BOTANICAL GAZETTE. 
Von. X. MAY, 1885. No. 5. 
4 
BY E, KOEHNE (Berlin-Friedenau). 
Since I have been occupied during fourteen years with an in- 
vestigation as careful as possible of the Lythracee, J think it will 
be of some interest to North American botanists to learn the re- 
sults of my studies, as far as they concern species of the United 
tates. The systematic part of my monograph has been pub- 
lished in the first four volumes of Engler’s Botanische Jahrbucher. 
n the fifth and sixth volumes, in two extensive articles, I have 
treated of the morphology of the order, and in one of the follow- 
'ng volumes I will speak with some completeness of its geograph- 
ical distribution. The whole will be concluded by a complete 
index of names, including the synonyms. : 
It is not my intention to give, in the following site deseri 
a “ . 4 
Pleasure in determining any Lythraceous plants which botanists 
nd me. 5 ; 
_ As for the descriptions, I must refer to my monograph, but a 
i be of use to supply this defect at least by short analytica 
evs, : 
KEY TO THE GENERA. 
Flowers unsymmetrical, with 6 petals and 11 stamens. V. CuPHEA. 
Flowers r ular, ; 
Flowers solitary in the axils of the leaves, sessile or 
su ile. 
Calyx shortly campanulate or semiglobose. Sta- 
sae III. PEpPuis. 
Capsule indehiscent. Petals none. 
