How To Use Cleistogamic In A Sentence

Thus, in our common dog-violet the perfect flowers rarely produce seed, while the rudimentary cleistogamic flowers do so in abundance. Darwinism (1889)
In almost every order we find some plants which have become thus reduced or degraded for wind or self-fertilisation, as Poterium and Sanguisorba among the Rosaceae; while this has certainly been the case in the cleistogamic flowers. Darwinism (1889)
The cleistogamic flowers of Viola are used in the discussion on More Letters of Charles Darwin — Volume 2
Leersia oryzoides was for a long time thought to produce only cleistogamic and therefore autogamous flowers. More Letters of Charles Darwin — Volume 1
One chapter will be devoted to cleistogamic species, and I will just notice your new grass case. More Letters of Charles Darwin — Volume 2

Cruger, Dr., on cleistogamic fertilisation of Epidendrum. More Letters of Charles Darwin — Volume 2
The sweet violet also produces abundance of seed from its cleistogamic flowers, and few from its perfect flowers; but in Liguria it produces only perfect flowers which seed abundantly. Darwinism (1889)
Cruger's case here referred to is doubtless the cleistogamic fertilisation of Epidendrum, etc. More Letters of Charles Darwin — Volume 2
The pollen of the closed imperfect cleistogamic flowers differ in the transparency of the integument, and More Letters of Charles Darwin — Volume 2
I have some grand plants (and I formerly sent seeds to Kew) of the cleistogamic grass, but they show no signs of producing flowers of any kind as yet. More Letters of Charles Darwin — Volume 2