52 MINNESOTA STUDIES IN PLANT SCIENCE 



coalita viridia vel purpurea ; petala 3-4 mm. longa purpurea lanceolata saepe 

 perangustata ; semina crassa ovata 1-1.3 mm. longa angulata carinata con- 

 spicue longitudinaliter tuberculata. 



Receptacle united to the ovary below the middle; carpels distended 

 below, strongly contracted above; styles conical, connivent; stigmas small; 

 follicles inflated below the middle, styles divergent or recurved ; gland broad, 

 elevated, convoluted or verrucose; filaments subulate, narrow, green, or 

 purple ; sepals 2-4 mm. long, cuneate or deltoid, reflexed, united at the base, 

 green or purple ; petals 3-4 mm. long, purple, lanceolate, often very narrow; 

 seeds thick, ovoid, 1-1.3 mm., angled, carinate, prominently, longitudinally 

 tuberculate. 



Leaves oblong, elliptic or elliptic-lanceolate, 5-20 cm., dull green to 

 brownish green above, paler yellowish-tinged beneath, glabrous, thin, laevi- 

 gate, obscurely or shallowly denticulate, tapering to short, broad, mem- 

 branous-margined, sheathing petiole-like bases. Scapes 45 cm. tall or less, 

 at first stout, later more slender, sometimes branching from below, densely 

 glandular-pubescent, the glands purple, thinner below but hairs longer, 

 whitish and mostly not gland-bearing. Inflorescence paniculate-cymose, 

 elongate, rather compact at first, opening with age, the branches ascending, 

 the upper much shortened. Bracts narrow lanceolate, the lower sometimes 

 f oliaceous. Haris uniseriate, of various lengths ; glands oblong. Perennial 

 from a stout, woody caudex. 



This new species has been long regarded as a purple-flowered form of 

 5". pennsylvanica L. but the color of the petals, the peculiarities of the car- 

 pels, gland, seeds, and habit are sufficiently distinct, it seems, to warrant 

 specific rank (Plate XII). 



Distribution. — Known only from two localities. 



Specimens examined: 



Vermont: Peacham. June 13, 1894, Ferdinand Blanchard (AIBG 751771, June 3, 

 1883, MBG 751772, August, 1892, MBG 751775). 



New Jersey: near Peapack, ex herbarium, R. C. Perry (AlBG 84563). 



Saxifraga Sierrae (Coville) Small, Bull. Torr. Bot. Club 23 :362. 

 1896. 



Saxifraga integrifolia Sierrae Coville, Proc. Biol. Soc, Wash. 7:78. 

 1892. 



Micranthes Sierrae (Coville) Heller, Muhlenbergia 2:52. 1905. 



Micranfhes arnoglossa Small, N. Am. Fl. 22:2:138. 1905. 



"Blades of the larger leaves 8-12 cm. long, oblong-lanceolate to elliptical-lanceolate, 

 conspicuously serrate-denticulate, from glabrous to sparingly clammy-hairy above and 

 beneath, thinner and more distinctly veined than in the type; petiole and margin of 

 the leaf toward the base ciliate with clammy hairs ; otherwise as the type form." 



