DIADELPHIA.—OCTANDRIA. 26 1 



beardless ; calycine wings obovate, as long as the 

 capsule. 

 1IAB. Wet meadows. July— Oct. ©. Stem 8— 

 12 in. high ,• fl. loose, dark rose-col . 

 3. P. verticillata : leaves verticillate, linear, whorla 

 remote ; racemes spiked, acute, pedunculate ; 

 flowers cristate ; calycine wings roundish ; stem 

 erect, branched. 

 HAB. Dry hills. July— Oct. ©. Stem very slend.. 

 quadrang. ; fl. small, greenish -zeh. 

 0. P. ambigua: leaves linear ; the lowest ones verti- 

 cillate ; the rest scattered ; spikes acute on very 

 long peduncles; flowers cristate; calycine wings 

 round and veined, as long as the fruit ; stem erect, 

 virgately branched. 

 HAB. Wet woods. ©. Fl. purplish, distinctly 

 pedicellate. 

 10. V . fastigiata : stem slender, fastigiate ; leaves al- 

 ternate, linear, acute ; spikes subcapitate, pedun- 

 culate ; flowers subcristate; calycine wings 

 spreading, ovate, acute, scarcely larger than the 

 capsule. 

 HAB. New-Jersey. © . 

 1 f . P. cruciata : stem fastigiate, winged at the angles ; 

 leaves verticillate in fours, linear-oblong, punc- 

 tate ; spikes dense, sessile ; flowers subcristate ; 

 calycine wings cordate, cuspidate. 

 HAB. Open swamps. Aug.— Sept. 0. Stem 

 often spreading ; fl. greenish-pur p. 

 r2. P. brevifolia : stem erect, subfastigiate, winged at 

 the angles ; leaves verticillate in fours, oblong- 

 linear, short, sprinkled with resinous dots ; 

 spikes pedunculate, partly capitate; flowers sub- 

 cristate ; calycine wings cordate-ovate, acute 

 scarcely longer than the capsule. 

 HAB. Sandy swamps. July— Aug. © . Sten 

 der ; branch, erect; fl. red. 

 1 I. P. corymbosa: stem simple, angular, corymbose 

 at the summit, many-headed ; radical leaves spa 

 thulate-obovate ; cauline subequal, linear ; caly- 

 cine wings oblong, cuspidate. 

 HAB. Sphagnooi swamps. Jul) — Aug. Stem \ r ' 

 in, high ; fl. yell., dark green when dry. 



