The stem of the genus dioon was constrained by a height of 56 ma, as defined by the fossil showing the greatest macromorphological resemblance to dioon, dioonopsis praespinulosa hollick, 1932. Teosinte dioon mejiae is a dioecious tree native to honduras, whose seeds are used to make flour for the preparation of traditional foods and beverages. Williams, zamiaceae in northeastern honduras mark bonta,a oscar flores pinot,b daniel graham,c jody. Pdf epidermal morphology and leaflet anatomy of dioon. Permission is granted to copy, distribute andor modify this document under the terms of the gnu free documentation license, version 1. When it flushes you can rule in or out on the dioon mejiae.
It is usually a vigorous grower that holds a number of leaves in the crown. Dioon edule new and old cone, close up of female cone, and leaf detail. Agronomy free fulltext teosinte dioon mejiae flour. This paper describes the significance of the arborescent cycad tiusinte to honduran culture. It contains 11 accepted species that are native to mexico, honduras, and nicaragua. Dioon holmgrenii is an edulelike species from the pacific coast of oaxaca and is similar to dioon edule in its needs so they dont need to be repeated. R script to trim each read to an equal length based on read quality. Dichotomous keydioon wikibooks, open books for an open. It produces long light green leaves made up of many segments. Agree on the caudex size not being too big to be a dioon mejiae. Dioon caputoi showed equilibrium in population growth i.
Established in 1964, the iucn red list of threatened species has evolved to become the worlds most comprehensive information source on the global conservation status of animal, fungi and plant species. The range of form within the worlds other major cycad generacycas, ceratozamia, encephalartos, macrozamia, and zamiais more extensive, thus making identi. Online plant guide dioon mejiae cycad, spanish translit. The stem of the genus dioon was constrained by a height of 56 ma, as defined by the fossil showing the greatest macromorphological resemblance to dioon, dioonopsis praespinulosa. Cycads in the vernacular a compendium of local names. The latter develops many meters of trunk and tends to have a few spines on the leaflets. Dioon mejiae is the only species in the genus that occurs outside. Ethnobotany and conservation of tiusinte dioon mejiae. Dioon edule, dioon holmgenii, dioon mejiae, dioon merolae, dioon persuii, dioon sonorensae iucn red data lists. Overall the genus is highly important from the evolutionary point of view and the ecological. When working with keys, it is important to remember that they are contrivances to facilitate identification, not. Pdf dioon rzedowskii zamiaceae, a new species from mexico. Palma teosinte, teocinte, teocinta, tiusinte nahuatl. Find, read and cite all the research you need on researchgate.
Dioon califanoi in a 15g container dioon edule var. The genus dioon consists of 15 species calonje et al. Dioon mejiae is a wild food that supplements maizebean diets for an estimated 33,000. This cycad makes an excellent container plant and cannot tolerate freezing temperatures. It is a very tropical looking dioon, and similar in appearance, though usually much shorter than d. All authors have read and agreed to the published version. Abstract the new species dioon stevensonii, from the rio balsas basin. From a biomedical viewpoint they are an important group since their toxins. It is the most primitive american genus in the family and includes about 10 species, all of which grow in mexico and central america. The following key is designed to enable workers to identify all known species within the genus dioon. Help pages, faqs, uniprotkb manual, documents, news archive and biocuration projects.
Photographs of dioon, a genus of cycads in the family zamiaceae. Pdf ethnobotany and conservation of tiusinte dioon. Dioon is a genus of cycads in the family zamiaceae. Note the flush photo on how fuzzy the new leaves are. Dioon, a new world genus of cycads family zamiaceae. Ethnobotany and conservation of tiusinte dioon mejiae standl. Media in category dioon the following 10 files are in this category, out of 10 total. From wikibooks, open books for an open world dioon.
Pages in category dioon this category contains only the following page. Travel the world with a few trees and shrubs, from chile with the stunning red flowers of embothrium coccineum to japan with sciadopitys verticillata, and taste the surprising american pawpaw. The cycad genus dioon zamiaceae was described by j. As the plant matures the leaflets become simple without any spines except the sharp terminal one, similar to dioon mejiae. The latter develops many meters of trunk and tends to have a few spines on the leaflets even in adult plants. Like all cycads, dioon is an exotic, flowerless, seedbearing plant gymnosperm that produces seeds within a cone strobilus. Species definition of dioon sonorense zamiaceae, cycadales, and. Dioon mejiae is a wild food that supplements maizebean diets for an estimated 33,000 indigenous and. Dioon mejiae dioon species please click here for information and to see our available dioon mejiae plants.
A very popular cycad which is widely grown and has proved to be adaptable to a range of climates and. Native to honduras and nicaragua, where its common name is teosinte, dioon mejiae. It has leaves that as a seedling, closely resemble dioon spinulosum, but emerge with a pronounced tomentum on them. Dioon mejiae is a species of cycad that is native to honduras and nicaragua. Dioon califanoi zamiaceae, a new species from mexico. Dioon species eventually produce a tall trunk for a cycad, eventually reaching up to 10 in temperate gardens. A copy of the license is included in the section entitled gnu free documentation license. Dioon holmgrenii is an edulelike species from the pacific coast of oaxaca and is similar to dioon.
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