STEELE NEW PLANTS FROM EASTERN UNITED STATES. 365 



ochroleuca, the achenes seeming somewhat more oblique. Its leaves are none of (hem 

 bo large aa is usual in ochroleuca. Granting that these represent a distinct species, 

 ovata, the present species is still left standing quite apart. Its slender, woody stems, 

 short internodes, and numerous branches and numerous small leaves distinguish it 

 from either species. The fruit greatly resembles that of ochroleuca except that the 

 tails of the achenes, though of the same color, are considerably shorter, the heads 

 therefore smaller in outline. 



Arabis; serotina Steele, sp. nov. 



Plan", 40 to 100 cm. high, glabrous throughout; stem slender, in strong specimens 

 fairly stout below, never thick and soft, rarely collapsing in pressing, mostly purplish 

 and minutely pale-flecked, the summit and the branches green, much branched even 

 in small individuals, the branches long and slender, more spreading than ascending, 

 rarely subdivided; basal rosette wanting at flowering time, a dense lateral tuft of 

 small spatulate leaves with a dentate margin shown in one specimen; cauline leaves 

 linear-oblanceolate or somewhat spatulate, entire or repand-denticulate, narrowly 

 inserted (not clasping nor auriculate), the larger 5 to 7 cm. and perhaps 10 cm. long, 

 the lower gone at flowering time; leaves of the inflorescence similar but smaller, mostly 

 on the main axis, one to rarely three small ones on the stronger branches, the plant 

 leafless with the ripe fruit; flowers in loose racemes, often occupying less than half the 

 length of the branches; pedicels at flowering time 3 to 5 mm., in fruit 8 to 10 mm. long, 

 often bent near the insertion, otherwise straight or somewhat curved; whole length of 

 flower including stamens 4 to 5 mm. ; sepals barely over 2 mm. long, the sides slightly 

 excavate below, the blade-like upper segment elliptical-oblong, very obtuse; petalB 

 exceeding the sepals by 0.5 mm. or more; stamens decidedly exserted; silicles droop- 

 ing either by the position of the pedicel or very often by their own curvature, when 

 mature mostly 6 to 7 cm. long, 1.5 mm. wide; seeds a little larger and more broadly 

 winged than in A. laevigata, including wing 1.5 to fully 2 mm. long, the radicle 

 frequently distinguishable under a lens the whole length of one side and across one end. 



Type in the IT. S. National Herbarium, no. 494495, collected at Millboro, Bath County, 

 Virginia, altitude 490 meters, August 21, 1907, by E. S. Steele. On lightly wooded 

 slopes of crumbling shale. The exact locality is at the west end of the railroad tunnel, 

 near Millboro station. Several other specimens of the same date were secured and 

 others in a more advanced stage had been secured in September of the previous year. 



This plant was at first taken to be Arabis laevigata burkei Porter, which it resembles 

 in several particulars of the description, but Doctor Rose, who kindly compared a 

 specimen with Porter's material at the New York Botanical Garden, thinks the two 

 are not the same. In any case, it is out of the question to refer this in any way to A. 

 laevigata. Even if we disregard the fact that it is in perfectly normal bloom the middle 

 of August while A. laevigata blossoms in April and May, the differences are fully of 

 specific: worth. The most striking are in the Bmall flowers of the present plant, its 

 narrow nonsagittate leaves, its more slender and woody stems, and its numerous 

 spreading branches. 



Euphorbia falcata L. 



An abundant growth of this plant was found at the west end of the railroad tunnel at 

 Millboro, Virginia, where so many native novelties occur. A few specimens were also 

 met on the railroad near Mount Elliott Springs, Augusta County. It ia a plant of the 

 style o:i E. peplus. The determination was kindly verified at the Gray Herbarium. 



Oenothera canovirens Steele, sp. nov. 



Stem 1 to 1.5 meters high, rather stout, woody, usually branching at the very base 

 or somewhat above and also at the summit, the branches ascending, the bark down- 

 wardly splitting and scaling off, the surface clad with a dense cinereous puberulence 

 interspersed with long, more or less flexuous, gray hairs, none tuberculate; leaves 

 numerous and crowded, excurved-ascending, below 9 to 10 cm. long, at the base of 



