TRIANDRIA DIGYNIA. 119 



tlic interior valve the largest. Corolla^ of the fertile floret 2 valvecl. 

 Ovate, cartilaginous, as large as the interior valve of the calyx ; of the 

 sterile floret one valved, larger than the calyx, acuminate, membra- 

 nous, particularly along the margin, concave, forming with tlie in- 

 terior valve of the calyx a neutral floret, open at the summit. . . 



This is probably the P.divaricatum of Micliaux, The neutral floret 

 however is notpetlicillate; the other difterences may easily have arisea 

 from difference of soil and situation. As Linna*us had already cn- 



ployed this name, I have given one which appears more cl*aractcristic 



of this species. 



Grows in damp pine barrens. Very abundant near Michavx's old 

 farm, 10 miles from Charleston. 



Flowers August— October. Gaping Panicnm. 



H 



J 



b. Floribus diffusis so- I b. Flowers scattered, sol- 



lit a 1 



Lati 



itary 



P. panicula racemis la- 1 Panicle with the lateral 



teralibus simplicibus ; fo. 

 liis ovato-lanceolatis, col 

 lo pilosis. Sp. pi. 1. p 

 350. 



Walt p. 75. 

 Mich. 1. p. 49. 



racemes simple ; leaves 



ovate-lanceolate, hairy at 

 the throat. 



^oat perennial. Stem procumbent, about 1 foot WMi, columnar 

 pubescent, sometimes branching. Lea.^s almost hearJ^^haped, 1"' 

 brous, pale underneath, finely serrulate; 3-4 inches Ion-, Uu 

 mde einbracmg the stem ; sheatb hairy, at the throat, base, and alont 

 Dubpr>?'J'''''**'f ^'^^■^ 2 ^^^^^y^^^, her.naphrudite and neuter" 

 ?ras la?.V T"' ^^g^ V J^"°""' ^"^^^^ of the hermaphrodite flmv! 

 purple ° ^^^""^ ^^ ^^ ""^^'^^ ''"^"^^' ^^theTs\n^ Stig^s 



Grows in dry, rich soils, preferring shade. 

 J^lowers through the summer. 1 





Broad-leaved Pmicum. 



16. ScopAHiuM. La Marck. 



P. culmo, vaginisque I Stem and sheaths tery 

 fcsimis; foh,s supra villous; leaves glabroIS 



flot 'fl''-r"'\P^"'^'- °" *e upper surface; 



uijuscuus. £, flowers obovate, veiy 



%■ 



