Cakar ayam (Tumbuhan): Perbedaan antara revisi

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| image = Selaginella-sp.jpg
| image_width = 240px
| regnum = [[PlantPlantae]]ae
| divisio = [[Lycopodiophyta]]
| classis = [[Isoetopsida]]
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}}
 
'''(Paku) Rane''' ('''''Selaginella''''') adalah marga sekelompok tumbuhan berpembuluh yang merupakan satu-satunya anggota suku Selaginellaceae. Tumbuhan ini berkembang biak dengan [[spora]] bebas sehingga dianggap sebagai bagian dari [[tumbuhan paku]] (Pteridophyta), meskipun sekarang cenderung untuk dipisahkan dalam kelompok tersendiri bersama-sama paku kawat, kumpai, dan paku rantai (Lycopodiales) serta ''Isoetes'' dalam satu [[divisio]] tersendiri, [[Lycopodiophyta]].
 
Rane memiliki ciri daun kecil dan sederhana (disebut mikrofil) yang menyerupai sisik pipih dan duduk (tidak bertangkai), serta [[spora|heterosporik]] (menghasilkan dua tipe [[spora]] yang berbeda ukurannya). Pertumbuhan cabang dan daunnya tidak berupa gulungan membuka seperti paku sejati, sehingga memang sebenarnya rane dan kumpai bukanlah tumbuhan paku.
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''[[Selaginella moellendorffii|S. moellendorffii]]'' is an important [[model organism]]. Its genome has been sequenced by the [[United States Department of Energy]]'s [[Joint Genome Institute]].<ref>{{cite web |url=http://genomeportal.jgi-psf.org/Selmo1/Selmo1.home.html |title=''Selaginella moellendorffii'' v1.0 |year=2007 |work=[[Joint Genome Institute]] |publisher=[[United States Department of Energy]] |accessdate=2009-04-08}}</ref>
==Characteristics==
''Selaginella'' species are creeping or ascendant plants with simple, scale-like leaves ([[microphylls]]) on branching stems from which roots also arise. The plants are [[spore|heterosporous]] (megaspores and microspores), and have structures called ligules, scale-like outgrowths near the base of the upper surface of each microphyll and sporophyll. Under dry conditions, some species of ''Selaginella'' roll into brown balls (a phenomenon known as [[poikilohydry]]). In this state, they may be uprooted. Under moist conditions the brown balls become green, because of which these are also known as [[resurrection plants]] (as in ''Selaginella bryopteris'').
 
Unusually for the lycopods, each microphyll contains a branching vascular trace.
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*''S. braunii''
 
==RujukanReferensi==
{{reflist}}
 
{{Plant classification}}
 
[[CategoryKategori:Lycopodiophyta]]
[[CategoryKategori:Selaginella| ]]