Mackenzie and Bush — Neio Plants from Missouri. 85 



stems, petioles, and peduncles strongly viscid and clammy 

 pubescent, the hairs conspicuously unequal in length, leaves 

 orbicular-ovate to ovate-oblong, 1.5-7 cm, long, 1.5-4.5 cm. 

 wide, from rounded and a little, to strongly oblique at base, 

 acute at apex, and from nearly entire to strongly undulate- 

 dentate, more or less viscid-pubescent on both sides, especially 

 on the veins and margin; petioles 8-60 mm. long, usually 

 somewhat shorter than the leaves ; flowers axillary on re- 

 flexed peduncles 2-8 mm. long ; calyx strongly glandular, 4 

 mm. long, the lobes triangular-acute, the length of the tube; 

 corolla twice the length of the calyx, 4-8 mm., broad, pure 

 orange-yellow, without a dark eye, pubescent outside and 

 slightly so within ; stamens greenish-yellow, and shorter than 

 the glabrous filaments ; mature fruiting pedicels 12 mm. long; 

 mature fruiting calyx 20-28 mm. long, not strongly angled, 

 merely acute, reticulated, viscid-pubescent, especially on the 

 veins, rounded or somewhat sunken at base; berry globular, 

 very viscid, 8-10 mm. in diameter. 



Type locality: Red Bridge, Jackson County, Missouri ; col- 

 lected by K. K. Mackenzie^ 485, Sept. 18, 1901 ; type in 

 Herb. K. K. Mackenzie. 



This species is common in open rocky woods around Kan- 

 sas City, and there can be scarcely any doubt that it is native. 

 Prof. Gray and Dr. Engelmann called it a form of P. puhes- 

 cens L. Prof. Watson named it P. minima Roxb. (P. 

 Lagascae R. & S.), and this latter name is also taken up by 

 Dr. Rydberg. However, that species lacks the viscid pubes- 

 cence so strongly developed in the Missouri plant, which 

 makes it so disagreeable to the touch when fresh. This 

 characteristic, in addition to the pure yellow corolla, easily 

 distinguishes it from all our other species. 



Spbcimeks examined. — Missouri: Type specimens as cited under type 

 locality; Swope Park, Jackson County, Mackenzie, Aug. 26, 1896; Brush 

 Creek, Jackson County, Mackenzie, Sept. 16, 1895; Kansas City, Mackenzie, 

 360, June 14,1895; Jackson County, Bush, 1023, Aug. 6,1888; Monteer, 

 Shannon County, Bush, Oct. 21,1893; Eagle Rock, Barry County, Bush, 

 162, June 28, 1897; Swan, Taney County, B?isft, 173, June 12, 1898. — Kan- 

 sas: Rosedale, Wyandotte County, Mackenzie, July 12, 1896; Manhattan, 

 Riley County, Kellerman, Aug. 28, 1888. 



