI, fig. 3 (Can. Arct. Exp., Vol. 5, pt. A),. 10 Figure 0. Pleurogyne carinthiaca Griseb.; a flower; one and two-thirds times natural size; specimen from Almagell, Valais, Switzerland. 2. Stem-leaf of same specimen; one and two-thirds times natiu'al size. 3. Same species; specimen from mouth of Mackenzie river; natural size. 4. Same species; a corolla-lobe; one and two-thirds times natural size; specimen from Bernard harbour. 5. Calyx-lobe of same specimen; one and two-thirds times natural size. 6. Pleu- rogyne rotata Griseb.; a flower; one and two-thirds times natural size; specimen from Bath- urst inlet. 7. Stem-leaf of same specimen; one and
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