Hi,
I have recognised the same on C. chrysanthus Jannine. I pulled out one and the roots were rotten but a new corm is build 1/3rd the size of normal...
Probably too wet or burned by to much fertilizer is my analyse.
But in spite of backstrokes I found the first time seed capsules on C. chrysanthus Milea and C.imperati.
Both grow in my lawn.
This is making me a bit happy as in my area 80% of the bee population died during the winter due to a new virus infection and Varoa mites infestation. This is the 2nd. consecutive year which is desaster for apiarists and fruit growers.