Anatomical characters of stem segments in species of Opuntioideae (Cactaceae) subfamily

Author(s)

Emilia Cristina Pereira de Arruda ^[1] ; Gladys Flavia de A. Melo-de-Pinna ^[2]

Affiliation

^[1] Universidade Federal de Pernambuco. Departamento de Botânica. Centro de Ciências Biológicas - Brasil

^[2] Universidade de São Paulo. Departamento de Botânica. Instituto de Biociências - Brasil

• Document type: Journal article
• Source: Hoehnea; v. 42, n. 2, p. 195-205, 2015-06-00.

Abstract

ABSTRACTThis work presents a general anatomical characterization of the stem segments of four species of Opuntioideae with emphasis on the dermal and ground tissue systems, and a review of the anatomical studies for the subfamily. Some characters are distinctive for the studied species, such as: stomata position in the same level of the remaining epidermal cells, occurrence of papillose epidermis and trichomes, stomata type, cell type of the palisade cortex, and occurrence of mucilaginous channel next to the phloem. In conclusion, our results show that some anatomical aspects on the dermal and ground systems are useful in the diagnosis of species. Furthermore, original data about distribution of medullary cells with secondary wall thickening are described in Opuntia or Opuntioideae. (AU)

• FAPESP's process: 09/14708-0 - Anatomical studies and its implications on phylogenetic relations of Caryophylalles.
• Grantee: Gladys Flávia de Albuquerque Melo de Pinna
• Support Opportunities: Regular Research Grants