/ 



666 



DIOECIA DIANDRIA 



flosculis. Corolla 3 

 partita. . 



Fo em mei. Spa tha2 

 fidii^ ] -flora. Calyx 3 



partitiis, superus 



Co 



rolla 3 -petal a. Cajjsu 



la 



1-IociiIaris, 



poly 



sperma* 



covered with florets. 

 Qorolla 3-parted. 



Fertile jlorets. Spa' 

 the 2-cleftj 1-flowered. 

 Calyx 3-parted, supe- 

 rior. Qorolla 3-pet ai- 

 led. Capsule l-celledj 

 many seeded. 



/ 



«, 



1. Americaiva. Mich. 



V. foliis h'nearibus 



obtiisis,3-nervibus, ser- 



rulatis; peduriculis mas- 



cuUs 



mine is 

 Nutt. 



Leaves linear 



} 



ob- 



tuse 



foe- 

 spiralibus. 



tu^c, 3.nerved, serru- 

 late; peduncles of the 



sterile florets 



very 



short, of the fertile spi 

 ral. 



Mich. 2. p. 220. Sp. pi. 4. p. 651. Pursh, 2. p. 602. Nutt. 2. p. 230. 



4- 



An aquatic plant, floating or growing in stagnant or slow-flowing streams. 

 Leaves all radical. Scapes axillary. Female flowers generally furnished 

 with a spiral filiform scape, so as to admit them to rise to the surfac^of the 

 water when ready to expand. Scape of the sterile floret very shorty always 

 submersed; the flower itself, when mature, separates from the scape, ri^s to 

 the surface of the water^ expands and floats among the female florets until it 

 decays. The female floret, after the period of inflorescence, sinks beneath 

 the surface of the water and matures the fruit. Nutt. 



Grows from New-York to Florida. Nutt. This, like many of our aquatic 

 plants, has escaped my notice. 



Flowers August — October, Pursh. 



i 



/ 



>r4=^ 



SALIX. Gen. Pl. 1493 



%% ^ 



MasculL Amentum 

 cylindraceum. Calux 



squama 



Corolla 



Sterile Jlorets. 



ment cylindrical. , Ca- 



Corolla 



0, lyx a scale. 

 'Stamina 1 — 6, giandu- 1 0. Stamens 1 

 la baseos nectarifera. 



I ^. 



a 



6, with 

 nectariferous gland 



at base. 



