S 1 1 SCROPHULARIACEAE Hydranthelium 



in old logging roads, about old hog wallows, and on the borders of 

 dried-up ponds. 



Que. to B. C, southw. to Ga., Tex., and Calif. 



2. Gratiola virginiana L. (Gratiola sphaerocavpa Ell. and Gratiola 

 mesochora Peattie.) Map 1833. Infrequent to very rare throughout the 

 state on the muddy shores of artificial ponds, in ditches, and in wet places 

 in marshes. 



N. J. to Iowa, southw. to Fla. and Tex. 



7545A. LEUCOSPORA Nutt. 



1. Leucospora multifida (Michx.) Nutt. (Conobea multifield (Michx.) 

 Benth.) Map 1834. Frequent in the southern half of the state, soon be- 

 coming infrequent to rare northward and probably absent or very rare in 

 our northern counties. While well distributed, it is rarely found in colonies 

 but more or less as scattered plants, except on stretches of the slope of the 

 bank of the Ohio River, where it may be present for considerable distances. 

 It prefers a moist, sandy soil and is almost entirely restricted to bare places 

 on sand bars and muddy shores of streams and rarely in cultivated fields 

 and open woodland. 



Ohio to Iowa and Kans., southw. to Ga. and s. Tex. 



7548. HYDRANTHELIUM HBK. 



1. Hydranthelium rotundifolium (Michx.) Pennell. (Pennell. Mono- 

 graph Scrophulariaceae of eastern North America, p. 629. 1935.) (Bacopa 

 rotundifolia (Michx.) Wettst. and Bramia rotundifolia (Michx.) Britt.) 

 Map 1835. Infrequent in sink holes in Lawrence, Orange, and Washington 

 Counties, but not seen in sink holes in other counties where the same 

 habitat occurs. The specimen found in Warrick County was found in the 

 old canal near Millersburg. It was very common in the ponds where it was 

 found, although stock had injured it. 



Ind. and Tenn. to Mont., southw. to Colo, and Tex. 



7562. LINDERNIA All. 



Mature seed pale yellow, averaging 0.4 mm long and mostly twice or three times as 



long as wide; leaf blades 1-3 cm long, the lower ones generally narrowed at the 



base; pedicels shorter or longer than the leaves; later corollas falling unopened, 



the flowers cleistogamous. 



Pedicels as long as or longer than the leaves, 10-20 mm long, usually divaricately 



spreading 1. L. dubia var. typica. 



Pedicels mostly shorter than the leaves, usually less than 10 mm long, and mostly 



ascending la. L. dubia var. major. 



Mature seed a brownish yellow, averaging O.'A mm long and mostly one and a half to 

 two times as long as wide; leaf blades 0.5-1.5 cm long, nearly all rounded and 

 widest near the base; pedicels much longer than the leaves; corollas all opening, 

 not cleistogamous 2. L. anagallidea. 



