FIGURE 4 - uploaded by Fernanda Schmidt Silveira
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Mimosa terribilis details: (a) aculeate branches; (b) detail of puberulent indumentum; (c) spicule and paraphyllidia; (d) leaflet, ventral face; and (e) leaflet, dorsal face.
Source publication
Mimosa terribilis (Leguminosae, Mimosoideae), a new subshrub species, endemic from Pampa grasslands of Rio Grande do Sul State in Southern Brazil, is described and illustrated. The new species is morphologically close to Mimosa ramosissima with respect to its subshrub habit, recurved aculei, stipules 1-nerved, calyx narrowly campanulate, infloresce...
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Citations
... The major centres of richness and endemism of Mimosa are located in central and northeastern Brazil, subtropical South America (Paraguay, Argentina, Uruguay, and southern Brazil), and Mexico (Barneby 1991, Simon et al. 2011, where several new species of Mimosa have been found in recent years (e.g. Simon et al. 2010, Savassi-Coutinho et al. 2012, Morales et al. 2012, Santos-Silva et al. 2013, Grings & Ribas 2013, Dutra & Garcia 2013, Borges et al. 2014, Grether & Steinmann 2014, Grether & Martinez-Bernal 1996, Jordão et al. 2014, 2021, Silveira et al. 2016, Mendes et al. 2021a, 2021b. ...
Four new species of Mimosa series Cordistipulae (Leguminosae: Caesalpinioideae: Mimosoid clade) are described from Bahia state, Brazil: M. crassifolia, M. bahiana and M. confusa from rupestrian grasslands (campo rupestre vegetation) of the Chapada Diamantina mountain range, and M. melosa from inland dry scrub on sand dunes of the São Francisco River. We provide illustrations, comments on the geographical distribution, preliminary conservation assessments, and morphological affinities.
... A recent estimation indicates there are approximately 600 species in the genus (Sauter 2019). However, this number may change because new species are continuously being described, the genus has been revised, taxa have been placed in synonymy, or infraspecific taxa have been elevated to species rank (Grether 2000; Morales and Fortunato 2010, 2016S€ arkinen et al. 2011;Santos-Silva and Tozzi 2012;Savassi-Coutinho et al. 2012;Dutra and Garcia 2013a, 2013b, 2013cGrings and Ribas 2013;Santos-Silva et al. 2013Borges et al. 2014Borges et al. , 2017Jordão et al. 2014Jordão et al. , 2017Jordão et al. , 2018Silveira et al. 2016). ...
... Moreover, several new Mimosa taxa have been described for Brazil since 2000 (e.g. Simon et al. 2010;Savassi-Coutinho et al. 2012; Morales et al. 2012Morales et al. , 2013Santos-Silva et al. 2013;Grings and Ribas 2013;Dutra andGarcia 2013, 2014;Borges et al. 2014;Schmidt-Silveira et al. 2016). However, some gaps in the taxonomic knowledge of Brazilian Mimosa still remain, especially concerning the description of its complex diversity in southern Brazilian Pampa biome. ...
Mimosa cerifera, a new species from M. sect. Mimosa ser. Mimosa subser. Sparsae, is described and illustrated. This species is distinguished by a combination of characters, including the presence of a white-blue wax that covers all structures, fruits moniliform, non-planecompressed, glabrous, and articulated, and bracts persistent. Furthermore, Mimosa cerifera is only found in grasslands of the Pampa biome near Quevedos city in southern Brazil. We recommend that the species be evaluated as Critically Endangered according to the criteria B1 ab (i, iii, iv, v) + 2b (ii, iii); C2 a (ii).
... Although Mimosa was studied extensively by Bentham (1841Bentham ( -1842Bentham ( , 1875Bentham ( , 1876 and fully revised and monographed by Barneby (1991), many new taxa have been described since then (e.g. Simon & al. 2010;Morales & al. 2012;Savassi-Coutinho & al. 2012;Dutra & Garcia 2013;Santos-Silva & al. 2013;Schmidt Silveira, & al. 2016;Jordão & al. 2017). Moreover, some gaps remain open in Mimosa (e.g. ...
During a revision of Mimosa sect. Mimosa from southern Brazil, we noticed that M. adpressa Hook. & Arn., a species of M. subser. Obstrigosae (Benth.) Barneby, has never been typified and that M. subinermis Benth. has long been considered a synonym of M. rupestris Benth. We designate here a specimen from Argentina, collected by Tweedie and deposited in the Kew herbarium, as the lectotype of M. adpressa. Furthermore, we show that M. subinermis is readily distinguished from M. rupestris by many morphological features (e.g. habit, calyx type, fruits), supporting our hypothesis that M. subinermis is a distinct species.
... Mimosa Linnaeus (1753: 516) comprises a monophyletic group and is the fifth largest genus of Leguminosae with over 540 species and approximately 225 varieties (Barneby 1991, Lewis et al. 2005, Bessega et al. 2008, Simon et al. 2011). In addition, several new species of Mimosa have been described in the past few years (Simon et al. 2010;Morales et al. 2013, Santos-Silva et al. 2013, Borges et al. 2014, Dutra & Garcia 2014a, Grether & Steinmann 2014, Jordão et al. 2014, Silveira et al. 2016. Mimosa is distributed predominantly in the Neotropics, with centers of diversity in central Brazil, subtropical South America, and Mexico, and is most diverse in open vegetation, in low to high altitude forests, savannas, deserts, grasslands, and agricultural and disturbed areas (Barneby 1991, Simon et al. 2011. ...
Mimosa is a very large genus with more than 540 species, which are distributed mainly in the Neotropics and are especially diverse in the Cerrado, where the genus shows high rates of endemism. The Serra do Cabral mountain range, which is part of the Espinhaço mountain range, contains representative remnants of the Cerrado and is a very important area for the genus, where at least 20 taxa of Mimosa are reported. Unfortunately, it is a threatened and over-exploited region. Here we describe a new narrow endemic species from the Serra do Cabral, Mimosa osmarii, that shows affinities with M. paucifolia var. scoparia, a sympatric taxon. The conservation status of M. osmarii was assessed as vulnerable.
We compiled a vascular plant species list for the Río de la Plata grassland ecoregion, one
of the largest continuous grassland ecosystems in the Americas. Our list is based on existing regional plant lists, online databases and published literature, is taxonomically verified and is complemented by additional information on species distribution in the three countries (Argentina, Brazil and Uruguay) and on the origin of the species. We compiled 4864 accepted species names belonging to 194 families. About eight percent of the species are endemic; naturalized non-native species comprise slightly > 10% of the dataset.
A newsletter to promote communication among research scientists concerned with the systematics of the Leguminosae/Fabaceae Issue 63, Year 2016
