Waaierpalms het blare waarvan die segmente soos die lemme van \u2019n waaier, of die vingers van \u2019n hand, vanaf die end van die blaarsteel uitsprei. Daarenteen het die Kanariese palm, waarna ons voorheen in di\u00e9 reeks gekyk het, lemme wat soos die penne van \u2019n penveer uit die sentrale \u201cruggraat\u201d van die blaar uitsprei.<\/p>\n\n\n\n
Uit die ongeveer 2 600 spesies palmbome wat w\u00eareldwyd voorkom (hoofsaaklik in tropiese of subtropiese gebiede) is ses inheems aan Suid-Afrika. Die bekendstes is waarskynlik die wilde dadelboom, wat van die Oos-Kaap tot in Egipte aangetref word, die lalapalm wat van die suidkus van KZN noordwaarts langs die ooskus van Afrika tot in Somali\u00eb voorkom, en die kosipalm uit Kosibaai se w\u00eareld. Laasgenoemde spesie, terloops, het die onderskeiding dat sy veervormige blare wat tot 18 meter lank kan word, die grootste blare is van alle blomdraende plante. (Slegs die reuse-seewier in die Stille Oseaan het langer blare.) Die kosipalm blom net een keer in sy leeftyd. Op ouderdom tussen 25 en 35 jaar verskyn daar \u2019n massa vertakte blomme waaruit trosse glansende bruin vrugte ontwikkel. Daarna kwyn die boom stadig en swig uiteindelik voor die wind. <\/p>\n\n\n\n
Die palms waarop ons vandag fokus se tuisgebied is Noordwes-Meksiko en die halfwoestyn-streke van suidwes-Kaliforni\u00eb. Vandaar het hulle versprei na baie w\u00earelddele danksy hulle treffende, karaktervolle voorkoms, tesame met die feit dat hulle betreklik gehard is teen matige koue, met relatief min water kan klaarkom, en besonder lewenskragtig is, veral die Meksikaanse waaierpalm. <\/p>\n\n\n\n
Dis nie altyd maklik om die twee spesies van mekaar te onderskei nie, en daarby hibridiseer hulle, iets wat identifikasie-pogings verydel. Die Meksikaanse waaierpalm is die hemelbesem \u2013 \u2019n ho\u00eb boom (tot 30 meter hoog), bestaande uit \u2019n dun stam met \u2019n knoets blare aan die bo-ent rondom die groeiknop. <\/p>\n\n\n\n
Sy Kaliforniese neef is gewoonlik effens korter, ongeveer 18 meter wanneer volgroeid, hoewel dit 25 meter kan haal in gunstige omstandighede. Die Meksikaan se blare is heldergroen, die Kaliforni\u00ebr s\u2019n effe meer grysgroen. Die Kaliforni\u00ebr se stam is tipies dikker en altyd kersregop. Albei spesies het filamente, soos garingdrade, aan die rande van hul blaarsegmente, maar dis meer opvallend by die Kaliforniese waaierpalm, vandaar die spesienaam filifera (\u201cfilament-draend\u201d). Laasgenoemde spesie is ook meer geneig om sy verdroogde blare aan hul blaarstele te laat afhang om \u2019n onderrok rondom die stam te vorm, \u2019n gewoonte wat aan hom die volksnaam \u201conderrok-palm\u201d besorg het. <\/p>\n\n\n\n
By albei hierdie palms kom manlike en vroulike blomme op dieselfde boom voor. Albei se wortelstelsels bestaan uit \u2019n kompakte bol wortels wat uit die onderend van die stam groei, en wat geen gevaar vir strukture of nabygele\u00eb waterpype inhou nie. Navorsing op die Meksikaanse waaierpalm het bevind dat hy meer as 500 jaar oud kan word. Albei palms het groot, vlymskerp tande op hul blaarstele, en hoewel \u2019n uitgedroogde blaar nie swaar is nie, wil jy liefs nie in die pad van \u2019n vallende blaar kom nie. Die uitsny van dooie blare op \u2019n volgroeide boom is \u2019n taak vir \u2019n dapper persoon in \u2019n hyskraan-hokkie.<\/p>\n\n\n\n
Die merkwaardigste eienskap van hierdie wolkekrabber-bome is hul windbestandheid. As \u2019n mens in gedagte hou dat \u2019n palmboom se stam nie dikker word nie, en daar dus nie \u2019n skelet van stewige ouhout in die kern van die stam gevorm word nie, en as jy verder daaraan dink dat palmbome nie \u2019n spreidende, veelvertakte wortelstelsel het wat hulle anker nie, is dit verstommend hoe goed hulle die krag weerstaan wat stormwinde op die ho\u00eb blarekroon uitoefen. <\/p>\n\n\n\n
Wanneer laas het jy \u2019n palmboom gesien wat omgewaai het?<\/p>\n","protected":false},"excerpt":{"rendered":"
Bome van ons 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