Thelypteris sylva-nipponica, a new allotetraploid species in the Parathelypteris group (Thelypteridaceae)

A broad-leaved form of Thelypteris nipponica, usually called “var. borealis”, was identified as an allotetraploid originated from hybridization between two diploid species T. nipponica and T. musashiensis based on chromosome number, plastid rbcL sequence and nuclear gapCp “short” sequence. We found that the original material of Thelypteris nipponica var. borealis morphologically corresponds not to the plant widely known as “var. borealis” but to diploid T. nipponica. Therefore, we described the tetraploid distributed in Japan and China as a new species, Thelypteris sylva-nipponica.

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Aspidistra revoluta, a new species from limestone areas in Chongqing, China

Phytotaxa ◽

10.11646/phytotaxa.257.3.6 ◽

2016 ◽

Vol 257 (3) ◽

pp. 280 ◽

Cited By ~ 2

Author(s):

Hao Zhou ◽

Si-rong Yi ◽

Qi Gao ◽

Jie Huang ◽

Yu-jing Wei

Keyword(s):

New Species ◽

Chromosome Number ◽

Average Length ◽

Chromosome Complement ◽

Pollen Grains ◽

The Other ◽

Morphological Comparison ◽

Chongqing Municipality ◽

Karyotype Asymmetry ◽

A New Species

Aspidistra revoluta (Asparagaceae) is described and illustrated as a new species from limestone areas in southern Chongqing Municipality, China. The new species can be distinguished from the other Aspidistra species by its unique umbrella-like pistil with large revolute stigma lobes that bent downwards and touch the base of the perigone. A detailed morphological comparison among A. revoluta, A. nanchuanensis and A. carnosa is provided. The pollen grains of A. revoluta are subspherical and inaperturate, with verrucous exine. The chromosome number is 2n = 38, and the karyotype is formulated as 2n = 22m + 6sm + 10st. The average length of chromosome complement is 4.50 μm, and the karyotype asymmetry indexes A1 and A2 are respectively 0.37±0.03 and 0.49±0.01.

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Allium kyrenium (Amaryllidaceae), a new species from Northern Cyprus

Phytotaxa ◽

10.11646/phytotaxa.213.3.8 ◽

2015 ◽

Vol 213 (3) ◽

pp. 282 ◽

Cited By ~ 2

Author(s):

GIANPIETRO GIUSSO DEL GALDO ◽

CRISTIAN BRULLO ◽

Salvatore Brullo ◽

CRISTINA SALMERI

Keyword(s):

New Species ◽

Somatic Chromosome ◽

Eastern Mediterranean ◽

Conservation Status ◽

Diploid Species ◽

Mediterranean Area ◽

Somatic Chromosome Number ◽

Northern Cyprus ◽

Eastern Mediterranean Area ◽

A New Species

Allium kyrenium, a new species of Allium sect. Codonoprasum, is described and illustrated from northern Cyprus. It is a very circumscribed geophyte growing on the calcareous cliffs of the Kyrenia range. This diploid species, with a somatic chromosome number 2n = 16, shows close morphological relationships with A. stamineum, a species complex distributed in the eastern Mediterranean area. Its morphology, karyology, leaf anatomy, ecology, conservation status and taxonomical relationships with the allied species belonging to the A. stamineum group are examined.

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A new species of Acianthera (Pleurothallidinae, Orchidaceae) from Brazil

Phytotaxa ◽

10.11646/phytotaxa.402.1.4 ◽

2019 ◽

Vol 402 (1) ◽

pp. 29

Author(s):

JAN PONERT ◽

ZUZANA CHUMOVÁ ◽

TEREZIE MANDÁKOVÁ ◽

PAVEL TRÁVNÍČEK

Keyword(s):

New Species ◽

Chromosome Number ◽

Molecular Phylogeny ◽

Genome Size ◽

Size Estimation ◽

Abaxial Side ◽

Phylogenetic Placement ◽

A New Species ◽

Half Length

Acianthera sudae is newly described based on cultivated material from Brazil. It belongs to section Cryptophoranthae and differs from all others in this group by the larger flowers and sepals fused apically for more than half length, and a green-brown abaxial side of sepals with purple dots. Chromosome number (2n = 40) and genome size estimation (1C-value = 1.18 pg) is provided and its phylogenetic placement under the genus is supported with reconstruction of a molecular phylogeny using nuclear ribosomal ITS.

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A new species of Gomesa (Oncidiinae, Orchidaceae) from inselbergs in Brazilian caatinga: morphological and karyological evidence

Phytotaxa ◽

10.11646/phytotaxa.374.2.6 ◽

2018 ◽

Vol 374 (2) ◽

pp. 147 ◽

Cited By ~ 1

Author(s):

JOEL M. P. CORDEIRO ◽

FELIPE NOLLET ◽

MARIA TERESA BURIL ◽

MARK W. CHASE ◽

LEONARDO P. FELIX

Keyword(s):

New Species ◽

Chromosome Number ◽

Geographical Distribution ◽

Related Species ◽

Species Differences ◽

Flower Morphology ◽

Closely Related Species ◽

Restricted Distribution ◽

A New Species

We describe a new species of Gomesa (Oncidiinae, Orchidaceae), Gomesa caatingana, with restricted distribution on caatinga inselbergs in Paraíba and Pernambuco States, Brazil. Morphological and karyological characters of the new species were compared with those of Gomesa flexuosa, which is morphologically the most closely related species. Differences in geographical distribution, habit, flower morphology and chromosome number support description of this new species.

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Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from South America

Phytotaxa ◽

10.11646/phytotaxa.186.5.4 ◽

2014 ◽

Vol 186 (5) ◽

pp. 271 ◽

Cited By ~ 1

Author(s):

Maria Mercedes Sosa ◽

Massimiliano Dematteis

Keyword(s):

New Species ◽

Diploid Species ◽

Corolla Tube ◽

Distribution Map ◽

Corolla Length ◽

The North ◽

Misiones Province ◽

Northeastern Argentina ◽

A New Species ◽

Scanning Electron

Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province (Argentina). It is a diploid that has been traditionally treated under Stemodia hyptoides, which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the polyploid S. hyptoides by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographical data, some evolutionary considerations are inferred.

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Sinosenecio ovatifolius (Asteraceae), a new species from Guangxi, China

Phytotaxa ◽

10.11646/phytotaxa.460.2.5 ◽

2020 ◽

Vol 460 (2) ◽

pp. 149-159

Author(s):

CHUN-YU ZOU ◽

YAN LIU ◽

YING LIU

Keyword(s):

New Species ◽

Chromosome Number ◽

Sequence Divergence ◽

Surface Feature ◽

Well Differentiated ◽

Micromorphological Characters ◽

Close Relatives ◽

A New Species

Sinosenecio ovatifolius (Asteraceae, Senecioneae), a new species occurring in northeastern Guangxi, China, is illustrated and de-scribed with report on its floral micromorphological characters, achene surface feature and chromosome number. The new spe-cies is phylogenetically close to S. guangxiensis, S. jiangxiensis, S. jiuhuashanicus, S. latouchei, S. peltatus, S. saxatilis, and S. wuyiensis. Morphology and sequence divergence of the nrITS region indicate that S. ovatifolius is well differentiated from its close relatives. It most closely resembles S. guangxiensis and S. latouchei in the scapigerous habit, leaf texture and indumentum, but differs markedly in the ovate lamina, inconspicuously undulate-dentate margin and glabrous and smooth achene surface.

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Changnienia malipoensis, a new species from China (Orchidaceae; Epidendroideae; Calypsoeae)

Phytotaxa ◽

10.11646/phytotaxa.115.2.4 ◽

2013 ◽

Vol 115 (2) ◽

pp. 55 ◽

Cited By ~ 3

Author(s):

DONG-HUI PENG ◽

ZHONG-JIAN LIU ◽

JUN-WEN ZHAI

Keyword(s):

New Species ◽

Chromosome Number ◽

Yunnan Province ◽

Central China ◽

Morphological Evidence ◽

Monotypic Genus ◽

Phylogenetic Placement ◽

A New Species

Changnienia Chien (1935: 89) is a monotypic genus of tribe Calypsoeae endemic to eastern and central China (Chen et al. 1999, 2009, Freudenstein 2005), previously with only the species C. amoena Chien (1935: 90), which was listed in the Chinese Redbook in 1992 (Fu 1992). Yang & Zhu (1984) reported a chromosome number for it of 2n=46. Sun et al. (2006) observed pollination and found that Bombus trifasciatus was its pollinator. Zhai et al. (2013) confirmed the phylogenetic placement of this species as a member of tribe Calypsoeae (sensu Pridgeon et al. 2005). A new species of Changnienia is described and illustrated here based on molecular and morphological evidence. It is discovered in Malipo, Yunnan Province, China.

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Amberboa maroofii (Asteraceae, Cardueae–Centaureinae), a new species from Kurdistan, Iran

Phytotaxa ◽

10.11646/phytotaxa.195.2.6 ◽

2015 ◽

Vol 195 (2) ◽

pp. 171

Author(s):

Kazem Negaresh

Keyword(s):

New Species ◽

Small Area ◽

Diploid Species ◽

Distribution Range ◽

A New Species

Amberboa maroofii is described and illustrated as a new species from Kurdistan Province, W Iran. It is a diploid species (2n = 2x = 32) and morphologically most similar to A. glauca. The new species is also compared with A. moschata, A. sosnovskyi and A. zanjanica. Its distribution range covers a small area; it grows on clay at elevations of 1400–1800 m.

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Lessingianthus concepcionis (Asteraceae, Vernonieae), a new octoploid species endemic to northern Paraguay

Phytotaxa ◽

10.11646/phytotaxa.265.3.7 ◽

2016 ◽

Vol 265 (3) ◽

pp. 267

Author(s):

MARIA BETIANA ANGULO ◽

MASSIMILIANO DEMATTEIS

Keyword(s):

New Species ◽

Chromosome Number ◽

Glandular Trichomes ◽

A New Species

Lessingianthus concepcionis, a new species from northern Paraguay is described and illustrated. The new species has a certain resemblance to L. niederleinii but can be easily separated by the combination of leaves with denticulate and revolute margins, tomentose beneath, involucre with 6–7 series of phyllaries, glandular trichomes on the corolla lobes, and the chromosome number 2n=8x=128.

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