SALICARLE. 125 



HAS. Under water. N. Y. to Virg. July. U>Stem long, slen- 

 der, leaves verticillate, in eights. Flowers axillary, solitary, 

 very minute. Hornwort, 



ORDER XLVI. SALICARLE. Lind. 



Calyx with one sepal, the lobes with a valvate or separate 

 aestivation. Petals inserted between the lobes of the calyx, 

 very deciduous, sometimes wanting. Stamens inserted into 

 the tube of the calyx below the petals, to which they are some- 

 times equal in number ; sometimes twice, thrice or four 

 times the number ; seldom four ; anthers adnate, 2 celled ; 

 ovary superior, 2 4-celled ; style filiform ; stigma usual- 

 ly capitate. Capsule membranous, covered by the calyx, 

 usually 1-celled. Seeds numerous, small, without albumen ; 

 embryo straight ; radicle, turned towards the hilum. Cotyle- 

 dons flat and leafy. 



Herbs rarely shrubs. Leaves opposite, seldom alternate, 

 entire. Flowers axillary or in terminal spikes or racemes. ' 



1. AMMANNIA. Linn. 



Calyx campanulate, 8-toothed. Petals 4, or none. Sta~ 

 mens 4. Capsule 4-celled, many-seeded, 1-celled. 



Tetrandria. Monogynia. 



1. A. ramosior Linn. : stem erect, somewhat 4-sided ; leaves linear- 

 lanceolate, dilated at the base ; flowers axillary, 'sessile ; the lower 

 ones compactly whorled ; the upper ones solitary ; petals 4, obovate- 

 roundish ; stamens 4. 



HAS. Salt meadows. N. J. to Car. Aug., Sept; 0. Stem 

 48 inches high; sometimes much higher. Flowers purple, 

 minute. 



2. A. humilis Mich. : stem procumbent at the base, square, some- 

 what branched ; leaves narrow-lanceolate, tapering at base ; flowers 

 sessile, solitary, axillary ; petals 4, orbiculate ; stamens 4. A. ramo* 

 tior Walt. 



HAB. Damp grounds. N. Y. to Car. Aug. 0. Stem 4 8 

 inches high, much more slender than in the former. Flowers 

 small, blue, 



2. LYTHRUM. Linn, 



Calyx cylindric, striate, 812 toothed. Petals 4 6, in- 

 serted into the calyx. Stamens as many or twice as many 

 as the petals, sometimes fewer. Style filiform. Stigma capi- 

 tate. Capsule oblong, 2-celled, many seeded. 



Icosandria, Monogynia, 



u. 



