﻿Small: Botany of Southeastern United States 613 



above the leaves, but the pubescence is spreading. The pubes- 

 cence is similar to that of Oxalis rccurva but much more delicate, 

 the flowers too resemble those of that species in aspect, but the 

 styles are erect. The most peculiar character is the pubescent and 

 strongly ciliate petals. I do not know that this character exists in 

 any of our many yellow-flowered species. Miss Sadie F. Price, 

 for whom this Oxalis is named, has furnished me with copious 

 material from near Bowling Green where she has observed this 

 and other interesting species in the field for several years. 



• 



Physostegia Digitalis. 



Perennial, glabrous below the inflorescence. Stems erect, 7 



12 



dm. tall, stout, sharply 4-angled : leaves opposite ; blades leathery 

 oblong to elliptic-oblong, 10-22 cm. long, acute or acutish at the 

 apex, undulate or repand-serrate above the middle, sessile and 

 partly clasping at the base : racemes simple or branched, finely 

 pubescent : bracts lanceolate or ovate-lanceolate, 4-6 mm. long : 

 pedicels very short: calices 8-10 mm. long; tubes turbinate or 

 cylindric-turbinate ; segments lanceolate, acuminate, about one 

 half as long as the tube : corollas barely puberulent along the 

 back, 2-2.5 cm. lon S '> tube rathcr abruptly dilated into the throat ; 

 lower lip spreading, lobes oblong, middle one emarginate, about 

 twice as large as the lateral ones ; upper lip slightly undulate. 



In low grounds, Louisiana. Summer and fall. 



Few specimens of this species have reached our herbaria. 

 The plants are more robust than those of Physostegia Vtrgtmana 

 and the large broad entire or merely repand-toothed leaf-blades 

 form a conspicuous contrast with those of the common species. 

 A comparison of the flowers of the two species under considera- 

 tion shows the calyx of the newly described one to be larger and 

 the corolla smaller than the corresponding members in Physo- 

 stegia Virginiana. The original specimens were collected many 



years ago in Louisiana. The one was gathered on prairies by 

 Mr. Carpenter while the other is from Alexandria, collected by 

 Dr. Hale. 



Euphorbia olivacea. 



Perennial, olive green, glabrous. Stems solitary or several to- 

 gether, 2- 7 dm. tall, simple or branched at the base ; branches 

 erect or ascending, forking above or topped by a 4-rayed umbel ; 

 leaves alternate below the umbel ; blades leathery, oblong, obo- 



