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die Auflésung der Reihe der Amentacew und die Einschaltung der von Eichler an- 
hangsweise als Ihyjsterop)y!a vereinigten Familien an verschiedenen Stellen des 
Systemes. Dass die Amentavea, welche bei Eichler die Cupulifire, die Juglunlaceer, 
Myricacee, Sulicacear, Casuarinacece umfassen, nicht einen natiirlichen Verwandtschaft- 
skreis darstellen, hat sich bei niherer Untersuchung der Sa. und der. Befruchtungs- 
vorgiinge in neuerer Zeit immer mehr herausgestellt, dass die Aufstellung der Hystero- 
phyts nur ein Notbehelf war, war bei der lingst bekannten Verschiedenheit ihrer 
Gyniiceen von vornherein Klar. 
The series, Amentaces, of ErtcHuEr, is a group, the members of which all 
agree in having male catkin. Though we may break up this group and make 
of it several groups, as ENGLER does, this is right only when the series is looked 
at in the way described by Excuer. Another alteration made by ENGLER on 
the same occasion, is right only when viewed in the same ‘light-as that in. 
which he looks at it. In my judgement, on comparing the systems of the 
great authors, such as Bentaam- Hooker, EicHLer, and ENGLER, his groups 
appears to be not the most natural but rather the most convenient. 
Then he proceeds to say’ :— 
Die beiden Unterklassen der Dikotyledoneen, Archichlamydew und Melachlamydex: 
oder Sympelalce sind beibehalten worden, obwohl eine scharfe Grenze zwischen-densel- 
ben nicht existiert. 
But, in my estimation, it is not enough in this case to say that there is but a 
faint line of division between the two subclasses, but it should be added that there 
is close inter-relation between the series of one subclass and those of the other, 
The inter-relation is closely manifested between the Cucurbitales and the 
Parietales ; between the Rubiales on one side and the Parietales, Rosales and 
Umbellifioree on the other ; between the Tubiflorse on one side and the Malvales, 
Parietales and Rhoeadales on the other; between the Contorte and the 
Sapindales; between the Ebenales on one hand and the Ranales and. Parietales 
on the other ; between the Primulales and the Sapindales; and finally between 
the Ericales on one side and the Parietales and Sapindales on the other. 
We shall explain this matter in detail as we go on in our discussion of Series 
after series. Here we see that to divide the Dicotyledones into the Archich- 
lamydez and Metachlamydex is only right according to the view upon which 
we dwell. But when viewed from another standpoint, it is not right. To 
1) Everer, A.— Erliuterungen, 1. «. p. 362. 
