NDLI: Anatomy of the reproductive structures of Stenanona flagelliflora (Annonaceae)

Content Provider	Springer Nature Link
Author	Andrés Hernández, Agustina Rosa Figueroa Castro, Dulce María Campos Villanueva, Álvaro Corona Velázquez, Tania Libertad
Copyright Year	2016
Abstract	The genus Stenanona comprises 15 species distributed from Mexico to Colombia. Stenanona flagelliflora is the only species in which the reproductive structures are found on the flagellum, a unique phenomenon in the flora of Mexico. Our objective is to recognize and describe anatomical features of flowers and fruits that contribute to the systematics of the species. We collected floral buds in three different stages of development (buds I, II, and III), flowers at anthesis, and immature and mature fruits in the ecological reserve of the ejido Adolfo López Mateos, Catemaco, Veracruz, Mexico; the samples were fixed in formalin–acetic acid–alcohol (FAA), cut, stained, and mounted using conventional histological techniques. The receptacle has numerous vascular bundles distributed in two cylinders: the perianth is trimerous; it has 32 stamens arranged in four whorls; the anthers have a deltoid-shaped extension of connective tissue; the gynoecium has 5–7 free carpels. Bud II showed a bitegmic and crassinucellate ovule with four layers of the outer integument and two of the inner integument, an ovary with trichomes on the outer epidermis and reduced style, and anthers in different stages of development. Bud III showed epidermis with bulliform cells in the style and stigma. The fruit is of berry type; the ripe fruit shows longitudinal series of fibers across the mesocarp. The endosperm is ruminate; the embryo is small and undifferentiated. These features are common in the Annonaceae family; however, the number of integumentary layers in the ovule and the presence of papillae on the style and stigma are novel characters.
Starting Page	679
Ending Page	687
Page Count	9
File Format	PDF
ISSN	01008404
Journal	Brazilian Journal of Botany
Volume Number	39
Issue Number	2
e-ISSN	18069959
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-04-08
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Systematics/Taxonomy/Biogeography Fruit Seed Development Mexico Flowers
Content Type	Text
Resource Type	Article
Subject	Plant Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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