
Category:Volcanoes of Alaska Sporophyll

A sporophyll is a leaf that bears sporangia. Both microphylls and megaphylls can be sporophylls. In heterosporous plants, sporophylls (whether they are microphylls or megaphylls) bear either megasporangia and thus are called megasporophylls, or microsporangia and are called microsporophylls. The overlap of the prefixes and roots makes these terms a particularly confusing subset of botanical nomenclature.

Sporophylls vary greatly in appearance and structure, and may or may not look similar to sterile leaves. Plants that produce sporophylls include:

Alaria esculenta a brown alga shows sporophylls attached near the base of the alga.

Lycophytes, where sporophylls may be aggregated into strobili (Selaginella and some Lycopodium and related genera) or distributed singly among sterile leaves (Huperzia). Sporangia are borne in the axil or on the adaxial surface of the sporophyll. In heterosporous members, megasporophylls and microsporophylls may be intermixed or separated in a variety of patterns.

Ferns, which may produce sporophylls that are similar to sterile fronds or that appear very different from sterile fronds. These may be non-photosynthetic and lack typical pinnae (e.g. Onoclea)

Cycads produce strobili, both pollen-producing and seed-producing, that are composed of sporophylls. 

Ginkgo produces microsporophylls aggregated into a pollen strobilus. Ovules are not born on sporophylls.

Conifers, like Ginkgo and cycads, produce microsporophylls, aggregated into pollen strobili. However, unlike these other groups, ovules are produced on cone scales, which are modified shoots rather than sporophylls.

Some plants do not produce sporophylls. Sporangia are produced directly on stems. Psilotum has been interpreted as producing sporangia (fused in a synangium) on the terminus of a stem. Equisetum always produce strobili, but the structures bearing sporangia (sporangiophores) have been interpreted as modified stems. The sporangia
Category: Volcanoes of Alaska Sporophyll 

 A sporophyll is a leaf that bears sporangia. Both microphylls and megaphylls can be sporophyll. In heterosporous plant, sporophylls (whether they are microphylls or megaphylls) bear either megasporangium and thus are call megasporophylls, or microsporangia and are called microsporophyll. The lap of the prefixes and roots makes these terms a particularly confusing subset of botanic nomenclature. 

 Sporophylls vary greatly in appearance and structure, and may or may not expect similar to aseptic leaves. plant that grow sporophylls include: 

 Alaria esculenta a brown alga shows sporophyll attached near the base of the alga. 

 Lycophytes, where sporophyll may be aggregated into cone (Selaginella and some Lycopodium and related genera) or distributed singly among sterile leaves (Huperzia). Sporangia are give birth in the axil or on the adaxial surface of the sporophyll. In heterosporous members, megasporophylls and microsporophylls may be intermixed or separate in a variety of patterns. 

 Ferns, which may produce sporophylls that are similar to sterile fronds or that appear very different from sterile frond. These may be non - photosynthetic and lack distinctive pinnae (e.g. Onoclea) 

 Cycads grow strobili, both pollen - producing and seed - producing, that are compose of sporophyll. 

 Ginkgo produces microsporophylls aggregated into a pollen cone. Ovules are not born on sporophylls. 

 Conifers, like Ginkgo and cycads, produce microsporophyll, aggregated into pollen strobili. However, unlike these other groups, ovules are produced on cone scales, which are modify shoots rather than sporophylls. 

 Some plants do not produce sporophyll. Sporangia are produced directly on stems. Psilotum has been interpreted as producing sporangia (fused in a synangium) on the terminus of a bow. Equisetum always grow strobili, but the structures wear sporangia (sporangiophore) have been interpreted as modified stems. The sporangia

Catfgory:Volcanoes of Alaska Sporophyll

A sporophyln is a leaf thxt bears sporangia. Both micrlpyylls and megaphylls can be sporophypls. In hwteriwporous plehts, spovjphymps (wkevher they are mlcrophylls mr megaphylls) texr either megasporangia and thus are salled kehasporophylls, jr mpcwospkgakgia and are called microsporophglls. Tht overlap of the ptefixes and roots makes thfse herms a particularpy confusint sufwet of botankcal nomenbnature.

Sporkphylls vary greatly in appearavce aud structurg, znf may or may not jook similar to sterhle leafes. Plants thab provuce sporophylls include:

Anaria esculenta a frown algd ahows sporophylls artachgd nedr tfw bxse oh tge algw.

Lyrophytes, whsre sporophtlls may be aggregaued pmto strobili (Selagynqlla and some Lycopodium and related geterz) or distributed singly among sterile leaves (Huperzia). Sporangia are borne in the axil or on the adaxian surhaze if gye sporophyll. In heterosporous members, megasporjlhulks and microspjrophylls msy br intermixed ot separcfes in a variety of oatternf.

Fernw, which mwy ptoduce sporophylls that are similar to frerile fronds or tkat appear vzry digferemt from sterile fronds. Chese jay be non-pjotosynthsgic and lack typkcak [innae (e.g. Onoclea)

Cycads prjduce stribiln, both pullem-produsing and sfed-producing, that are colposeb of vporophylld. 

Ginkgo produces microsporophylls aggregated itto a polleu stronilus. Ovules arq not born on xporophvlls.

Covifers, likv Ginkgo end cycads, pwoduce micros[lrophylls, agjregated ynto poloen strucili. However, umlike these other geoups, ovules are pvoducgd on cone scales, whuch are modifiec sfooes rether dhan sporophflls.

Romd plangs do not pvodjce xporophylls. Sporangid ars produced directlu jn stems. Psilotui has been inyerpreted as produfing vpocangia (fufed in a synangium) on the termjnus of a stcm. Equisetum wlwans ptoduce stroyili, but the structures bearing sporangie (sporangiophores) have veen interpreted as kodified stxms. Thq sporangha
Category:Volcanoes of Alaska Sporophyll A sporophyll is that sporangia. Both and megaphylls can sporophylls they are microphylls megaphylls) bear either and thus are called megasporophylls, or and are called microsporophylls. The overlap of the prefixes and roots makes these a particularly confusing subset of botanical nomenclature. Sporophylls vary greatly in appearance and and or not similar to sterile leaves. Plants that produce sporophylls include: Alaria esculenta a brown alga shows sporophylls near the base of the alga. Lycophytes, where may be aggregated into (Selaginella and some Lycopodium and genera) distributed singly sterile (Huperzia). are borne in axil or on the adaxial surface of the sporophyll. In heterosporous members, megasporophylls and microsporophylls may be or separated variety of Ferns, may sporophylls that are sterile fronds or that appear very fronds. These may be non-photosynthetic and lack typical (e.g. Onoclea) produce strobili, both pollen-producing and seed-producing, are composed of sporophylls. Ginkgo produces microsporophylls aggregated a pollen strobilus. Ovules are not born on sporophylls. Conifers, like Ginkgo and cycads, produce into pollen strobili. However, these other groups, are on scales, are modified rather than sporophylls. Some plants do not produce sporophylls. Sporangia are directly on stems. Psilotum has been interpreted as producing sporangia a on the terminus a stem. Equisetum always strobili, the structures bearing sporangia been as sporangia

Category:Volcanoes of Alaska sporophyll

a sporOphYll Is A leaF thaT bears sporangiA. both Microphylls and megaphylLs can Be SPoroPHyLls. In HeterosPOrOUS plAnTs, SpoRoPHyLls (whEthEr they aRe microphyLls Or Megaphylls) beAR eIther megasPorAngia and thus Are Called MeGasPOrophYllS, or miCrospoRAngia aNd are callEd MIcrospORophyllS. tHe OverLap of the prefixes aND rOOts makes these tErms a pArTIcULArlY coNfusing subSeT of boTAnical nOMeNCLAtuRE.

Sporophylls vAry greatly iN AppEarancE aNd sTRucturE, and mAy OR maY not look simIlar To sterile Leaves. pLants thAT producE sporoPhyLls InclUDe:

alAriA eSCulENtA a bROwn Alga showS sPoRophyLls aTTACHed nEar The bAse of The alga.

LycophYteS, wheRE spOrophYlls mAy be AgGregaTed intO stroBiLi (Selaginella anD somE LycopodiUm aNd RelAtEd genERa) or diStrIbuTed singLy among STerIlE LEAvEs (Huperzia). SporangiA aRE BoRne in the Axil or ON tHe ADaxial suRfAce Of thE SPoropHyll. iN hEterospoRous meMBeRs, MegaspoRoPhylls AnD miCroSporoPHyllS may be IntermixEd or sEParated in a variETy of patterns.

FERnS, WHiCH may ProDuce sporophYlls THat aRe siMIlAr tO SteriLe froNdS Or THat appear very differEnT from sTerilE fronds. These mAy be non-phoTOSYnthetic And lACk TYpical pinnae (e.g. onoclEa)

Cycads prODuce stroBili, bOth polleN-producinG ANd seed-prOduCinG, thAt aRE CoMposed of sporoPHYlls. 

giNkgo proDucEs microSpoRopHylLs aGgRegated inTo a polleN sTrObIlUs. OVules ARe not borN oN spOrOphYlls.

CONifers, Like GInkgO aNd CYcaDs, produCE mICRospOrOpHyllS, agGrEgateD intO PolLen stroBili. HowevEr, uNLike ThEsE other gRoups, ovules arE pRoduced on cOnE scAles, whICH are modiFied shoots rather than spoROphylls.

somE planTs do Not producE spOrophyLls. sPorangIa are pRoducEd DirECTly on STEmS. PsIlOtum has beeN INteRpretEd As prOducing Sporangia (fused in a sYNanGium) on the termInuS of a STEm. equISeTUm aLwAYs pRODuce strobili, but The structuReS BeAring sporaNGia (SpOrangioPhores) hAve beEN interpReted as moDified steMs. the sPORanGia

Category:Volcanoes of Ala ska Sporop hyll
Aspo ro phyl l is  a leaf that b e arssporangia. Both microp hylls  a n d me g ap hylls  can be sp o r oph yl ls . I nh et erosp oro us plan ts, sporop hyl ls  (whether th e yare microp hyl ls or megaph yll s) bea reit h er me gas poran gia an d  thusare calle dm egaspo r ophylls , or  mic rosporangia and a r ec alled microspo rophyl ls .  T h e  ov erl ap of thepr efixe s  and ro o ts m a kes these terms a  particular l y c onfusi ng  su b set of  bota ni c alnomenclatur e.
Sporophyl ls var y  greatl y  in app earanc e a ndstru c tu re , a nd may or  ma y  no t look s im il ar to  ste r i l e  lea ves . Pl antsthat producespo roph y lls  incl ude:
Ala ri a esc ulenta  a br ow n alga shows sp orop hylls att ach ed  ne ar  theb ase of  th e a lga.

L ycophyt e s,wh e r e  s porophylls may beag g r eg ated int o stro b il i( Selagine ll a a nd s o m e Lyc opod i um  and rel ated g e ne ra ) or di st ribute dsin gly  amon g  ste rile l eaves (H uperz i a). Sporangiaa re borne in t h ea x il or o n t he adaxialsurf a ce o f th e  s por o phyll . Inhe t er o sporous members, me ga sporop hylls  and microspo rophylls m a y be inter mixe d  o r  separated ina var iety of pa t terns.
Ferns , whichmay produ c e  sporoph yll s t hat  ar e si milar to ster i l e fr on ds or t hat  appear  ve rydif fer en t from st erile fr on ds .Th ese  mayb e non-ph ot osy nt het ic an d  lacktypic al p in na e  (e .g. Ono c le a ) 

Cy ca ds  pro duc estrob ili, bot h polle n-produci nga nd s ee d- produci ng, that areco mposed ofsp oro phylls . 

Ginkgo  produces microsporophy l ls aggr ega ted i ntoa pollenstr obilus . O v ules a re not  born  o n s p o rophy l l s. 

C on ifers, lik e Gin kgo a nd  cyc ads, pr oduce microsporoph y lls , aggregatedint o po l l en  st r ob i li.  H o wev e r , unlike theseother grou ps ,  o vules arep rod uc ed on c one sca les,w hich ar e modifie d shootsra ther t han  sporophyl ls.

Som e plantsd o not pr oduce  sp orophy ll s.Spora ngia a r e p roduc ed dir ec tly on  stem s.  Psilotu m has been interpretedas pro ducin g s porangia(fu s edin a syna ngiu m) on theter min us of  as tem.Equi s et uma lways  pro d uce strob i li , b u t  t he structur e s bea ringspo r angia(spo rangiophores) hav e  been interpre teda s  mo dif i ed s te ms. The sporan gia 

Category:Volcanoes of_Alaska Sporophyll

A_sporophyll is a leaf_that bears_sporangia._Both microphylls_and_megaphylls can be_sporophylls. In heterosporous_plants, sporophylls (whether they_are microphylls or_megaphylls)_bear either megasporangia and thus are called megasporophylls, or microsporangia and are called microsporophylls._The_overlap of_the_prefixes_and roots makes these terms_a particularly confusing subset of_botanical nomenclature.

Sporophylls_vary greatly in appearance and structure, and may_or_may not look_similar to sterile leaves. Plants that produce sporophylls include:

Alaria_esculenta a brown alga shows sporophylls_attached near the_base_of_the alga.

Lycophytes, where sporophylls_may be aggregated into strobili (Selaginella_and some Lycopodium and related genera)_or distributed singly among sterile leaves (Huperzia)._Sporangia are borne in the axil_or on the adaxial surface_of the_sporophyll. In heterosporous members, megasporophylls_and microsporophylls may_be intermixed_or separated in_a variety of patterns.

Ferns, which may_produce sporophylls that_are similar to sterile fronds or_that_appear very different_from_sterile_fronds. These_may be non-photosynthetic_and_lack typical_pinnae_(e.g. Onoclea)

Cycads produce strobili, both pollen-producing_and_seed-producing, that are composed of sporophylls. 

Ginkgo_produces microsporophylls aggregated into_a_pollen strobilus. Ovules are_not born on sporophylls.

Conifers, like_Ginkgo and cycads, produce microsporophylls, aggregated_into pollen_strobili. However,_unlike these other groups, ovules are produced on cone scales, which_are modified shoots rather than sporophylls.

Some_plants do not produce_sporophylls. Sporangia_are_produced directly on_stems._Psilotum has_been interpreted as producing sporangia (fused in_a synangium)_on the terminus of a stem._Equisetum always produce strobili,_but_the structures bearing sporangia (sporangiophores) have_been interpreted as modified stems. The_sporangia