Kyakkyawan samara irin nau'in 'ya'yan itace ne mai bushe inda nau'in iri yake kewaye da nama wanda yake taimakawa wajen ɗaukar iri daga itacen kamar yadda iska ke motsawa. 'Ya'yan itacen ba ya rabu da ita, wanda ke nufin yana da lalacewa. Ana samun su a cikin manyan kungiyoyi akan itace.
Ba duka samaras suna kama ba. Wani samfurin samara da aka saba da shi shine wanda aka gano a bishiyar bishiyoyi ( Acer spp. ). Bishiyoyi na Ash ( Fraxinus spp. ) Suna samar da samara wanda ke nuna sashin layi guda.
Elm bishiyoyi ( Ulmus spp. ) Suna samar da sama inda inda aka samo asali a tsakiyar wata takarda.
Misalan wasu bishiyoyi da shrubs da suka samar samaras:
- Kayan da aka saba ( Ptelea trifoliata )
- Flabellaria paniculata (wani itacen inabi na Afrika)
- Tree of sama ( Ailanthus high )
- Tulip itace ( Liriodendron tulipifera )