The Collaborative International Dictionary
Monochlamydeous
Monochlamydeous \Mon`o*chla*myd"e*ous\, a. [Mono- + Gr. ?, ?, cloak: cf. F. monochlamyd['e].] (Bot.) Having a single floral envelope, that is, a calyx without a corolla, or, possibly, in rare cases, a corolla without a calyx.
Wiktionary
monochlamydeous
a. (context botany English) Having a single floral envelope, that is, a calyx without a corolla, or, possibly, in rare cases, a corolla without a calyx.