Emhlabeni, kunezinhlobonhlobo ezinkulu zabamele umhlaba wezitshalo, lo ngumhlaba wezitshalo, owahlukaniswa isigaba, ukufana kwawo nomehluko, kwahlukaniswa yimindeni, uhlobo kanye nezinhlobo, konke lokhu ukuze kube lula ukuhleleka. Kuzo zonke izitshalo zezitshalo, ezithandwa kakhulu futhi ezazidumile kwakuyizilimo zezithelo, ebezitshalwa ngumuntu kusukela ezikhathini zasendulo, njengezilimo zokudla.
Ngemuva kwezilimo zezithelo, izilimo eziqhakazayo, ezinokubukeka okhethekile okuhlobisa, zathola ukunakwa okukhulu, kanye nazo izitshalo ezazinempahla ekhethekile azinakwa, izitshalo ezinjalo zazaziwa kakhulu njengabaphilisi, futhi zazisetshenziselwa ukwelapha izifo.
Kuze kube manje, asikho isitshalo esisodwa esashiywe ngaphandle kokunakwa, okungeke kube nentshisekelo kumuntu oqonda futhi afunde imvelo, ethola izinhlobo ezintsha zezitshalo. Ngokuthuthukiswa kolwazi emkhakheni wezitshalo, kwabonakala intshisakalo ekhethekile futhi ibonakaliswa ngokuzalaniswa, okungukuthi ekutholeni izinhlobo ezintsha zezitshalo zezitshalo ngokuwela izitshalo ezimbili ezahlukahlukene. Le sayensi ithole isasasa elikhudlwana ekuthuthukisweni kwe-biology yamangqamuzana.
Umuntu waqala ukuhlakulela amasiko amaningi, izimbali nezitshalo ezikhula njengezimbali zasekhaya, ikakhulukazi zombili ezimeni zokutshala ingadi, nanjengezitshalo zasendlini. kuzo zonke izimo, amasiko amaningi athola ukunakwa okukhulu kubo bobabili abathandi bezimbali nabasebenza ngezimbali ezinhle. Phakathi kwakho konke ukwahlukahluka, kufanelekile ukuqaphela amasiko amancane aqhakaza izimbali anjengePeperomia Tupolistnaya, konke ukwahlukahlukana komndeni wakwaBegoniaceae, iningi lamaFern, kanye nezinhlobonhlobo zezitshalo ezingathandeki. Isitshalo ngasinye esingenhla sinendawo yaso ethile yemvelo.
Izinhlobo ezithile zezitshalo zabhalwa eNcwadini ebomvu, ngenxa yemvelo yazo, futhi ngenxa yobudedengu babantu, ukusetshenziswa ngenhloso noma ukubhujiswa kohlobo oluthile lwesitshalo. Uhlobo ngalunye lwesitshalo lubaluleke kakhulu emhlabeni, ngoba ngokuzayo izinto ezinjalo kungaholela enhlekeleleni engenakuphikwa yemvelo. Okwamanje, eRussia kuphela kanye ne-RSFSR yangaphambili, izinhlobo ezingaphezu kwezingu-200 zezitshalo zibhalwe kwiBhuku elibomvu, iningi lazo elingiosperms.
