scholarly journals Two new species of Lejeuneaceae tribe Lejeuneeae (Marchantiophyta) from Colombia

2019 ◽  
Vol 68 (1-2) ◽  
pp. 29-36
Author(s):  
S. Robbert Gradstein ◽  
Anna Luiza Ilkiu-Borges
Keyword(s):  
New Species ◽  
Vegetative Reproduction ◽  
Western Cordillera ◽  
Colombian Andes ◽  
Small Papilla ◽  
The Caribbean ◽  
The Rich ◽  
Dark Green ◽  
Central Cordillera ◽  
Light Green

Abstract We describe the new liverwort species Lejeunea ryszardii from montane rainforest in the Central Cordillera of Colombia (Dept. Quindío) and Rectolejeunea halinae from submontane rainforest in the Western Cordillera (Dept. Risaralda). Both species stand out by copious vegetative reproduction via caducous leaves. Lejeunea ryszardii resembles the Caribbean L. paucidentata in the leaf lobes with toothed margins and a narrow base but strikingly differs from the latter species in: 1) leaf margins with mamillose cells, which are sometimes crowned by a small papilla, and with scattered rhizoids with or without a tooth-like base; 2) lobules with narrowly elongate, curved, sharp tooth; 3) stem epidermis brownish and somewhat thick-walled; 4) copious production of caducous leaf lobes. Moreover, L. ryszardii is dark green to brown in color and probably dioicous while L. paucidentata is light green and autoicous. Rectolejeunea halinae resembles the neotropical R. flagelliformis in having ciliate caducous leaves but clearly differs from the latter in the pointed leaf tips, the presence of ocelli in underleaves, and the flagelliform shoots with flat, entire-margined underleaves. The discovery of these new species adds two further endemic taxa to the rich bryophyte flora of the Colombian Andes.

scholarly journals A remarkable new species of Cheilolejeunea (Marchantiophyta: Lejeuneaceae) from Colombia.

2017 ◽  
Vol 52 (2) ◽  
pp. 325-330 ◽  
Author(s):  
S. Robbert Gradstein ◽  
M. Elena Reiner-Drehwald
Keyword(s):  
New Species ◽  
Vegetative Reproduction ◽  
Parallel Evolution ◽  
Plant Leaf ◽  
Western Cordillera ◽  
Endemic Taxon ◽  
The Rich ◽  
Rich Flora

We describe the new liverwort species Cheilolejeunea schiavoneana M.E.Reiner & Gradst. from submontane rainforest in the Western Cordillera of Colombia. The new species is related to C. adnata (C. sect. Cheilolejeunea) but differs by larger plant, leaf and underleaf size, robust stems, a 5-6 cells wide ventral merophyte, abundance of microphyllous branches, and vegetative reproduction by caducous leaf lobes produced on flagelliform shoots. The latter feature is characteristic of the genus Rectolejeunea and its presence in Cheilolejeunea is apparently a case of parallel evolution. The discovery of C. schiavoneana adds a further endemic taxon to the rich flora of the Colombian Western Cordillera. Key

Neobartsia matuy (Orobanchaceae), a new species from the Colombian Andes

Phytotaxa ◽  
2019 ◽  
Vol 424 (2) ◽  
pp. 87-96
Author(s):  
MARIA DEL PILAR MALAGON ◽  
HUMBERTO MENDOZA-CIFUENTES ◽  
SOFIA GÓMEZ-PARRA ◽  
SIMON URIBE-CONVERS
Keyword(s):  
New Species ◽  
Sea Level ◽  
Related Species ◽  
Corolla Tube ◽  
Glandular Hairs ◽  
Yellowish Green ◽  
Colombian Andes ◽  
Floral Bracts ◽  
Light Green ◽  
A New Species

A new species of Neobartsia endemic to the eastern Andes of Colombia is described, illustrated, and compared with related species. This species belongs to section Orthocarpiflorae and morphologically it is characterized by having floral bracts light green with glandular hairs, corolla yellowish green, the galea cucullate, longer than the lip, retrorsely glandular-puberulous, the lip three-lobed, glabrous and the corolla tube decurved. Currently, it is only known from two localities in the Colombian department of Boyacá, where it grows in the páramo ecosystem between 3528 and 3639 meters above sea level on rocky soil with grassy vegetation.

Drymonia betancurii (Gesneriaceae), a new species from northwestern Colombia

Phytotaxa ◽  
2015 ◽  
Vol 221 (1) ◽  
pp. 77 ◽  
Author(s):  
Laura Clavijo ◽  
John Littner Clark
Keyword(s):  
New Species ◽  
Leaf Surface ◽  
Lower Surface ◽  
Colombian Andes ◽  
White Spots ◽  
The Pacific ◽  
Dark Green ◽  
A New Species

A new species of Gesneriaceae from the Pacific slopes of the Colombian Andes is described and illustrated. The new species, Drymonia betancurii, is differentiated from other congeners by the following combination of characters: upper leaf surface with papillose-hispid trichomes, dark green and often covered with white spots; lower surface pitted; and corolla lobes orange-red with white to yellow margins.

Two new species of the water scavenger beetle genus Hemiosus Sharp Coleoptera: Hydrophilidae) from Colombian Andes

Zootaxa ◽  
2019 ◽  
Vol 4565 (4) ◽  
pp. 493 ◽  
Author(s):  
LIZA M. GONZÁLEZ-RODRÍGUEZ ◽  
ANDREA L. GARCÍA-HERNÁNDEZ ◽  
BRUNO CLARKSON
Keyword(s):  
New Species ◽  
Habitat Characteristics ◽  
Median Lobe ◽  
Colombian Andes ◽  
Coloration Pattern ◽  
Two New Species ◽  
Basal Half ◽  
Central Cordillera

Two new species of Hemiosus (Coleoptera: Hydrophilidae) from the central cordillera of the Colombian Andes are described. Hemiosus molanoi González-Rodríguez & García-Hernández sp. nov. and H. quindiensis González-Rodríguez & Clarkson sp. nov. are described based in 56 adult specimens collected in river-associated sandy puddles (26 specimens of H. molanoi sp. nov.) and temporary puddles near crops (26 specimens of H. quindiensis sp. nov.). Both species are identified mainly by characteristics of the aedeagus: Hemiosus molanoi sp. nov. has subtriangular parameres, median lobe shorter than parameres and longer than appendices which are acuminate and phallobase shorter than parameres, strongly asymmetrical in basal two-fifths; H. quindiensis sp. nov. has parameres gradually tapering towards rounded apices, median lobe shorter than parameres and longer than appendices which are acuminate and phallobase shorter than parameres, strongly asymmetrical in basal half. Dorsal coloration pattern, overall shape of the meso- and metaventral process and abdominal ventrites are also informative to distinguish the new species from remaining described Hemiosus. Diagnoses, illustrations and habitat characteristics are provided. 

A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China

Zootaxa ◽  
2020 ◽  
Vol 4768 (1) ◽  
pp. 112-128
Author(s):  
ZENING CHEN ◽  
JIANPING YU ◽  
GERNOT VOGEL ◽  
SHENGCHAO SHI ◽  
ZHAOBIN SONG ◽  
...  
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
Common Species ◽  
Wide Distribution ◽  
Ecological Data ◽  
Golden Yellow ◽  
Dark Green ◽  
Light Green ◽  
Significant Genetic Divergence ◽  
A New Species

The white-lipped tree viper, Trimeresurus albolabris Gray, is one of the most common species of the genus Trimeresurus with a wide distribution from India eastwards to China and southwards to Indonesia. However, this species was previously split into five geographical clades with significant genetic divergence. Recent surveys in Yingjiang County, Yunnan Province, China resulted in the discovery of one cryptic species of the subgenus Trimeresurus. Combining molecular, morphological and ecological data, we describe it as a new species Trimeresurus caudornatus sp. nov. The new species differs from other Trimeresurus species by a combination of the following characteristics: (1) Head and body generally dark green, postocular stripes absent in both genders, upper labials light green; (2) ventrolateral stripe faint green yellow, present on the first row of DSR in both genders; (3) iris golden yellow in both genders; (4) dorsal tail mostly dark red, lateral and ventral green; an orange red stripe along the ventral part of the tail; (5) DSR 21/22 –21–15, VEN 161–163, SC 52–72; (6) first upper labial partially fused to the nasal. The new species was shown to be a strongly supported monophyletic group (BPP 100%) and sister to T. septentrionalis. The uncorrected pairwise distances of mitochondrial gene Cytb between the new species and other species of the subgenus Trimeresurus, ranging from 0.059 (T. septentrionalis) to 0.134 (T. kanburiensis). 

scholarly journals Nephelaphyllum maliauensis (Orchidaceae; Collabiinae), a new species from the Maliau Basin, Sabah, Borneo, with a discussion of the taxonomic identities of N. pulchrum, N. latilabre and N. flabellatum

Phytotaxa ◽  
2018 ◽  
Vol 336 (1) ◽  
pp. 89
Author(s):  
KENJI SUETSUGU ◽  
MONICA SULEIMAN ◽  
HIROKAZU TSUKAYA
Keyword(s):  
New Species ◽  
Forest Floor ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Deep Well ◽  
Dry Seasons ◽  
Dark Green ◽  
Small Genus ◽  
Light Green ◽  
A New Species

Nephelaphyllum is a relatively small genus, containing only 11 species distributed from China through Indochina to Thailand and from Peninsular Malaysia eastwards through Indonesia to the Philippines (Chan et al. 1994). The species are easily recognised, even when not in flower, by their characteristic light green or yellowish leaves and dark green venation and blotches (Comber 1990). All species grow in deep, well-drained humus in dark conditions on the forest floor, especially in areas without severe dry seasons (Comber 1990).

Espeletia restricta (Millerieae, Asteraceae), a new species from the páramos of northern Colombia

Phytotaxa ◽  
2020 ◽  
Vol 433 (4) ◽  
pp. 288-294
Author(s):  
FERNANDO ALZATE ◽  
SEBASTIÁN GIRALDO
Keyword(s):  
New Species ◽  
Critically Endangered ◽  
Western Cordillera ◽  
Endemic Taxon ◽  
Conservation Concern ◽  
Central Cordillera ◽  
A New Species

An intensive exploration of the páramos ecosystem on northwestern Colombia allowed the discovery of a new species of Espeletia (Millerieae: Asteraceae), E. restricta. Espeletia is an endemic taxon to the páramos of Colombia, Venezuela and Ecuador, generally found above 3000 m of elevation. Espeletia restricta has a very narrow distribution limited to the northern Central Cordillera of Los Andes. The new species is similar to Espeletia occidentalis, species occurring in the Central and Western Cordillera, from which it differs in  the size of its synflorescences relative to the rosette length (less than 1.5 times longer than the rosette vs. 2–3 times longer than the rosette) and indument colour (yellowish vs. greenish-white). The new species was assessed Critically Endangered (CR) due to the small size of its population and the restricted nature of its occurrence, which makes this taxon of great conservation concern.

Begonia titoevangelistae (sect. Baryandra, Begoniaceae) a new species from Catanduanes Island, the Philippines

Phytotaxa ◽  
2016 ◽  
Vol 282 (4) ◽  
pp. 273 ◽  
Author(s):  
DANILO N. TANDANG ◽  
ROSARIO R. RUBITE ◽  
RAUL T. ANGELES JR. ◽  
MARGARET C. DE GUZMAN
Keyword(s):  
New Species ◽  
The Philippines ◽  
Leaf Margin ◽  
Abaxial Surface ◽  
International Union ◽  
Acuminate Apex ◽  
Dark Green ◽  
Lobed Leaf ◽  
Light Green ◽  
A New Species

Begonia titoevangelistae from Nahulugan Falls, Gigmoto, Catanduanes Island is described as a new species endemic to the Philippines. It resembles Begonia neopurpurea but is distinguished by the variegated leaves where the veins and midrib are dark green to almost black contrasting with light green interveins in the adaxial surface. In the abaxial surface, the veins are maroon contrasting with cream interveins, and its wide obliquely ovate leaf is elongated with shallowly undulate and minutely lobed leaf margin and long acuminate apex. Based on International Union for the Conservation of Nature red list criteria, B. titoevangelistae was assessed to be critically endangered, since it consists of one population with 300 individuals on a 100 m area around the waterfalls, which is being developed into a tourist spot.

scholarly journals Comment on “Emplazamiento del magmatismo Paleoceno-Eoceno bajo un régimen transtensional y su evolución a un equilibrio dinámico en el borde occidental de Colombia” by Grajales et al., Rev. Mex. Cienc. Geol. (2020), 37(3), 250-268

2021 ◽  
Vol 38 (2) ◽  
pp. 141-147
Author(s):  
Ángel A. Barbosa-Espitia ◽  
George D. Kamenov ◽  
David A. Foster ◽  
Sergio A. Restrepo-Moreno ◽  
Andrés Pardo-Trujillo ◽  
...  
Keyword(s):  
Alternative Interpretation ◽  
Geochemical Data ◽  
Northern Andes ◽  
The North ◽  
Western Cordillera ◽  
Plausible Model ◽  
The Caribbean ◽  
Subduction System ◽  
Central Cordillera ◽  
North Western

Grajales et al. (2020) reviewed geochronological and geochemical data from Paleogene volcanic and plutonic rocks outcropping in the Panama-Choco Block (north western Cordillera) and southern Western Cordillera, as well as the Central Cordillera of Colombia. These data were used to support a model of continuous Paleogene arc magmatism along the Colombian continental margin, and to propose a paleogeographic model for the arc. The authors did not discuss previously published paleomagnetic, geochemical, geochronological, thermochronological and provenance constraints from Cretaceous to Miocene rocks of western and northern Colombia, Panama, and Ecuador that support a more plausible model of a double subduction system controlled by the convergence of the Caribbean and Farallon plates beneath the north Andean block during Paleogene. In this comment, we discuss shortcomings in the data and model proposed by Grajales et al. (2020) and present an alternative interpretation for contemporaneous arc-like magmatism during the Paleogene in the Northern Andes. We conclude that the double subduction system is the more plausible explanation for the contemporaneous arc-like magmatism during the Paleogene, currently exposed in the northern and southern portions of the Northern Andes.

scholarly journals Begonia chingipengii (sect. Baryandra, Begoniaceae), a new species from Luzon Island, Philippines

Phytotaxa ◽  
2014 ◽  
Vol 164 (3) ◽  
pp. 175 ◽  
Author(s):  
Rosario Rivera Rubite ◽  
Yoshiko Kono ◽  
Hsun-An Yang
Keyword(s):  
New Species ◽  
The Philippines ◽  
Abaxial Surface ◽  
Adaxial Surface ◽  
Acuminate Apex ◽  
Dark Green ◽  
Light Green ◽  
A New Species

Begonia chingipengii from Gabaldon, Nueva Ecija, Luzon Island is described as a new species endemic to the Philippines. This is the latest addition to the newly delimited Begonia section Baryandra. It resembles Begonia trichochila but is distinguished by the variegated leaves with light green veins and midrib contrasting with the dark green adaxial surface and maroon abaxial surface, and its oblique leaf is elongated with an acuminate apex. The robust variegated leaves, large flowers and extensive inflorescence make it very attractive.

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