98 I<SAFI<BTS. 



jecting almost horizontally, subcylindric, straight, obtuse. 

 Apetalous summer state with slender very leafy stems 3 to 4 

 inches high: leaves about 1/^ inches long, cordate-ovate, 

 abruptly somewhat pointed at summit, yet the very apex 

 almost obtuse, the margin lightly and rather minutely but 

 closely serrate rather than dentate, of a dull deep green, but 

 the venation conspicuous as being paler, all angles of stem and 

 petioles, as well as margins of foliage and stipules, delicately 

 scabro-puberulent : sepals lance-linear, acute, glabrous. 



Meadows in the vicinity of Leeds, North Dakota, the spec- 

 imens both early and late, communicated by Dr. J. Lunell, in 

 1909. 



ViotA CENTELLiFOLiA. I<ow and delicate, caulescent, but 

 leafy stem nearly obsolete, the leaves rather many and with 

 long petioles, but flower apparently one only to each stem ; 

 herbage light-green, the leaves membranaceous as in members 

 of the V. blanda group, their outline round-oval to oval, very 

 obtuse, truncate or subcordate at base, lightly crenate, deli- 

 cately hirtellous-roughened marginally and along the veins on 

 both faces, the petioles scaberulous along the angles : pedun- 

 cle surpassing the leaves, bracteolate above the middle, the 

 bractlets subulate ; sepals oblong-lanceolate and lanceolate, 

 very acute ; corolla Y^ inch long or more, apparently white, 

 spur shorter than the limb of its petal, straight, obtuse. 



Collected somewhere in the Blue Mountains, Oregon, 29 

 June, 1899, by Mr. C. L. Shear. Without its flowers this pale 

 thin-leaved violet would pass readily for acaulescent and a 

 member of the V. blanda group ; .but the flowers being indu- 

 bitably those of the V. canina alliance, a careful inspection 

 brings to light the short proper stem, and also the stipules of 

 the caulescent species. The cut of its seemingly radical leaves 

 is so nearly that of Hydrocotyle and its allies as to have sug- 

 gested the name I assign it. 



