Capillitium (pl. capillitia) is a mass of sterile fibers within a fruit body interspersed among

spore In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, ...

s. It is found in Mycetozoa (slime molds) and gasteroid fungi of the fungal subdivision Agaricomycotina. In the fungi, the form of the capillitia, including shape, size, branching patterns, presence or absence of slits or pores, thickness of the walls, and color, are features that can be used to identify certain species or genera.

References

{{Reflist, refs= {{cite book , title=Poisonous Mushrooms of the northern United States and Canada , vauthors=Ammirati J, Traquair JA, Horgen PA , year=1985 , publisher=Fitzhenry & Whiteside in cooperation with Agriculture Canada , location=Markham, Ontario , isbn=978-0889029774 , page=30, 376 , url=https://books.google.com/books?id=nhWbsGB7z4cC&pg=PA30&dq=capillitium {{cite book , vauthors=Kirk PM, Cannon PF, Minter DW, Stalpers JA , title=Dictionary of the Fungi , edition=10th , publisher=CAB International , location=Wallingford, UK , year=2008 , page=117 , isbn=9780851998268 , url=https://books.google.com/books?id=IFD4_VFRDdUC&pg=PA117&dq=capillitium Fungal morphology and anatomy