SYSTEMATIC POSITION OP MITRASTEMON. 211 



/9 Ovula ad parietem germinis plus minus stipitata, anatropa, 

 integumento unico instructa. Antherse connatse multiseriataB 

 mitram formantes. Germen superius. 



Tribus III. Mitrastemoneaa. 



Y Ovula placentis prominentibus varie divisis insidentia, 

 atropa, integumento unico prsedita. Germen inferius. 



Tribus IV. Cy tineas. 



V. Resume. 



Mitrastemon has a close affinity to the Raffiesiacese in its external 

 as well as its internal morphology. It differs from the same family in its 

 having an entirely superior ovary and mitraform united stamens. These 

 differences are not such as differentiate families, but are rather tribal or 

 generic. To refer the plant to the family named, it is necessary to extend 

 the definition formerly given to it to such an extent as to recognise that it 

 has usually an inferior ovary but sometimes a superior ovary and mitraform 

 united stamens. The points differentiating this plant from the three tribes 

 \ve have at present in this family, are sufficiently great to make it not 

 unworthy of having a special tribe established for it. The new tribe 

 Mitrastemoneaa should be placed next to Apodantheae. 



VI. Literatur consulted. 



BENTHAM et HOOKEE, Genera Plantarum I., II. and HI. 

 ENGLEE, A., Balanophoraceae, in ENGL. u PBANTL, Natiirl. Pfl.-fam. III.-l, 

 pp. 243-263 



u GILG, E., Syllabus der Pflanzeiifamilien 7-Aufl. (1912). 



GOEBEL, K., I. Organographie der Pflanzen (1898-1901). 



:, IE. Vergleichende Entwickelungsgeschichte der Pflanzenorgane, 



aus der Encykl. der Naturwiss. (1883). 



HAY ATA, B.,' I. On some interesting plants from the island of Formosa, in 

 Tokyo Bot. Mag. XXVI. (1912). 



