31 8 Mnhlenberg-ia, Vohinie 2 



Stacliy.s qiiercetoruui 



Perennial from rootstocks: stems about 6 dm. high, rather 

 weak but erect or ascending, light green, pubescent on the an- 

 gles with short spreading (or below somewhat retrorse) clear 

 hairs, simple below, bearing one or two pairs of slender branches 

 above: leaves remote, shorter than the internodes, large and 

 thin, bright green, broadly ovate, the larger middle ones about 

 8 cm. long exclusive of the petiole of 2 cm., 5 cm. wide, coarsely 

 crenate, rounded at the apex, the base somewhat cordate or 

 truncate, sparingly appressed pubescent with short clear hairs 

 above and on the veins beneath, the margins somewhat ciliate, 

 veins rather prominent; lower leaves smaller, the petiole equal- 

 ing or_ exceeding tlie blade; the upper leaves also smaller, the 

 petioles short; the first pair of floral leaves oblong, nearly ses- 

 sile, a little longer than the flowers, the others equaling or 

 shorter than the calyx, more or less obovate in shape, awn 

 pointed, the few teeth sharp instead of rounded: whorls rather 

 remote, the lov^'er about 2 cm. apart: calyx 5 or 6 mm. long, 

 moderately campanulate, lo-nerved, pilose, but not densely so, 

 the lobes less than 2 mm. long, triangular, prominently awn 

 pointed: corollas pinkish mottled with rose-purple, about 14 mm, 

 long, pubescent externally especially the upper lip, the tube ex- 

 serted 3 or 4 mm. from the calyx, 2 mm. across the base for a 

 space of 2 mm. then enlarged to 3 mm. by a sac or spur-like pro- 

 jection on the lower side, the ring of hairs on the inside extend- 

 ing obliquely upward from this; upper lip concave, about 2 mm. 

 across, the apex curved slightly backward; lower lip about 6 mm. 

 wide, the terminal lobe broadly rounded its edges a little turned 

 up except at base, the lateral lobes somewhat downcurved, the 

 whole lip round ovate in outline when spread out, the sinus be- 

 tween the lobes open and rounded, i mm. wide at base 2 mm. at 

 the top: stamens 3 mm. shorter than the upper lip, densely woolly 

 in the lower half: style extending to the ends of the filaments, 

 2-lobed, the lobes moderately divergent. 



