Leaf anatomy and root Urera caracasana (Ur ticaceae) in the province of Tucumán, Argentina
Keywords:
Anatomy, leaf morphology, leaf, root, Urera Caracasana, UrticaceaeAbstract
Ávila Hael, Natividad G.; María A. Saracho Bottero; Jorgelina V. Medaglia; Patricia L. Albornoz; Marta E. Arias. 2010. “Leaf anatomy and root Urera caracasana (Ur ticaceae) in the province of Tucumán, Argentina”. Lilloa 47 (1-2). U. caracasana is located on the lower montane forest, between 500 and 800 msnm. This paper describes the anatomy of leaf and root. Fresh material was fixed in FAA. Conventional histological techniques were used. Leaves are simple, alternate with pinnate venation, caspedódroma, dorsiventral, hypostomatic. Stomata are actinocytic and cyclocytic type. Trichomes are single, glandular and stinging. Cystolits are present in leaf. The petiole is subcircular with trichomes similar to leaves. Blade and petiole have calcium oxalate crystals in the form of druses. The elements of diagnostic value for identification of this species are: types of stomata, leaf trichomes and crystals and secondary structure type root.
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