Arabis Georgiana 



Biennial. Stems erect, 3-5 dm. tall, with few erect branches 

 mostly from the base, terete, purplish-tinged, minutely hirsute 

 below, glabrous or nearly so above : basal leaves oblanceolate, 

 coarsely toothed, 6—8 cm. long, forming a fiat rosette ; cauline 

 leaves sessile, half-clasping by a cordate or subsagittate base, 

 bright green on both surfaces, the lower surfaces and margins 

 sparsely pubescent with both simple and forked hairs ; the lower 

 leaves oblong-lanceolate, coarsely toothed about the middle, 

 about 5 cm. long, the upper much reduced and relatively nar- 

 rower : racemes loose, terminal, becoming 3—4 dm. long in fruit : 

 pedicels ascending (both in flower and fruit), becoming 1 cm. 

 long at maturity, only the lowest subtended by bracts : sepals 

 equal, ovate, acute, concave, narrowly scarious-margined, very 

 sparsely pubescent with simple and forked hairs towards the tips, 

 4 mm. long: petals oblanceolate, obtuse, spreading above, 9-10 

 mm. long by 1.5 mm. wide, pure white: longer stamens 7 mm. 

 long : style 1 mm. long, as thick as the ovary and stigma : pods 

 narrowly linear, flattened, 1.5 mm. wide and 6—j cm. long at 

 maturity, erect or nearly so, the valves 1 -nerved : seeds in a 

 single row, brown, narrowly wing-margined. 



This species seems most nearly related to A. patens Sull. and 

 A. hirsuta (L.) Scop, (or its American representative), but differs 

 from both in its longer pods. From the former it differs also in 

 the glabrous upper surface of the leaves and upper portion of the 

 stem, and in its erect pods ; and from the latter in its larger 

 flowers and evident style. 



Collected in shady woods at the top of the high bank of the 

 Chattahoochee River below Omaha, Stewart County, Georgia (in 

 the Cretaceous region), on the afternoon of July iS, 1901 (no. 

 1 091). Plants raised from seed in New York were in full flower 

 at the end of April, 1903. 



This seems to be the first Arabis reported trom the coastal 

 plain of the eastern United States, with the exception of A. 

 Virginica (L.) Trel. {A. Ludoviciana Meyer), which, however, 

 is only a weed in the coastal plain, and, besides, has been regarded 

 by many authors as belonging to another genus. 

 College Point. N. Y. 



