CLEISTOGAMOUS is validvalid

having closed self-pollinating flowers [adj] : CLEISTOGAMOUSLY [adv]

178,530 of 196,601 in NWL2023·also valid in CSW24

relating to cleistogamy, the production of small inconspicuous closed self-pollinating flowers additional to and often more fruitful than showier ones on the same plant, also CLEISTOGAMIC [adj CLEISTOGAMOUSLY]