CONTRIBUTIONS TO THE NATURAL HISTORY OF ALASKA. 77 



NAIDACEiE. 



Zostera marina, L., Unalasbka. 



Potamogeton natans, L., Sitka. 



P. rufescens, Besser., Unalashaka. 



Triglochin maritimum, L., Sitka. 

 T. palnstre, L., Unalaslika. 



JCJNCAGLNACEiE. 



ORCHLDACEiE. 



Corallorhiza mertensiana, Lindl., Sitka. 



C. innata, R. Br., Kotzebue Sound, Unalaslika. 



Microstylis diphyllos, Lindl., Unalaslika. 



Calypso borealis, Salisb., Sitka. 



Orchis latifolia, L., Unalshka. 



Platanthera obtusata, Lindl., Kotzebue Sound. 



P. schischmareflana, Lindl., Unalasbka. 



P. Koenigii, Lindl., Sitka, Unalasbka. 



P. dilatata, Lindl., Sitka, Unalasbka. 



Peristylus cJiorisianus, Lindl., Unalasbka. 



P. bracteatus, Lindl., Unalasbka. 



Listera cordata, R. Br., Sitka, Unalasbka. 



L. eschscholtziana, Cham., Unalsbka. 



Spiranthes romawsoffiana, Cham., Unalasbka. 



Cypripediiim guttatum, Swartz, Unalasbka. (Abundant on tbe drier bill-sides at Unalasbka; 

 common on tbe higher parts of tbe valleys at Attu ; not found on tbe intermediate islands. Flow- 

 ers greenisb-wbite, with dots of brown or rusty color. T.) 



IRIDACE-SI. 



Sisyrinchinm bermudiana, L., var. anceps. Sitka. 



Iris sibirica, L., Norton and Kotzebue Sounds. (A species of Iris is quite plentiful on all tbe 

 Aleutian Islands. I am not aware to wbicb species it sbould be referred. T.) 



SMILACEiE. 



Streptopus amplexifolius, D C. Sitka and Unlalasbka. (Rare at Saint Michael's. Among tbe 

 Aleutian Islands it grows along tbe deeper ravines, among tbe rank vegetation, attaining a beigbt 

 of over tbree feet. T.) 



8. roseus, Michx., Sitka. 



Smilacina bifolia, Ker., Sitka. Dr. Rotbrock adds: "Tbe large-leaved form appears most 

 common by far, if we may judge from the proportion of it in tbe collections made at Sitka." 



(Smilacina liplia, var. occidentalis. This insignificant plant was obtained only at Attu Island. 

 It is quite rare, growing on tbe level wet tops of the lower hills. T.) 



(Uvularia am/plexifolia, L., Throughout the mainland coast south of the Bering Strait; very 

 plentiful on all the Aleutian Islands ; grows along the bases of ravines and among other rank 

 vegetation. Fruit bright red, edible ; flowers greenish. T.) 



(Maianthemum bifolium, D C. Not common ; throughout the Aleutian Islands. T.) 



LILIACE-Ei. 



Lloydia serotina, Richenb., Saint Lawrence Island, Unalasbka, Cape Lisburne, Kotzebue Sound. 

 (Grows in clusters on ledges of highest bluffs. Flowers white ; obtained only at Unalasbka ; not 

 observed elsewhere. T.) 



Fritillaria Icamtscliatcensis, Fisch., Sitka, Unalasbka, Cape Prince of Wales. (Common at 

 Saint Michael's, there attaining a height of only a few inches, with bulb proportionately small. 



