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A specialised leaf bearing only microsporangia. A leaflike organ bearing one or more microsporangia.  

The growth form from which the microsporangia of Azolla are produced.  

The smaller-sized spores in heterosporous plants (as opposed to megaspores), the spores that produces male gametes. A small spore that germinates to form a male gametophyte.  

A sporangium that produces microspores, but is not necessarily smaller than the megasporangium.  

Species described based on minute differences, often used in apomictic taxa such as Taraxacum or Rubus.  

(In the ovule) an opening in the integuments through which the pollentube may enter the seed and through which the radicle usually emerges during germination. A little opening in the integument which forms the outer layer of an ovule or a seed. The pollen tube enters the ovule through this opening. An opening in the…

With minute dots or translucent glands.  

Leaf size class proposed by Raunkiaer (1934): between 226 and 2025 mm2; The leaves of Lycopodiopsida (clubmosses) with a single unbranched vascular vein. Leaf of a lycopod, which has a single unbranched vein and usually simple structure.    

(Of a surface) minutely granulate.  

Very local climatic condition, restricted to a particular habitat (e.g. rock crevices).