Cov hom ntoo tawv tawv uas loj hlob ntawm thaj chaw ntawm Russia yog Schmidt birch lossis Betula schmidtii, tus sawv cev ntawm Birch genus koom nrog tsev neeg Birch. Cov hom nroj tsuag no tseem tau lees paub tias yog ib qho ntawm cov tsis tshua muaj neeg loj zuj zus hauv lub tebchaws.
Qhov twg Schmidt's birch loj hlob
Cov nroj tsuag, uas tau txais nws lub npe nyob rau hauv kev hwm ntawm tus nto moo botanist Fyodor Schmidt, uas tau pom thawj hom kab no thiab tau piav qhia nws, loj hlob hauv Far East ntawm Russia. Thiab tsuas yog nyob rau yav qab teb ib nrab ntawm Primorsky Territory.
Lub npe ntawm Fyodor Bogdanovich Schmidt, ua tsaug rau nws txoj haujlwm kev tshawb fawb, tau ntes tsis tsuas yog lub npe ntawm cov nroj tsuag, tab sis kuj tseem nyob hauv lub npe ntawm ib qho ntawm Sakhalin peninsulas, lub roob nyob ze Norilsk thiab lub roob hluav taws Kamchatka.
Tsis tshua muaj ntau, tab sis tseem, Schmidt cov ceg ntoo tau pom nyob hauv Suav teb (yav dhau los hauv xeev Jilin thiab Liaoning), hauv Nyij Pooj (ntawm Honshu cov kob), zoo li nyob rau thaj av qaum teb ntawm Kaus Lim Tebchaws.
Ib qho ntawm cov cwj pwm ntawm lub neej ntawm Schmidt birch yog kev loj hlob qeeb kawg hauv lub xyoo thaum ntxov ntawm lub neej. Hom nroj tsuag no tuaj yeem ncav cuag qhov hnub nyoog siab tshaj plaws ntawm 300-350 xyoo.
Cov neeg ua haujlwm ntoo, uas paub txog cov khoom zoo heev ntawm Schmidt's birch, hu ua nws "hlau ntoo". Lub npe menyuam yaus no tau txais ob qho tib si vim hais tias cov ntoo ntawm cov ntoo yog qhov nyuaj heev (nws tsis tuaj yeem raug chob los ntawm rab phom ntawm tus qauv caliber), thiab vim tias birch tiv taus hluav taws zoo heev.
Schmidt birch yeej tsis tau siv rau kev txua ntoo lossis nkoj, txij li, vim nws qhov hnyav thiab qhov nyuaj, nws tog sai heev hauv dej.
Lwm cov nta ntawm Schmidt birch
Qhov siab ntawm ib tus neeg laus cog ntawm cov hom no feem ntau yog 25-27 meters, thiab qhov siab tshaj plaws tau piav qhia qhov siab ntawm ib tus birch ncav cuag 35 meters. Lub cev pob tw yog li ntawm 70 txog 80 centimeters.
Cov tawv ntoo ntawm Schmidt birch feem ntau yog npog nrog kev sib sib zog nqus heev thiab yog tus cwj pwm los ntawm tev tawv thiab txhaws ntawm cov ntoo saum toj kawg nkaus. Nws cov xim feem ntau yog qab zib, beige, tab sis hauv cov neeg hluas nws tuaj yeem ua xim av sib sib zog nqus, thiab cov ceg ntoo me tshaj plaws ntawm cov nroj tsuag feem ntau pleev xim rau xim cherry lossis ntshav-xim av ntxoov.
Hauv cov laus ntawm cov hom no, cov qog ua kua nyob saum nplaim dej kuj tseem nquag.
Cov nplooj ntawm Schmidt birch yog ovoid, oval-elliptical lossis elliptical zoo li cas. Lawv feem ntau yog 4-9 centimeters ntev thiab 2.5-5 centimeters dav. Ntawm cov nplooj, uas qee tus botanists sib piv hauv cov tsos nrog nplooj ntawm grey alder, koj tuaj yeem pom 7-10 khub ntawm cov leeg pom meej rau hauv qab no. Los ntawm saum toj no lawv yog do hau, thiab los ntawm hauv qab no - nrog pubescence hnov li cas, luv luv petiolate, feem ntau feem ntau irregularly lossis doubly serrated.
Qhov ntev ntawm qhwv ntsej yog 2.5-3 centimeters, thiab qhov loj ntawm 200-300 tis tsis muaj txiv hmab txiv ntoo uas siav thaum lub caij ntuj sov lossis caij nplooj zeeg ntxov yuav ntev li 2 millimeters.
