SKETCH OF THE FLORA OF ALASKA. 



LABIATE. 



453 



Dracoceplialum paviflonira, L., Fort Youkon, Antoine Houle. 



Brunella vulgaris, L., Sitka and Ounalashka. 



GaleopsisTetrahitl.; Sitka, Kellogg. Introduced, most likely. It is, however, 

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

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

 agencies. 



PLUMBAGINACEiE. 



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



PLANTAGINACE^. 



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



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



P. maritima, L., Sitka and Ounalashka. 



P. media, L., Russian America, fide J. G. Gmelin. What part ? 



POLTGONACE^. 



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

 Kotzebue sound, Cape Lisburno and Arctic coast. 



Rumex salicifolius, Weinm., Sitka. 



R. Acetosa, L., Kotzebue sound. 



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

 wright inlet. 



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

 coast. 



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



P. polymorphum, Ledeb., var. lapathifoliura, 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 

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

 bue sound. It has an esserted broadly winged achenium. The lower leaves,- 

 however, are not so reduced as in P. tripterocarpum, the description of which 1 

 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. tripterocarpum. — 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, longitudiualiter striate glabro vel ad nodos deorsumque breviter retrorso 

 pubescente ; foliis (inferioribus ad ochream reductis) patentibus lineari-lanceolatis acumi- 

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

 ciliatis undulatisque inferioribus supra basim tertia parte superioribus imaa basi insertis ; 

 ochreis laxis nervoso— striatis rufis glabris vel basi pubescentibus ; panicula angusta foliata ; 

 bracteis latis 1-2 flores ; pedicellis exsertis florum aaquautibus supra medium articulatis 

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

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

 capitatis ; semine (immature) 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 inflated leafless sheaths. 

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

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

 smooth. The points, however, in which they seem to difler 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 form P. polymor- 

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

 found on the American side.) 



