Your search for articles mentioning the genus Xanthosoma has found 31 articles.

Articles of 3 pages or less are available for free to IAS members for download, and longer articles for $5. Articles from issues in 2016 and beyond are only available electronically, and are free to current members when they are logged in.

Please remember that all Aroideana articles are protected by copyright, and you may NOT distribute even electronic copies without permission from the authors or editor.

Michael Madison A new species of Xanthosoma from Ecuador
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: Xanthosoma weeksii Madison, sp. nov. is described.
Michael Madison The genera of Araceae in the northern Andes (Buy)
 ABSTRACT: The north Andean region, which includes Colombia, Ecuador, and Peru, has perhaps the richest flora in the world and is the center of diversity of the family Araceae. The low to middle elevation wet forests of the area abound with aroids which cover the ground, climb up tree trunks, and as epiphytes adorn the outer branches of the trees. Many of our finest ornamental aroids, including Anthurium andreanum, A. crystallinum, Caladium bicolor, and Philodendron erubescens, are derived from this area. The purpose of this paper is to provide a key and brief descriptions of the genera of Araceae of the northern Andes which should enable anyone to identify to genus aroids from the region. The key is also applicable in Central America, but only partly so in the rest of South America where a number of additional genera, principally of the subfamily Aroideae, are found.
Michael Madison Protection of developing seeds in neotropical Araceae (Buy)
 ABSTRACT: In flowering plants with animal pollination and seed dispersal the reproductive cycle can be considered to consist of four stages, representing alternating phases of protection and display. In the protective phases immature flowers and fruits are safeguarded from predation and parasitism, while in the display phases pollinators and dispersal vectors are attracted. This alternation of protection and display is accomplished by a variety of mechanisms.
Michael Madison Notes on some aroids along the Rio Negro (Buy)
 ABSTRACT: In the fall of 1978 I spent several months collecting plants along the Rio Negro in the western Amazon in connection with the Projecto Flora Amazonas, an ambitious undertaking to prepare a new flora of the Amazon. Although my chief research interests on this expedition were not directed to aroids, I was able to make observations and collections of a number of species.
Mark D. Moffler Qualitative observations on tropical aroid cold tolerance (Buy)
 ABSTRACT: As winter approaches each year, we all become concerned about protecting our tropical plants, especially those which are the most susceptible to cold damage. The fall of 1978 was mild in Tampa, with temperatures seldom reaching below 100C (500F). The mild fall gave many of us a false sense of security and steps for cold protection were put off until "tomorrow". It wa~ this unfortunate procrastination that lead to a premature study of cold tolerance in aroids. My initial idea was to test several landscape and porch plants for cold susceptibility, but unfortunately, I unintentionally tested 46 different aroids.
Mark D. Moffler, Thomas B. Croat, Craig Phillips Short communications
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
Marianne Knecht The uses of Araceae in African folklore and traditional medicine
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: In many countries of Africa much effort is now being put into research on medicinal plants, and accounts already exist which list those species that are used in some form or other in traditional African medicine. However, these accounts do not include the personal observations of botanists, who have gathered valuable information from local people during the course of their fieldwork. The following summary includes statements that I have obtained during my own field tours in Ivory Coast in West Africa.
Thomas B. Croat Aroid collecting in western South America (Buy)
 ABSTRACT: I set off on my trip to western South America. I began in Ecuador and continued through Peru and returned by way of Colombia. In all, nearly two thousand aroids were collected and sent back alive. Herbarium specimens, notes and photographs were accumulated as well. My principal objective on the three month trip was to locate as many members of the bird's-nest Anthurium group as possible. Thus the search for this group (technically, section Pachyneurium) set the basic itinerary of the trip.
Michael H. Grayum The aroid flora of Finca La Selva (Buy)
 ABSTRACT: Costa Rica is a small Central American nation about the size of Denmark, with a remakable array of climatic regimes, and altitudes ranging from sea level to nearly four thousand meters. One can ascend from semidesert scrub forests on the Pacific slope, up through sodden cloud forests to pa'ramo (a kind of a high altitude chaparral) on the highest peaks, and down again on the Caribbean slope, through alders, elms and oaks, to humid lowlands and rain forests. The plants growing in this multifaceted domain are incredibly diverse, even by tropical standards. Costa Rica boasts nearly twenty-five percent more species of dicots, for example, than the lush tropical isle of Java, and nearly two and a half times as many species of dicot epiphytes (Burger, 1980) - this despite the fact that Java is two and a half times larger than Costa Rica and has yielded fifty percent more herbarium specimens per unit area (Prance., 1978).
Dan H. Nicholson Translation of Engler's classification of Araceae with updating (Buy)
 ABSTRACT: When Hooker (1883) was preparing the treatment of Araceae (Aroideae) for the monumental 'Genera Plantarum,' he basically followed the Schottian system, incorporating Engler's (1879) reduction in the number of genera. The first system was "popularized" by Hutchinson (1959) who, with a reversal of the sequence (bisexual genera first), published essentially an English translation of Hooker's latin. Engler (1905-1920), in his monumental 'Das Pflanzenreich', produced his final treatment of the family, including all then known species in nine volumes. This work remains the standard reference for the family as a whole.
James B. Watson A new name for Xanthosoma lindenii
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: One of the most beautiful aroids grown for its foliage is Xanthosoma lindenii. Recently, this species was transferred to the genus Caladium by Dr. Michael Madison in his article "Notes on Caladium (Araceae) and its Allies" (Selbyana, 1981, 5:342-377).
M. Johnson, David Prudhomme Photograph: Caladium lindenii
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
F. D. Ghani Ornamental and edible aroids of peninsular Malaysia (Buy)
 ABSTRACT: Most aroids are widely distributed in the tropics and subtropics with a few species in temperate regions. The majority occur in the countries of South East Asia, South and Central America, Africa and the West Indies. The family has a total of 110 genera and ca. 2500 species (Croat, 1979), 92% of which are in South East Asia and Central and South America. In Malaysia alone there are 23 native genera and about 120 species (Henderson, 1954).
Alan Herndon Naturalized aroids
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: Tropical plants are strangers in most of the United States. Freezing temperatures, unknown in their native lands, force them to remain inside protective walls throughout the cold season. In south Florida, however, freezing temperatures are rare, and many tropical plants can be grown outdoors all year round. Along with the ability to grow yearround outside also comes the ability to escape. Several aroids have done just that, and a few have entrenched themselves so well among the native flora that only our historical knowledge allows us to recognize that they were brought in deliberately by man.
Josef Bogner A new Xanthosoma species from Pará (Buy)
 ABSTRACT: Xanthosoma plowmanii Bogner. sp. nov. is described.
Thomas B. Croat, Nancy Lambert The Araceae of Venezuela (Buy Back Issue)
 ABSTRACT: An illustrated treatment of 171 Venezuelan Araceae taxa is provided. Discussion of range, species characteristics and distinction from similar or closely related species is made for each taxon. Sixteen species, three subspecies and one variety are described as new, and three new combinations are made.
Josef Bogner Morphological variation in aroids (Buy)
 ABSTRACT: The Araceae or aroid., are a large family of about 2400 species, grouped in 107 genera and these again in nine subfamilies. The aroids are mainly a tropical family and are distributed world-wide. They show great variation in their morphological characters, which will be described in this paper along with some other data.
Thomas B. Croat Ecology and life forms of Araceae (Buy Back Issue)
 ABSTRACT: The most interesting aspect of the family's ecology is the diversity of adaptive life forms. These range from submerged to free-floating, and emergent aquatics to terrestrial plants and to epilithic or epiphytic forms which may be true epiphytes or hemiepiphytic (growing on trees but rooted in soil). Hemiepiphytism is diverse itself, with some species beginning their lives as terrestrial seedlings, then growing skototropically (toward darkness) until they arrive at the nearest suitable tree ( usually a relatively large one which casts a darker shadow) where a physiological change takes place allowing them to grow toward light (Strong & Ray, 1975). They grow as appressed epiphytes on trees or as vines in the canopy. Others begin their lives as true epiphytes, some reconverting to hemiepiphytes by producing long, dangling roots contacting the forest floor below.
Julius O. Boos, Hans E. Boos Additions to the aroid flora of Trinidad with notes on their probable origins and uses (Buy)
 ABSTRACT: These notes are based on collections and observations commencing in July 1988, when the senior author visited his homeland. They document recent discoveries of both native and introduced species of aroids and attempt where possible to explain reasons for some of the introductions.
Gitte Peterson Chromosome numbers of the genera Araceae (Buy)
 ABSTRACT: An overview of the chromosome numbers of the genera of Araceae is given.
Thomas B. Croat, Thomas B. Croat Taxonomic status of neotropical aroids (Buy)
 ABSTRACT: While the Paleotropics has more genera than the Neotropics (60 versus 36) the latter area contains roughly twothirds the species of the world's Araceae. Our level of knowledge of the systematics of the neotropical Araceae varies greatly from area to area, owing largely to recent revisionary work or to the interest and area concentrated on by particular workers.
 Anonymous Errata
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
Thomas B. Croat History and current status of systemic research with Araceae (Buy Back Issue)
 ABSTRACT: This paper will cover all systematic and floristic work that deals with Araceae which is known to me. It will not, in general, deal with agronomic papers on Araceae such as the rich literature on taro and its cultivation, nor will it deal with smaller papers of a technical nature or those dealing with pollination biology. It will include review papers on technical subjects and all works, regardless of their nature, of current aroid researchers. It is hoped that other reviews will be forthcoming which will cover separately the technical papers dealing with anatomy, cytology, physiology, palenology, and other similar areas and that still another review will be published on the subject of pollination biology of Araceae and the rich literature dealing with thermogenesis.
Eduardo G. Gonçalves A new pedate-leaved species of Xanthosoma Schott (Araceae: Tribe Caladieae) with linear leaflets (Buy)
 ABSTRACT: A new hairy species of Xanthosoma (X. pottii) with pedate leaves and linear leaflets from Southwestern Brazil (Pantanal region) is described and compared to its closest relative, X. plowmanii Bogner. It is the only helophytic species of the genus so far recorded with compound leaves and linear leaflets, although such features seem to be somewhat common in other species of Araceae inhabiting open marshy habitats in Brazil.
Eduardo G. Gonçalves New aroid taxa from Brazil (Buy)
 ABSTRACT: Six new taxa of Brazilian Araceae are here described and illustrated (Philodendron nullinervium E.G.Gonc.; Philodendron tenuispadix E.G.Gonc.; Taccarum crassispathum E.G.Gonc.; Xanthosoma acutum E.G.Gonc., Xanthosoma rotundatum E.G.Gonc. and Xanthosoma pulchrum E.G.Gonc.). Along with them, a new name (Philodendron humile E.G.Gonc.) is proposed for Homalomena solimoense G.M.Barroso, since this has proved to be a species of Philodendron, and simply transferring the epithet as a new combination in Philodendron is likely to lead to confusion with the pre-existing name Philodendron solimoesense A.C. Smith.
J. Hernandez Notes on the Araceae of Botel Tobago (Buy)
 ABSTRACT: Araceae were observed on Botel Tobago. Ecological observations were made on all species seen. Pollinators were observed and collected from Homalomena philippinensis Engl. Zheng and Lu's (2000) species account for Schismatoglottis kotoensis (Hayata) T. C. Huang, J. L. Hsiao, and H. Y. Yeh is translated.
John Banta The first hybrid Xanthosoma - Xanthosoma 'Dr. Elliott'
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: This account of the production of the first hybrid Xanthosoma is offered in hope that other growers will work with this interesting genus.
Thomas B. Croat, M. Marcela Mora New taxa of Araceae from Cabo Corrintes in Choco Department of Colombia (Buy)
 ABSTRACT: New species of Araceae are described from the Estacion Biological El Amargal and vicinity on Cabo Corrientes in Choco Department of Colombia. These are Anthurium acutibacca Croat & M. Mora, A. amargalense Croat & M. Mora, A. arusiense Croat & M. Mora, A. debilis Croat & Bay, A. eminens Schott, ssp. longispadix, Croat & M. Mora, A. galeanoae Croat & M. Mora, A. grandicataphyllum Croat & M. Mora, A. morae Croat, A. pallidicaudex Croat & M. Mora, A. promininerve Croat & M. Mora, A. variilobum Croat & M. Mora, Monstera amargalensis Croat & M. Mora, Philodendron amargalense Croat & M. Mora, P. laticiferum Croat & M. Mora, P. longipedunculatum, Croat & M. Mora, P. roseocataphyllum Croat & M. Mora, Rhodospatha monsalvae Croat & Bay and Xanthosoma daguense Engl. var. amargalense Croat & M. Mora.
Eduardo G. Gonçalves, P. S. A. Diener, Ciro de Sousa, Grazielle Alarcao, G. O. Pina A preliminary survey of gynoecium morphology in Xanthosoma (Araceae) (Buy)
 ABSTRACT: The Neotropical genus Xanthosoma is an important source of food crops among aroid genera, but its taxonomy can be considered poorly resolved. In order to make a first approach to the morphological diversity in the genus, 14 species representing most of the range of morphologic variation were analyzed, considering gynoecium morphology and anatomy. Four different gynoecium types are here recognized and described. Presence and distribution of calcium oxalate crystals (druses and raphides), style morphology and arrangement of the anastomosing laticifers have proven to be the most important observed characters and are here suggested as useful taxonomic markers for the genus.
Julius O. Boos A new species of Xanthosoma (Araceae) for Trinidad
This article available FREE to IAS Members with a PERSONAL login. LOGIN, REGISTER or JOIN
 ABSTRACT: Xanthosoma aristeguietae (Bunting) Madison is described from Trinidad, W.I.
Thomas B. Croat, Pu Huang, J. Lake, Carla V. Kostelac Araceae of the flora of Reserva La Planada, Nariño Department, Colombia (Part 1) (Buy Back Issue)