46 LEAFLETS. 



been lent me by the late Dr. James Fletcher of Ottawa; but 

 that, not a subalpine plant, may have been the C. aurea of 

 Nelson. 



S.^^iCULA APiiFOLiA. Perennial by a stout fusiform root 

 1>^ to nearly 3 inches long : stem solitary, 1 foot high or more, 

 simple below, scarcely branched even above, the few branches 

 more like peduncles and the plant strict in habit, glabrous: 

 flowers rather showy and milky -white : ternate lowest leaves 

 long-petioled, their segments broad, obtuse, variously but none 

 sharply toothed : involucres of the flower clusters monophyl- 

 lous but parted into ovate lobes, the whole whitish and almost 

 scarious ; carpels tuberculate, but each tubercle bearing a stout 

 subulate rather short prickle hooked at tip. 



Columbia Falls, Montana, June, 1893, also 1894, R. S. Wil- 

 Hams. In every way, from root, and very parsley-like basal 

 leaves up to flower, entirely distinct from S. septentrionalis. 



Toxicodendron rufescens. Shrub never climbing or 

 forming aerial roots, firmly erect 1 to 1.5 m. high, copiously 

 and amply leafy, bearing small clusters of rather small fruits ; 

 mature twigs and branches dull reddish-brown, rather closely 

 lenticellate, glabrate, but the growing twigs, and even to the 

 end of the first season , rusty-puberulent : petioles 5 to 8 cm . long, 

 the compound blade about as long ; odd leaflet exactly though 

 quite broadly ovate, very acute or else abruptly acuminate, 

 commonly entire, occasionally with 2 or 3 coarse teeth on one 

 or both margins, 8 to 10 cm. long, 5 to 6 cm. wide below the 

 middle, its petiolule usually 2 cm. long, upper face vivid 

 green, glabrous, lower loosely hirsutulous on all veins and 

 veinlets ; lateral leaflets not much smaller than the terminal but 

 notably inequilateral, their petiolules very short, barely, or 

 hardly, 3 mm. long; panicles of fruit 5 cm. long or less, 

 the branches and main rachis all slender; drupelets small, 

 nearly spherical, a trifle elongated, glabrous and polished, 

 only obscurely striate. 



The original and only specimens of this new Toxicodeyidron 



are sent bv Mr. H. Walton Clarke, without mention of special 





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