A Grammatical Dictionary of Botanical Latin

lunatus,-a,-um (part.A): half-moon-shaped, crescent-shaped, lunated, falcated; bearing a crescent; marked with something of a crescent shape [> L. luno,-avi,-atum, 1. “to bend like a half-moon or crescent, to crook like a sickle (Lewis & Short)]; cf. meniscatus,-a,-um (adj.A), shaped like a half-moon or crescent; cf. bicornis,-e (adj.B), two horned; a reference to the two-horned, crescent or new moon; cf. ); cf. reniformis,-e (adj.B), crescent-shaped with the ends rounded; see sickle-shaped;

- pollinia post dehiscentiam lobis v. cornubus glandulae v. stipitis lunati v. hippocrepidiformis affìxa (B&H), the pollinia after dehiscence attached by lobes or horns of a glandule or crescent-shaped stipe.

- filamentum basi intus callo semilunari instructum (B&H), filament provided at the base with a half-moon-shaped callus.

- squamis coni fructiferi lateralibus ungui brevioribus semilunato-reniformibus glaberrimis (F. Mueller), with the scales of the fruitbearing cone lateral, shorter than the claw, half-(semi-)-crescent-shaped to reniform, completely glabrous.

obverse (adv.) lunatus,-a,-um (adj.A): inversely crescent-shaped, the horns projecting away from the axis; “inversely crescent-shaped; that is to say, with the horns of the crescent projecting forward instead of backwards” (Lindley).

Phaseolus lunatus L., Lima Bean, in reference to the lunate-shaped bean.