pulvinule

(ˈpʌlvɪˌnjuːl)

1. (Botany) botany (at the base of a leafstalk) a small swelling

2. (Botany) botany obsolete a pulvinulus

3. (Plants) obsolete a cluster of spores

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

References in periodicals archive ?

Some plants dare to rise a little more and then they grow forming pulvinules (rounded cushions); this aerodynamic form minimizes the impact of the wind, and the dense branches retain some heat and a moister environment.