{{Use dmy dates|date=October 2023}} {{Short description|Type of fungal spores}} [[File:Diseases of greenhouse crops and their control (1920) (20781722020).jpg|thumb|Lettuce Diseases. a. Drop, h. ''Septoria'' leaf spot, c. same as b. but older spots, d. pycnida, '''e. pycniospores''']] '''Pycniospores''' are a type of spore found in certain species of rust fungi.<ref>{{Cite book |last=Allaby |first=Michael |url=https://books.google.com/books?id=wzZGQOmcjqAC |title=A Dictionary of Plant Sciences |date=2012-03-29 |publisher=OUP Oxford |isbn=978-0-19-960057-1 |pages=420 |language=en}}</ref><ref>{{Cite journal |last1=Rijkenberg |first1=F. H. J. |last2=Truter |first2=Susarah J. |date=1974 |title=The Ultrastructure of Sporogenesis in the Pycnial Stage of Puccinia Sorghi |url=https://www.tandfonline.com/doi/full/10.1080/00275514.1974.12019605 |journal=Mycologia |language=en |volume=66 |issue=2 |pages=319–326 |doi=10.1080/00275514.1974.12019605 |issn=0027-5514|url-access=subscription }}</ref> They are produced in special cup-like structures called pycnia or pynidia. Almost all fungi reproduce asexually with the production of spores. Spores may be colorless, green, yellow, orange, red, brown or black.

==Other types of spore== [[File:Diseases of greenhouse crops and their control (1920) (20781717760).jpg|thumb|a. ''Phomosis'' spot on eggplant leaf, '''b. pycniospores''', c. conidiophores, d. stylospores]] ;Sporangiospores Sporangiospores (spore:spore, angion:sac) are spores formed inside the sporangium which is a spore sac.

;Conidia Conidia (singular: conidium) are spores produced at the tip of special branches called conidiophores.

;Oidia Oidia (singular: oidium). In several fungi, the hyphae is often divided into a large number of short pieces by transverse walls. Each piece is able to germinate into a new body. These pieces are called oidia (small egg).

;Chlamydospores Chlamydospores (chlymus: mantle) are produced like oidia but differ from oidia in being thick walled. They are either terminal or intercalary.

==References== {{Reflist}}

{{Fungus structure}}

Category:Fungal morphology and anatomy Category:Mycology

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