USEFUL PLANTS OF ALASKA.	589
LIBELLULINA.
Cordulia, like C. cena. Yukon River.
Cordulia Shurtl Scudder. June, near Fort Yukon, common. Cordulia eremita Scudder. June, near Fort Yukon. Diplax intacta Hagen. June 25, near Fort Yukon.
PHRYGANINA.
`Limnophilus vastus Hagen. Kenai, Cook's Inlet. *Limnophilus perjurus Hagen. Kenai, Cook's Inlet. Linznophilus ? n. s. Nulato, May I2th, one specimen. Cryptothrix insularis Hagen, n. s. Nulato.
LIST OF USEFUL PLANTS INDIGENOUS IN THE TERRI-
TORY OF ALASKA.
RANUNCULACEEE.
Hepatica triloba Chaix. Sitka.
Coptis trifolia Sal.	"
C. asplenifolia Sal.	"
Aconitum Napellus, var. delphinifolium. Sitka, northward.

CRUCIFERIE.
Nasturtium palustre D. C. Yukon and Unalashka. Cochlearia fenestrata R. Br. Norton Sound, north. C. ohlon;ifolia D. C.	,‘	46	" C. anglica L. Kotzebue Sound.
LINACEIE.
Linum perenne L. Fort Yukon.
LEGUMINOS/E.
Trifolium repots L. Sitka (introduced). Lathyrus maritimus Big. Sitka and northward. Hedysarum Mackenzii Rich. Yukon.
ROSACEIE.
Rubus spectabzlzs Pursh. Sitka, Kadiak. R. arcticus L. Kotzebue Sound.
* See note on preceding page.