170 TETRANDRIA. MONOGYNIA. GALiunr* 



Flowers wh'iie. Segments oi the corolla ovate, oHuse. FruiC 

 small, densely covered with short hooked hairs. 

 Hab. In sandy pine woods in the northern and western parts of 

 tlie State of 'New -York. Near the Falls of Niagara. Eddy. 

 In Pennsylvania, &c. Pursh. 



The North-American plant exactly resembles specimens in 

 my Herbarium from Sweden. 



106. SPERMACOCE. L. 



Calyx 4-toothecl. Corolla infundibiiliform, 4-cleft. 

 Cfl'j&W^ 2-celled, not 2-parted; cells 1- seeded, biden- 

 tate. Seeds ^^ith inflected margins. Gen. pi 155. 

 Nutt. Gen. I. p. 94. J u s s. p. 197. Lam. III. 

 t. LXII.f. 2. jRoem.^Schuli.Gen.485. Nat. 

 Ord. Ru B I A c EJE Ju s s. Flowers axilbry. 



S. diodina Mich.: stem diffuse, terete, hairy; leave? 

 linear-lanceolate, nearly smooth ; margin and keel serrulate : 

 stipules with numerous long bristles ; flowers axillary, sessile, 

 solitary, alternate ; fruit hairy. M i c It. Fl. I. p. 72. Pursh 

 Ft. I. p. 105. El Holt Sic. I. p. 1 89. Roem. &iSchulL 

 III. p. 28^2. 



Root annual. Stem procumbent, branched at the base, about a 

 span long. Leaves opposite, sessile, acute ; keel and margin 

 roughened with minute teeth. Slifiiites surrounding the base 

 of the leaves, crowned with several brownish bristles. Flowers 

 in the axils of the leaves, generally solitary. Segments of the 

 calyx short, obtuse. Corolla white or pale purple, hairy. 

 Filaments included ; anthers oblong, Style shorter than the 

 corolla; sag-?na capitate. Ca/^sw/e 2-paried ? hispid; cells 1- 

 seeded. 



Hab. In sandy fields and on barren hills. New-Jersey ; parti- 

 cularly abundant about Passaic Falls. August. 



107. DIODIA. Gronovius, 



Calyx deeply 2-cleft, persistent. Corolla tubular- 

 inftindJbuliform, 4-cleft. Capsule 2-celled; cells 1- 

 seeded. Gen. pi. 158. Nutt. G'(?;z. I. p. 94. Juss, 

 197. Lam. III. t. LXIII. Roem. 8? Scliult. 

 Gen. 4:81. ^ Nat. Ord. Rubiace^ Juss. Habit of 

 the preceding genus. 



Ty.virginka L.: smooth; stem procumbent, nearly te- 

 rete; leaves lanceolate ; corolla smooth within ; fruit oblong, 

 smooth. Willd. Spec, I. p. .580. P iirsh Fl. I. p. 105, 



