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Plants from Western North America 581 



west America," Mr. Howell takes for this plant the name R. Una- 

 laschensis Bess., published in 1842, founded upon specimens from 

 Alaska, but cites Hooker's name as a synonym. I have seen 

 no Alaskan specimens, and there is a possibility that the eastern 

 and western forms may prove distinct. 



Our specimens were collected near Montesano, Washington, 

 June 11, 1898. The plant is plentiful in wet places, the decum- 

 bent and creeping stems often two feet long, the lower leaves over 

 a half inch in width. 



Opulaster pauciflorus (Nutt.) 



Spiraea pauciflora Nutt. ; T. & G., Fl. N. A. 1 : 414. 1840. 



Spiraea opulifoliay pauciflora T. & G., Fl. N. A. 1 : 414. 1840. 



Neillia malvacea Greene, Pittonia, 2: 30. 1889. 



Opulaster mahaceus Kuntze, Rev. Gen. PI. 949. 1891. 



Nuttall's type, which is in the herbarium of Columbia Univer- 

 sity, was collected in "glades of the Blue Mts., Columbia." It is 

 abundant on the Craig mountain plateau, Idaho, which is sepa- 

 rated from the Blue mountains by the Snake river, also on the Pa- 

 louse hills on the north side of the Clearwater, and across the 

 country along the mountains to Lake Pend d' Oreille, where Pro- 

 fessor Greene collected his type of Neillia malvacea. It is ap- 

 parently the only Opulaster in that region, as its near relative 0- 

 monogynus has not been detected outside of the Rocky Moun- 

 tains, and O. capitatus appears to be restricted to the western side 



of the Cascades. 



Kalmia microphylla (Hook.) 



Kalmia glauca y microphylla Hook. Fl. Bor. Am. 2:41. 1834. 



The original of this was collected in "swamps in the 

 Rocky Mountains, Drummond," and is described as having "foliis 

 vix semipollicaribus subovalibus." I have seen a number of spec- 

 imens of this from the Rocky Mountains, and consider them en- 

 tirely distinct from Kalmia glauca, with its narrower, longer and 

 thicker leaves. 



Stachys pub ens (A. Gray) 

 Stackys ciliata, var. pubens A. Gray, Syn. Fl. N. A. 2 1 : 388. 

 18/8. 



This is described as having " flowers commonly rather smaller 



