Alnus acuminata

Alnus acuminata wani nau'in itace ne a cikin iyalin Betulaceae . Ana samunsa a cikin gandun daji daga tsakiyar Mexico zuwa Argentina.       

 Bayyanawa 
Alnus acuminata yana girma har zuwa mita  (80  tsayi tare da akwati madaidaiciya har zuwa 150 centimeters (60 in) kauri. Yankin yana da  masu launin rawaya da yawa. Shafuka suna da sauƙi, suna da siffar oval tare da gefen hakora. Inflorescences sune catkins, furanni na namiji da na mace a kan itace ɗaya. Furen namiji suna da tsawon 12  in) kuma suna da tsayi, yayin da ƙananan furanni mata suna da kore, tsaye kuma suna kama da ƙaramin ƙuƙwalwa. Bayan amfani da iska, furanni mata suna tasowa zuwa 2  in) tsawo dehiscent, 'ya'yan itace masu launin ruwan kasa. Akwai tsaba masu fuka-fuki 80 zuwa 100 a kowace 'ya'yan itace, kuma ana 'yantar da su lokacin da suka nuna, suna barin busassun' ya'yan itacen a kan itacen.

Akwai nau'o'i uku: Alnus acuminata'' subsp. acuminata yana faruwa daga Colombia da Venezuela kudu zuwa arewacin Argentina; Alnus acuminata subsp. arguta  (Schltdl.) Furlow yana faruwa daga arewa maso yammacin Mexico kudu zuwa Panama; da kuma Alnus acuminata subsp. glabrata  (Fernald) Furlow yana faruwa a tsakiya da kudancin Mexico.

 Rarraba da mazaunin Alnus acuminata yana girma a tsawo tsakanin mita 1,500 da 3,200 (4,900 da 10,500  a cikin tsaunuka a wurare masu zafi na Tsakiya da Kudancin Amurka daga Mexico zuwa arewacin Argentina. Yawancin lokaci yana girma a yankunan da ke da 1000-3000 mm na ruwan sama, a kan gangara da kwari. Yana jure wa ƙasa mara kyau da yanayin acid, amma ya fi son ƙasa mai laushi ko yashi mai yashi. Itace ne mai saurin girma, nau'in farko da aka yi amfani da shi don kariya ta ruwa kuma ana iya amfani da shi ngir inganta ƙasa saboda yana da tushen tushen da ke gyara nitrogen. A. acuminata yana nuna ikon bunƙasa a cikin yanayin da aka dame ko ƙalubalanci muhalli. Samun sa ga ƙasa marar amfani an danganta shi da ikonsa na kafa dangantakar ectomycorrhizal da actinorhizal. An san shi da saurin girma, wannan nau'in yana taka muhimmiyar rawa wajen inganta yawan haihuwa ta hanyar kara yawan kwayoyin halitta, matakan nitrogen, da ƙarfin musayar cation.

Idan aka ba da fa'idodi da yawa da A. acuminata ke bayarwa, jinsin ya sami karbuwa a cikin agroforestry. Manoma tare da matsakaicin itatuwan Alnus 130-161 a kowace hekta sun sami fa'idodi a cikin gudummawar da suka bayar ga ƙwaƙwalwar carbon, raguwar lalacewar ƙasa da haɓaka amfanin ƙasa bisa ga binciken da aka yi a arewa maso yammacin Rwanda.  Samar da albarkatun da ake buƙata don rayuwa ta yau da kullun a yankin, kamar itace, katako, da gungume don hawa itatuwan wake, ƙarin fa'ida ne.

 Itace 
Itacen yana da haske zuwa tsakiyar ja-launin kuma yana da kyau. Ana amfani da shi don gina gadoji da ginshiƙai, don yin akwatuna, akwatuna, caji, kayan ɗaki da katako. Har ila yau, yana yin itace mai kyau wanda ke ƙonewa a hankali.

 Amfani da Kiwon Lafiya 
An yi amfani da Alnus acuminata'' a al'ada a cikin maganin Tsakiya da Kudancin Amurka don magance kumburi mai tsanani. Don kimanta tasirin da'awar rigakafin kumburi da kuma tabbatar da ko abu yana da aminci kuma ba mai guba ba, masu bincike sun yi nazarin phenolic. An gano kwayar itacen ta ƙunshi triterpenoids da diarylheptanoids, wanda ke nuna cewa yana da rigakafin kumburi kuma yana da aminci don cinyewa.

 Manazarta