Three new species and a revised key to species of Oxalis section Polymorphae (Oxalidaceae)

Fiaschi, Pedro
June 2014
Brittonia;Jun2014, Vol. 66 Issue 2, p134
Academic Journal
Three new species of Oxalis sect. Polymorphae are here described and illustrated: Oxalis artemioides, O. calcicola, and O. monochasiata. These species have narrow geographic distributions, each being known from just one location. Oxalis artemioides differs from other species of the section by the glabrous stem, narrow terminal leaflets (8-10.5 × 2 mm), and inflorescences with elongated dichasial branches bearing flowers only in the distal portion. Oxalis calcicola differs from other species by having the young stem with adpressed-retrorse trichomes, inflorescences shorter than adjacent leaves, short dichasial branches (0.5-3 mm long) with flowers densely grouped along the entire length, and glabrous pedicels. Oxalis monochasiata is remarkable because of its monochasial inflorescence and the two-ovulate carpels, both features unique within Oxalis sect. Polymorphae. The new species are compared to similar species of the section, and information on distribution and habitat, phenology, and conservation status according with IUCN criteria are provided. Geographic distribution maps, lists of examined materials and an identification key for species of this section are also presented.


Related Articles

  • Dos especies nuevas de Borreria (Rubiaceae) y sinopsis de las especies de Bolivia. Cabral, Elsa; Miguel, Laila; Soto, José // Brittonia;Dec2012, Vol. 64 Issue 4, p394 

    Two new species are described, Borreria cerradoana and B. velascoana, from Bolivia and Brazil, and a new combination is made, B. spinosa var. minima. Through an identification key, all 28 species of Borreria for Bolivia are recorded, and comments on geographical distribution and habitat are...

  • Replacement of Species Along Altitude Gradients: The Role of Branch Architecture. Rubén Milla; Luis Giménez-Benavides; Gabriel Montserrat-Martí // Annals of Botany;Dec2008, Vol. 102 Issue 6, p953 

    Background and aims Plant species typical of cold and warm habitats differ in a suite of morpho-physio-phenological traits, although their evolutionary routes have been poorly explored. Here, it is advocated that traits typical of different climate regimes can be largely driven by contrasting...

  • ARCEUTHOBIUM GILLII AND A. NIGRUM (VISCACEAE) REVISITED: DISTRIBUTION, MORPHOLOGY, AND RDNA-ITS ANALYSIS. Kenaley, Shawn C.; Mathiasen, Robert L. // Journal of the Botanical Research Institute of Texas;2013, Vol. 7 Issue 1, p311 

    Additional morphological, phenological, and molecular data were obtained for Arceuthobium gillii and A. nigrum from throughout their geographic distributions in northern Mexico and southern Arizona. Multivariate analysis of variance (MANOVA) and discriminant function analysis demonstrated that...

  • A new species of Rhodospatha (Araceae), with a key to species from the Atlantic Rainforest, Brazil. Temponi, Lívia; Poli, Letícia; Croat, Thomas // Brittonia;Mar2012, Vol. 64 Issue 1, p57 

    A new species of Araceae, Rhodospatha arborescens, was found in two preservation areas in Minas Gerais state, Brazil, Caratinga Biological Station and Rio Doce State Park, both located in a semideciduous seasonal forest (Interior Atlantic Rainforest). The new species is helophytic and...

  • Tres especies nuevas de Manfreda (Agavaceae) del sur de México. García-Mendoza, Abisaí Josué // Revista Mexicana de Biodiversidad;2011, Vol. 82 Issue 3, p747 

    Three new species of Manfreda (Agavaceae) from Guerrero and Oaxaca, Mexico are described and illustrated: Manfreda justosierrana, M. umbrophila and M. verhoekiae. Comments on their distribution, habitat, phenology and possible relationships to other species of the genus are provided.

  • Baphia vili ( Leguminosae: Papilionoideae), a new species from coastal thicket in the Republic of the Congo and Gabon. Cheek, Martin; Kami, Emile; Kami, Teva // Willdenowia;2014, Vol. 44 Issue 1, p39 

    Cheek M., Kami E. & Kami T.: Baphia vili ( Leguminosae: Papilionoideae), a new species from coastal thicket in the Republic of the Congo and Gabon. - Willdenowia 44: 39-44. 11 March 2014. - Version of record published online ahead of inclusion in April 2014 issue; ISSN 1868-6397; © 2014 BGBM...

  • Scaphochlamys stenophylla ( Zingiberaceae): a new species from Sarawak, Malaysian Borneo. Hin, Ooi Im; Yeng, Wong Sin // Willdenowia;2014, Vol. 44 Issue 2, p241 

    Ooi I. H. & Wong S. Y.: Scaphochlamys stenophylla (Zingiberaceae): a new species from Sarawak, Malaysian Borneo. - Willdenowia 44: 241-245. 2014. - Version of record first published online on 8 July 2014 ahead of inclusion in August 2014 issue; ISSN 1868-6397; © 2014 BGBM Berlin-Dahlem. DOI:...

  • Puya bravoi (Bromeliaceae), a New Species From North-Western Argentina. Aráoz, Ezequiel; Grau, Alfredo // Journal of the Bromeliad Society;Sep/Oct2008, Vol. 58 Issue 5, p199 

    The article features the Puya bravoi, a new species of Puya Molina or Bromeliaceae, Pitcairnioideae from northwestern Argentina. About 200 species are included in the Puya Molina genus and are distributed along the Andean cordillera, from Costa Rica to Chile and Northwest Argentina. Puya Bravoi...

  • Guzmania vinacea, a new species from northeastern Peru. Luther, Harry E.; Norton, Karen F. // Journal of the Bromeliad Society;Sep/Oct2008, Vol. 58 Issue 5, p203 

    The article features the Guzmania vinacea a new species of the bromeliad genus Guzmania from northeastern Peru. Over 200 species are included in the genus that are primarily distributed at moderate elevations of 500 to 1500 meters in the Andean region. The Guzmania vinacea plant features a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics