574 REPORT OF NICW jI-KSKY STATE MUSEUM. 

 Order THYMELEALES. 



Famil> Tl 1 \'AiELEA,CE/E. Mozercon. etc. 



DIRCA L. 



Dirca palustris 1... Leatherwood. 



Dirca {^ulustiis Linn.Tus, Sp. PI. 358. 1753 [Virginia]. — Britton 213. — Keller 

 and Brown 230. 



Occasional in rich \vo(3ds of the northern counties and at one 

 station within our limits. 



Fl. — Early or mid-April, probably ; before the leaves. 



Middle District. — Two miles west Woodstown, Swedesboro (CDL), Salem 

 (H). 



Order MYRTALES. 



Family LYTHRACE/E. Loosestrife, etc. 



Key io the Species. 



a. Calyx tube campanulate, flowers regular. 



h. Flowers small axillary, low aquatic herbs. 



c. Capsule bursting irregularly. [Amniania koehneiY 



cc. Capsule splitting longitudinally. Rotala ramosior, p. 574 



hb. Flowers large, purple, in axillary C3'mes, forming whorls, plant an 



aquatic shrub. Decodon verticillatus, p. 575 



aa. Calyx tube cylindrical, flowers regular, purple. 



b. Flowers axillary, solitary. 



c. Leaves mostly alternate, flowers 6-10 mm. broad. 



Ly thrum ah turn, p. 576 

 cc. Leaves mostly opposite, flowers 3 mm. broad. 



Lythrum lineare, p. 575 

 bb. Flowers in panicled terminal spikes 12-16 mm. broad. 



[L. salicaria L.]' 

 aaa. Calyx tube tubular, flowers irregular, purple, plant viscid. 



Parsonia petiolata, p. 576 



ROTALA L. 



Rotala ramosior (L.). Rotala. 



Ammania ramosior Linnaeus, Sp. PI. 120. 1753 [Virginia]. — Britton 107. 

 Ammania Jiuinilis Barton, Fl. Phila. L 91. 1818. — Willis 24. 

 Rotala ramosior Keller and Brown 230. 



^ Occurs on the Hackensack Marshes. 



" Purple Loosestrife, wet meadows and swamps locally introduced. 



