My dear Sir

I am realy very sorry that I cannot help you in the Oxalis Question.¹ Though I remember, that I found several species of Oxalis in the Herbariums with cleistogamic flowers, I cannot tell you the names of them, for at that time, about 12 years ago, as I made my first observations on the Trimorphismus of Oxalis I thought that the cleistogamic flowers in this genus were sufficiently known, so I did not notice them. In my papers of that time I find only a notice that I saw three specimens of the trimorphic O. incarnata with cleistogamic flowers in the Herbarium of Seelmejer, that belongs to the: “Naturhistorischer Verein von Rheinland und Westphalen en Bonn”; but I think that they would not be of much use to you as you want living specimens.²

Regretting very much, that I cannot send you the desired Oxalis I remain,—dear Sir,—with much respect | yours | sincerely | Hildebrand