SKETCH OF THE FLORA OF ALASKA. 453 



LABIATE. 



Dracoccplialum paviflorum, L., Fort Youkon, Anto'mc Iloule. 



Briinella vulgaris, L., Sitka and Ounalashka. 



Galcopsis Tetrahit, Sitka, Kellogg. Introduced, most likely. It is, however, 

 found in Kaiatschatka, but not being known to exist elsewhere between these 

 two points we can hardly account for its presence in Sitka by strictly natural 

 agencies. 



rLTJMBAGINACEJE. 



Statice Armeria, L., Ounalashka, Kotzebue sound, and northern coast. 



PLANTAGINACE^. 



Plantago major, L., Sitka, banks of Youkon river, Dall. 



P. raacrocarpa, Cham, et Schlecht., Sitka and Ounalashka. 



P. maritima, L., Sitka and Ounalashka. 



P. media, L., Russian America, ,/?(/•(? J. G. Gmclin. What part? 



POLTGONACE^. 



Oxyria reniformis, Ilook., islands of Sitka, Ounalashka and St. Lawrence, 

 Kotzebue sound. Cape Lisburne and Arctic coast. 



Rumex salicifolius, Weinm., Sitka. 



R. Acetosii, L., Kotzebue sound. 



R. domesticus, Hartm., Sitka, Ounalashka, and Kotzebue sound to Wain- 

 wright inlet. 



Polygonum Bistorta, L., Kotzebue sound to Point Barrow and northern 

 coast. 



P. viviparum, L., Sitka, Ounalashka, and along the coast generally. 



P. polymorphura, Ledeb., var. lapathifolium, Ledeb., Kotzebue sound. P. 

 alpinum. Hook, et Arnott in Beechey's voyage, fide Ledebour, Kotzebue sound. 

 Professor Gray informs me that one of the doubtful forms I have sent him 

 iVom Mr. Dall's Fort Youkon collection is exactly P. alpinum as found at Kotze- 

 bue sound. I have, however, some older fruit, and am led to think it may 

 )'et prove P. tripterocarpum, Gray. It has the exserted broadly winged ache- 

 uium. The lower leaves, however, are not so reduced as in P. tripterocarpum, 

 the description of which I append in a foot-note. I have, however, some 

 older fruit of it than he had, and am led to think it may yet prove P. triptero- 

 carpum. — Gray. The description of which I insert below.* 



P. aviculare, L., Sitka. 



* " Polygonum tripterocarpum, Gray, n. sp., caule erecto vel assurgente simplici vel 

 parce ramoso, longitudinaliter striato glabro vel ad nodos deorsumque breviter retror.so 

 pubescente ; foliis (inferioribus ad ochreain reductis) patentibus lineari-lanceolatis aciiuii- 

 natis basi angustatis breviter petiolatis glabris vel subtus ad nervum puberulis margiue 

 ciliatis undulatisque inferioribus supra basim tevtia parte superioribus imae basi insertis ; 

 ochreis laxis nervoso — striatis rufis glabris vel basi pubescentibus ; panieula augusta foliata; 

 bracteis latis l-'i flores ; pedicellis exsertis floruin aequaiitibus supra medium articulatls 

 sepalis ovalibus vel obovatis obtusis ; staminibus ovarii dimidium scquautibus ; achenio 

 exserto calyce r5-4 — plo longiore obovato late trialato stylis 3 recurvatis coronato stigmatibus 

 capitatis ; semine (immaturo) valde stipitato." 



Coal bay, J. Small ; Arakamtchetchene island, C. Wright. The specimens from two or 

 three rather remote localities are 8-15 inches high, erect or slightly assurgent at the base ; 

 the short lower joints two or three times as long as the rather intlated leafless sheaths. 

 Some of the specimens are clothed at and below the nodes of the middle of the stem with a 

 more or less dense retrorse pubescence, while the lower and upper parts are nearly or quite 

 smooth. The points, however, in which they seem to differ most from P. polymorphum, 

 P. divaricatum, and other allied species, are in their conspicuously exserted and broadly 

 winged achenium as well as in their rather strict, nearly unbranched habit." Professor 

 Gray's MSS. (Mr. Dall found the same species at Plover bay, and if the forui P. polymor- 

 phum var. lapathifolium does not prove P. tripterocarpum it is likely the latter may yet be 

 found on the American side.) 



