Typhonium venosum - Update

Zwölf Samen des Eidechsenwurzes Typhonium venosum wurden im März d. J. gesät, und binnen drei Wochen keimten drei dieser Samen. Zwar überlebten die Keimlinge nicht sehr lange, aber dessen ungeachtet wurde deutlich, daß auch eine einzelne Pflanze keimfähige Samen hervorbringen kann, es sich also nicht um eine starke Protogynie handeln kann.

Twelve seeds of Typhonium venosum were sown in march this year, and within three weeks three seeds did germinate. All seedlings died rather quickly, but anyway, since the seeds were generated by a single flowering plant, it has been shown that also single plants are able to produce viable seeds. This is remarkable, because a phenomenon called dichogamy has been reported for Typhonium venosum, i. e. male and female flowers do not appear at the same time, both sexes are separated in time. In case of T. venosum, the flowers are protogynous (noun: protogyny), the first function of the flower is female, the second male. (The opposite is called protandrous, noun: protandry.) Despite this temporal separation of flower functions, that favours cross-pollination, self-pollination is obviously not completely excluded.

Keimling von Typhonium venosum / Seedling of
Typhonium venosum