86 



irregular black glands; sepals lanceolate, obtuse, petals oval, 

 about 8 mm. long, 4 mm. wide, yellow, the half exposed to the 

 light with conspicuous, oblong, almost black gland-dots, the 

 other half, which in bud is covered by the adjacent petal, usually 

 devoid of gland-dots except along the margin, which is set with 

 numerous minute tooth-like glands; stamens many; filaments 

 nearly equaling the petals and longer than the styles; styles 3, 

 about equaling the ovary, but in fruit shorter than the capsule, 

 capsule broadly ovoid, 3-lobed, 7-8 mm. long. 



This species has been confused with H. graveolens Buckley and 

 has the same habit and leaf-form, differing mostly in the smaller 

 flowers, shorter stamens and styles and the more strongly 

 developed oblong gland-streaks on the petals. In H. graveolens 

 the petals are at least 12 mm. long, the stamens and styles still 

 longer. I thought at first that H. Mitchellianum was the original 

 H. graveolens, as it seemed to fit Buckley's description better, 

 and that Dr. Gray had figured the wrong species. I wrote to 

 Philadelphia for the loan of Buckley's type specimen, but it is 

 not found in the Academy herbarium. In the drawings of 

 the two species I noticed the difference in the length of the 

 styles. It is only the larger-flowered plant that has the styles 

 "nearly twice as long as the carpels," a character given in the 

 original. The simpler habit with more congested inflorescence 

 distinguishes it from H. punctatum, H. pseudoniaculatum and 

 H. perforatum. In these three species the calyx is densely 

 sprinkled with round oil-dots and the sepals decidedly acute. 

 H. punctatum has much smaller petals; H. pseudoniaculatum 

 has lanceolate leaves; and H. perforatum has narrowly oblong 

 leaves. The species is dedicated to the venerable scientist who 

 lost his life and is buried on the mountain which bears his name. 



North Carolixa: Mt. Mitchell, July 15-16, 1925, P. A. 

 Rydberg Q402 (herb. N. Y. Bot. Gard.), Q40J; Mt. Pisgah, 9478; 

 Mitchell County, Ashe in 1895; Roan Mountain, Cannon 116; 

 Dr. &" Mrs. Britton in 1885, Grandfather Mountain, Huger in 

 1896; Small & Heller in 1891 ; Blowing Rock, Small &• Heller in 

 1891 ; Heller 1018. 



</ Kneifl&a latifolia Rydb. n. sp. Biennial or short-lived peren- 

 nial; stem mostly simple, 5-6 dm. high, often purplish or brown- 

 ish below, sparingly pubescent with ascending, curved hairs; 

 basal leaves rosulate, soon withering, oblanceolate, 2-3 cm. long; 

 stem-leaves elliptic-lanceolate or ovate-lanceolate, 5-7 cm. long, 

 1.5-2.5 cm. wide, acute at each end, bright-green above, paler 



