Meibomia guaranitica var. microcarpa Schindl., Repert., 2014

Lima, Laura Cristina Pires, Queiroz, Luciano Paganucci De, Tozzi, Ana Maria Goulart De Azevedo & Lewis, Gwilym Peter, 2014, A Taxonomic Revision of Desmodium (Leguminosae, Papilionoideae) in Brazil, Phytotaxa 169 (1), pp. 1-119 : 60-62

publication ID

https://doi.org/ 10.11646/phytotaxa.169.1.1

DOI

https://doi.org/10.5281/zenodo.5154488

persistent identifier

https://treatment.plazi.org/id/537EF179-FFAF-457B-FF3B-28F9FC6AFC19

treatment provided by

Felipe

scientific name

Meibomia guaranitica var. microcarpa Schindl., Repert.
status

sp. nov.

18. Desmodium membranifolium View in CoL L. C. P. Lima, A. M. G. Azevedo & L. P. Queiroz, status et nom. nov., non Rusby (1927). Meibomia guaranitica var. microcarpa Schindl., Repert. View in CoL Spec. Nov. Regni Veg. 20: 149. 1924. Lectotype (designated here):— PARAGUAY. San Luis: zwischen Flüssen Apa und Aquidaban, K. Fiebrig 5145 (lectotype G!, isolectotypes BM!, K!, E!). Fig. 20 View FIGURE 20 .

Erect, branched subshrub, 0.2–1.5 m tall, with a xylopodium; stems not virgate, not slender, cylindrical, striate, glabrescent or sparsely or densely puberulous-uncinate, not glaucous; internodes 2–4 cm long. Stipules (3–)4–8 × 1–2 mm, ovate-lanceolate, auriculate, semi-amplexicaul, inserted perpendicularly at the base of the leaf petiole, free from each other, apex caudate, margin ciliate, tomentose, veins inconspicuous, caducous; auricle 2–3 mm long. Leaves unifoliolate; petiole 15–50 mm long, cylindrical, sulcate, sparsely uncinate; stipels 3–6 mm long, subulate, margin straight, sparsely tomentose, persistent; leaflet discolorous, membranaceous, venation eucamptodromous, primary, and secondary veins prominent, tertiary and quaternary veins flush on the abaxial surface, indumentum tomentose on the primary, secondary and tertiary veins on the abaxial surface, adaxial surface puberulous-uncinate, uncinate hairs covering both surfaces, leaflet 7–11 × 4–9.8 cm, orbicular, ovate or rhombic, base obtuse or cuneate, apex subacute or obtuse. Inflorescence a terminal pseudoraceme or paniculate; the main axis longer than the adjacent leaves, 9.5–30 cm long, sparsely or densely hirsute–uncinate, 2–3 flowers per node; primary bract 6–10 mm long, triangular, margin straight, tomentose on the outer surface, persistent, veins conspicuous on the outer surface; secondary bract ca. 1.5 mm long, ovate, margin straight, hispid on the outer surface, caducous, veins conspicuous on the outer surface; pedicel 1–2 mm long, sparsely hispid or sericeous–uncinate. Flowers 4–5 mm long; calyx bilabiate, tube campanulate, ca. 1 mm long, tomentose or sericeous on the outer surface; upper lip bifid, slightly fused, the 2 teeth joined for a ca. ¾ of their length, acute, 0.2 mm long; lower lip trifid, lateral tooth ovate- lanceolate, ca. 1 mm long, central tooth lanceolate, ca. 1 mm long; corolla purple the 2 teeth joined for ca. ¾ of their length, standard 4–5 × 3 mm, obovate, apex obcordate, maculate at the base, claw ca. 0.1 mm long; wing petals 4–5 × 1.5–2 mm, obovate, apex obtuse, without callosities, claw 0.5–0.8 mm long; keel petals 4–5 × 1 mm, narrowly obovate, apex subacute, with callosities, claw 0.8–1 mm long; androecium monadelphous, ca. 4 mm long, vexillary stamen partially fused with the other from the base ca. 2 mm long; ovary 3–4 mm long, glabrous subsessile. Loment 0.8–1.6 cm long, stipe 1–2 mm long, glabrescent, isthmus central, both margins sinuate; articles uniform 3–6, 2–3 × 1–2 mm, terminal obovate or orbicular, the another articles rhombic, tortuous, indehiscent, subcoriaceous, veins inconspicuous, densely uncinate. Seed ca. 1.5 × 1.5 mm, ovate, hilum central.

Selected specimens examined:— BRAZIL. Goiás: Caldas Novas: Parque Estadual Serra de Caldas Novas , 26 April 2009, fl., fr., L . C . P. Lima et al. 629 ( HUEFS); Campo Belos: fazenda Santa Maria, próximo a Mandassaia, 12 May 2000, fl., fr., G . Hatschbach et al. 70983 ( CTES, MBM). Mato Grosso: Cuiabá: estrada Cuiabá-Chapada, próximo ao rio dos Peixes, 2 February 1978, fr., M . Macedo & S. Assumpção 756 ( INPA). Minas Gerais: Francisco de Sá : s. loc., May 1993, fl., M . L .Gavilanes 5771 ( PAMG).

Distribution and Ecology:— South America: in Paraguay, with ocurrence in Brazil recorded for the first time. D. membranifolium occurs in the States of Goiás, Mato Grosso, and Minas Gerais. Collected in areas of Cerrado in vegetations of gallery and other riparian forests.

Conservation Assessment:— Least Concern (LC), not endangered ( IUCN 2001).

Phenology:— flowering and fruiting from March to June.

Etymology:— from the Latin membranous (= membranaceus) + folium (= leaf), a reference to the membranaceous leaves.

Common Name:— carrapicho.

Taxonomic notes:— unifoliolate membranaceous leaves, persistent primary bracts, and tortuous fruit articles are characters that help in the recognition of this species. Desmodium membranifolium can appear similar to D. glabrescens due to similar ovate leaflets, paniculate inflorescences, and tortuous fruit articles. However, D. membranifolium is easily distinguished in always having unifoliolate leaves (vs. trifoliate in D. glabrescens ), discolorous leaflets (vs. concolorous), and flowers 4–5 mm long (vs. 8–10 mm long).

Desmodium membranifolium shares morphological characteristics with D. distortum including leaflet shape (long-obovate), flower length (4–5 mm long), and tortuous articles, but it differs by always having unifoliolate leaves (vs. rarely unifoliolate in D. distortum ) and triangular primary bracts 6–10 mm long (vs. ovate-lancolate and 2–4 mm long).

60 • Phytotaxa 169 (1) © 2014 Magnolia Press

LIMA ET AL. DESMODIUM (LEGUMINOSAE, PAPILIONOIDEAE ) IN BRAZIL

Phytotaxa 169 (1) © 2014 Magnolia Press • 61

Most taxa in Meiobomia were transferred to Desmodium , with the exception of some names, such as Meibomia guaranitica var. microcarpa Schindl. This should not be considered a variety of Desmodium guaraniticum (Chodat & Hassl.) Malme , nor a synonym, because ecological and morphological differences exist to differentiate them ( Table 3). As a consequence, the elevation of Meibomia guaranitica var. microcarpa to species rank is proposed here.

In accordance with article 11.2 of the ICBN ( McNeill et al. 2006), no name has priority over another published at a different rank, which justifies a proposed new name for Meibomia guaranitica var. microcarpa . With that in mind, we are proposing a new combination for Meibomia microcarpa Rusby (see the next taxon description), which is a taxon distinct from Meibomia guaranitica var. microcarpa .

L

Nationaal Herbarium Nederland, Leiden University branch

C

University of Copenhagen

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

A

Harvard University - Arnold Arboretum

M

Botanische Staatssammlung München

G

Conservatoire et Jardin botaniques de la Ville de Genève

K

Royal Botanic Gardens

BM

Bristol Museum

E

Royal Botanic Garden Edinburgh

HUEFS

Universidade Estadual de Feira de Santana

CTES

Instituto de Botánica del Nordeste

MBM

San Jose State University, Museum of Birds and Mammals

S

Department of Botany, Swedish Museum of Natural History

INPA

Instituto Nacional de Pesquisas da Amazonia

PAMG

Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG)

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Fabales

Family

Fabaceae

Genus

Meibomia

Loc

Meibomia guaranitica var. microcarpa Schindl., Repert.

Lima, Laura Cristina Pires, Queiroz, Luciano Paganucci De, Tozzi, Ana Maria Goulart De Azevedo & Lewis, Gwilym Peter 2014
2014
Loc

Meibomia guaranitica var. microcarpa

Schindl. 1924: 149
1924
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF