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src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg/220px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg" decoding="async" width="220" height="464" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg/330px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg/440px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781722020%29.jpg 2x" data-file-width="1342" data-file-height="2832" /></a><figcaption>Lettuce Diseases. a. Drop, h. <i><a href="/wiki/Septoria" title="Septoria">Septoria</a></i> leaf spot, c. same as b. but older spots, d. <a href="/w/index.php?title=Pycnida&action=edit&redlink=1" class="new" title="Pycnida (page does not exist)">pycnida</a>, <b>e. pycniospores</b></figcaption></figure> <p><b>Pycniospores</b> are a type of <a href="/wiki/Spore" title="Spore">spore</a> found in certain species of <a href="/wiki/Uredinales" class="mw-redirect" title="Uredinales">rust fungi</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> They are produced in special cup-like structures called pycnia or pynidia. Almost all fungi <a href="/wiki/Asexual_reproduction" title="Asexual reproduction">reproduce asexually</a> with the production of spores. Spores may be colorless, green, yellow, orange, red, brown or black. </p> <div class="mw-heading mw-heading2"><h2 id="Other_types_of_spore">Other types of spore</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pycniospore&action=edit&section=1" title="Edit section: Other types of spore"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Diseases_of_greenhouse_crops_and_their_control_(1920)_(20781717760).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg/220px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg" decoding="async" width="220" height="420" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg/330px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg/440px-Diseases_of_greenhouse_crops_and_their_control_%281920%29_%2820781717760%29.jpg 2x" data-file-width="1558" data-file-height="2972" /></a><figcaption>a. <i><a href="/w/index.php?title=Phomosis&action=edit&redlink=1" class="new" title="Phomosis (page does not exist)">Phomosis</a></i> spot on eggplant leaf, <b>b. pycniospores</b>, c. <a href="/wiki/Conidiophore" class="mw-redirect" title="Conidiophore">conidiophores</a>, d. <a href="/wiki/Stylospore" title="Stylospore">stylospores</a></figcaption></figure> <dl><dt>Sporangiospores</dt></dl> <p><a href="/wiki/Sporangiospore" class="mw-redirect" title="Sporangiospore">Sporangiospores</a> (spore:spore, angion:sac) are spores formed inside the <a href="/wiki/Sporangium" title="Sporangium">sporangium</a> which is a spore sac. </p> <dl><dt>Conidia</dt></dl> <p>Conidia (singular: <a href="/wiki/Conidium" title="Conidium">conidium</a>) are spores produced at the tip of special branches called conidiophores. </p> <dl><dt>Oidia</dt></dl> <p>Oidia (singular: <a href="/wiki/Oidium_(spore)" title="Oidium (spore)">oidium</a>). In several fungi, the <a href="/wiki/Hyphae" class="mw-redirect" title="Hyphae">hyphae</a> 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 <a href="/wiki/Egg_(biology)" class="mw-redirect" title="Egg (biology)">egg</a>). </p> <dl><dt>Chlamydospores</dt></dl> <p><a href="/wiki/Chlamydospore" title="Chlamydospore">Chlamydospores</a> (chlymus: mantle) are produced like oidia but differ from oidia in being thick walled. They are either terminal or intercalary. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pycniospore&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFAllaby2012" class="citation book cs1">Allaby, Michael (29 March 2012). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wzZGQOmcjqAC"><i>A Dictionary of Plant Sciences</i></a>. OUP Oxford. p. 420. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-960057-1" title="Special:BookSources/978-0-19-960057-1"><bdi>978-0-19-960057-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Dictionary+of+Plant+Sciences&rft.pages=420&rft.pub=OUP+Oxford&rft.date=2012-03-29&rft.isbn=978-0-19-960057-1&rft.aulast=Allaby&rft.aufirst=Michael&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DwzZGQOmcjqAC&rfr_id=info%3Asid%2Fen.wikipedia.org%3APycniospore" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFRijkenbergTruter1974" class="citation journal cs1">Rijkenberg, F. H. J.; Truter, Susarah J. (1974). <a rel="nofollow" class="external text" href="https://www.tandfonline.com/doi/full/10.1080/00275514.1974.12019605">"The Ultrastructure of Sporogenesis in the Pycnial Stage of Puccinia Sorghi"</a>. <i>Mycologia</i>. <b>66</b> (2): <span class="nowrap">319–</span>326. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F00275514.1974.12019605">10.1080/00275514.1974.12019605</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0027-5514">0027-5514</a>.</cite><span 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ethnomycology" title="Ethnomycology">Ethnomycology</a></li> <li><a href="/wiki/Lichenology" title="Lichenology">Lichenology</a></li> <li><a href="/wiki/Marine_fungi" title="Marine fungi">Marine fungi</a></li> <li><a href="/wiki/Medicinal_uses_of_fungi" title="Medicinal uses of fungi">Medicinal fungi</a></li> <li><a href="/wiki/Mycology" title="Mycology">Mycology</a></li> <li><a href="/wiki/Mycosis" class="mw-redirect" title="Mycosis">Mycosis</a></li> <li><a href="/wiki/Mycotoxicology" title="Mycotoxicology">Mycotoxicology</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Structure</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Reproduction/<a 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<ul><li><a href="/wiki/Dimorphic_fungus" title="Dimorphic fungus">Dimorphic fungi</a></li> <li><a href="/wiki/Mold" title="Mold">Mold</a></li> <li><a href="/wiki/Yeast" title="Yeast">Yeast</a></li> <li><a href="/wiki/Mushroom" title="Mushroom">Mushroom</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">List</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Glossary_of_mycology" title="Glossary of mycology">Glossary of mycology</a></li> <li><a href="/wiki/List_of_fungal_orders" title="List of fungal orders">List of fungal orders</a></li> <li><a href="/wiki/List_of_mycologists" title="List of mycologists">List of mycologists</a></li> <li><a href="/wiki/List_of_mycology_journals" title="List of mycology journals">List of mycology journals</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" 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