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POLLEN MORPHOLOGY OF FIVE SPECIES OF CACTOIDEAE SUBFAMILY (FAM: CACTACEAE), FROM THE LIMA PROVINCE (PERÚ)

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Author(s): LUIS DE LA CRUZ | LUIS CHIRINOS | WILLY AQUINO | PAMELA PUCHURI | ERIKA PAJUELO | ROBERTO UBIDIA | KAREN VENTURA

Journal: The Biologist (Lima)
ISSN 1816-0719

Volume: 11;
Issue: 1;
Start page: 1;
Date: 2013;
Original page

Keywords: Cactaceae | Cactoideae | Pollen | Trichocereeae

ABSTRACT
The morphological characteristics of five species of pollen from the subfamily Cactoideae, family Cactaceae, were described: Three species, Echinopsis chalaensis (Rauh & Backeb.) Friedrich & G.D.Rowley, Haageocereus decumbens (Vaupel) Backeb. and Pygmaeocereus sp. Johnson & Backeb., (Trichocereeae tribe); Corryocactus brevistylus (K. Schum. ex Vaupel) Britton & Rose (Pachycereeae tribe) and Neoraimondia arequipensis (Meyen) Backeb., (Browningieae tribe). All pollen grains observed under a light microscope appeared in monades, shape varying from spheroidal to spheroidal oblate; all colpate, with the exception of C. brevistylus, with spinules < 1 μm to 2 μm; exine thickness varied 2 - 3 μm; tectum without perceptible differences, always was pierced. An identification key is presented to differentiate species in this work.
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