88 



beneath, sparingly pubescent on both sides, especially on the 

 margins and veins beneath, entire or undulate-denticulate; 

 hypanthium-tube 18-20 mm. long, sparingly pubescent or gla- 

 bra te; calyx lance-elliptic in bud, glabrous, 12-18 mm. long, 

 acuminate, the free tips less than i mm. long; sepals lanceolate; 

 petals bright yellow, broadly obcordate, 18-20 mm. long; fila- 

 ments slender, y^ as long as the petals ; style nearly equaling the 

 petals; stigmas oblong, 3 mm. long; fruit (immature) elliptic, 

 abruptly contracted at the base, emarginate at the apex, about 

 I cm. long and half as broad. 



The species is closely related to K. glauca, which, however, is 

 more glaucous, usually entirely glabrous, with the free calyx- 

 tips 1.5-2 mm. long, broader leaves and larger fruit more tapering 

 at the base. Another related species is Kneiffia tetragona (Roth) 

 Pennell, which has narrower leaves, with denser and more silky 

 pubescence, smaller flowers, the petals being 12-15 mm. long, 

 and the capsule more tapering at the base. The present species 

 might be the same as the plant described by Spach (Hist. Nat. 

 Veg. 4: 375. 1835) as Kneiffia Fraseri, but it is not the original 

 Oenothera Fraseri Pursh which was brought from South Carolina 

 by Fraser and cultivated by him in England. The latter plant 

 was afterwards illustrated in Botanical Magazine on plate 1674. 

 The plate evidently represents Kneiffia glauca (Michx.) Spach. 



North Carolina: Craggy Mountains, Buncomb County, 

 July 21, 1925, P. A. Rydberg g455 (type in herb. N. Y. Bot. 

 Card.); also The Pinnacle, Black Mountains, 9434; Blowering 

 Rock, Small & Heller 262 ; Carvers Gap, Roan Mountain, Cannon 

 57- 



Stachys subcordata Rydb. sp. nov. Perennial with a creeping 

 rootstock; stems 8-10 dm. high, 4-angled, and sulcate, glabrous 

 except the sparingly hispidulous angles; petioles of the lower and 

 middle leaves 3-4 cm. long, sparingly hirsute with reflexed hairs; 

 leaf-blades 5-10 cm. long, ovate, rounded or subcordate at the 

 base, abruptly short-acuminate at the apex, sparingly hirsute on 

 both sides, the hairs on the lower sides confined to the veins, 

 finely serrate, slightly paler beneath ; calyx-tube finely pubescent, 

 3 mm. ,long and nearly as wide, pale, the teeth subulate with a 

 deltoid base, 2 mm. long; corolla pale-lilac, 12-13 rnm. long, the 

 lower lip as long as the tube, 3-lobed, the middle lobe rounded- 

 ovate, obtuse. 



The plant resembles S. cordata Riddell in habit and leaf-form, 

 but differs in the almost glabrous stem, the less pubescent leaf- 

 blades, which are scarcely cordate at the base and with sharper 



