27 



or acuminate at the apex and contracted below the middle into a 

 narrow basal portion, sometimes, especially in the upper leaves, 

 the extreme base again slightly dilated and connate, but never 

 broadly perfoliate, green and thinly appressed-hirsutulous above, 

 scarcely paler beneath, except in age, and minutely soft-pubes- 

 cent : corolla dull purplish-red, 14-20 mm. long, the outer sur- 

 face glandular-puberulent, strongly gibbous-saccate at base, 

 more distinctly two-lipped and dilated above and with larger 

 more spreading lobes than in T. perfoliatum, the stamens rel- 

 atively much shorter and the style less exserted ; calyx-lobes 

 linear, obtuse, the largest becoming 18 mm. long and much sur- 

 passing the corolla ; fruit 2-6 in each pair of axils, larger and 

 more obovoid-oblong than in T. perfoliatum, pubescent, becom- 

 ing orange to bright orange-red. 



From Quebec to Minnesota, Massachusetts, North Carolina, 

 Kentucky and Iowa, growing in rich soil in hilly or rocky 

 woods. Comes into flower about New York from May 9 to 20, 

 two or three weeks earlier than T. perfoliatum. The fruit 

 ripens in late summer and sometimes persists well into November. 



The type from Van Cortlandt Park, New York City, is de- 

 posited in the herbarium of the New York Botanical Garden. 



This plant, although greatly resembling T. perfoliatum, has 

 many points of difference. Perhaps the most obvious of these re- 

 sults from the shorter internodes of T. perfoliatum and its broadly 

 perfoliate leaves which sometimes measure as much as 5-7 cm. 

 across their united bases. T. perfoliatum is also mostly stouter 

 and more leafy, the leaves thicker, and more rugose-veiny and 

 paler beneath and more densely soft-pubescent. A closer com- 

 parison reveals interesting differences between the flowers of the 

 two species. Not only is the corolla of T. perfoliatum often 

 duller in color and decidedly greenish about its lower half, but 

 it is markedly different in shape and in relatively longer stamens 

 and more exserted style ; the corolla-tube is nearly cylindric and 

 scarcely at all two-lipped with very short erect lobes scarcely, if 

 at all, surpassing the anthers, in definite contrast with that of T. 

 aurantiacum, which is decidedly two-lipped and upwardly dilated 

 with much larger more or less spreading lobes much surpassing 

 the included stamens. Furthermore, the calyx segments of 

 Triosteum perfoliatum are ordinarily much shorter and less foli- 



