A new species of Platycarpum (Rubiaceae, Henriquezieae) from Peruvian Amazon

Phytotaxa ◽  
2016 ◽  
Vol 260 (3) ◽  
pp. 276 ◽  
Author(s):  
NÁLLARETT DÁVILA ◽  
LUIZA SUMIKO KINOSHITA

The new species Platycarpum loretensis (Rubiaceae) is endemic to the Loreto Department, Peru, and restricted to white sand forests (varillal), palm swamps, and peatlands. It is similar to P. orinocense from which can be separated by the oblanceolate leaves with prominulous intersecondary veins (vs. elliptic to ovate, without intersecondary veins), corollas 1.9–3 cm long (vs. 1.2–2(–2.2) cm long), and fruits 4.7–5.5 × 3.6–4.9 cm (vs. 3–3.5 × 2.8–3.5 cm).

2016 ◽  
Vol 83 (3) ◽  
pp. 207-218 ◽  
Author(s):  
José M. Padial ◽  
Giussepe Gagliardi-Urrutia ◽  
Juan C. Chaparro ◽  
Roberto C. Gutiérrez

Phytotaxa ◽  
2017 ◽  
Vol 319 (3) ◽  
pp. 289 ◽  
Author(s):  
ANDREAS FLEISCHMANN ◽  
SUZANA M. COSTA ◽  
VOLKER BITTRICH ◽  
MARIA DO CARMO ESTANISLAU DO AMARAL ◽  
MICHAEL HOPKINS

A new species of Genlisea section Genlisea from the white-sand savannas (“campinaranas”) of Brazilian Amazon is described and illustrated, providing remarks on habitat and ecology as well as SEM seed images. Genlisea multiflora has been recorded from Viruá National Park, and is of affinity to the large, purple-flowered species G. sanariapoana and G. guianensis. An identification key to all Genlisea species north of the Amazon is presented.


2012 ◽  
Vol 26 (1) ◽  
pp. 17 ◽  
Author(s):  
Alejandro Oceguera-Figueroa ◽  
Amalie K. Barrio ◽  
Maria I. Aldea-Guevara ◽  
Mark E. Siddall

Morphological characters of well-established taxonomic utility are infrequently examined for their relative phylogenetic consistency. Second only to characters of reproductive anatomy, jaw morphology and dentition commonly are employed as diagnostic characters for hirudiniform leeches, yet these features are highly variable across the group. Patterns of change were investigated for number of jaws and number of denticles per jaw in a phylogenetic context across 17 hirudiniform leeches representing three families. Phylogeny reconstruction employed 16 morphological characters, as well as two nuclear and two mitochondrial loci, and was evaluated with parsimony and likelihood. Rather than constrain the ancestral number of denticles to extant states, this meristic was optimised with squared-change parsimony. The degree to which dentition patterns were explained by phylogenetic relationships was assessed against a null distribution defined by permutation of extant states across terminals. Dentition was found to be non-randomly explained by phylogeny and, thus, corroborative of relationships among hirudiniform leeches as well as of the uniqueness of a new species of Oxyptychus described here from the Peruvian Amazon.


2021 ◽  
Vol 5 (2) ◽  
pp. 44-59
Author(s):  
A. Cerna ◽  
D. Vecco-Giove ◽  
M. Doria ◽  
H. Panduro ◽  
J. Rojas ◽  
...  

The consumption of insects is a widespread practice among indigenous or native peoples of the Amazon. To assess the knowledge of the diversity of resources for entomophagy from the perspective of these peoples, testimonies or references about knowledge and feeding traditions of 100 people were collected in 37 localities in seven provinces of the department of San Martín in the basin of the Huallaga River. One cumulative species curve and the probability function of new species were estimated, then the probability of not finding a new species (99.5 %) to n100 was determined. The specimens that were captured in the field (54 %) were compared with representative specimens and databases, and the information provided by the participants was analysed to approximate the preliminary taxonomic locations of the remaining part of the sample. We found 46 resources for entomophagy and reported for first time in the Peruvian Amazon, the feeding with Chrysophora chrysochlora, Podalia sp., Lusura chera, and Cymothoidae, among others. Entomophagy is a deeply rooted practice in the native and riverine populations of the Huallaga basin, where Rhynchophorus palmarum, Rhinostomus barbirostris, Atta cephalotes sspp. and Brassolis sophorae were the most consumed for 78 % – 97 % of people. The least consumed species have the common characteristic of being scarce and they were part of the diet of the oldest segment in previous decades. At least 10 resources ceased to be consumed by the members of the sample. In addition to nutritional potential, the diversity of edible arthropod fauna represents complementary values for community health and cultural identity; however, most of these resources (87 %) are threatened and could disappear in brief time, as is the knowledge related to their use.


Phytotaxa ◽  
2019 ◽  
Vol 414 (5) ◽  
pp. 253-261
Author(s):  
PAULO HENRIQUE GAEM ◽  
FRANCISCO FARROÑAY ◽  
FIORELLA FERNANDA MAZINE ◽  
ALBERTO VICENTINI

The new species Myrcia psammophila is here described, illustrated and compared with M. grandis and M. umbraticola, two morphologically similar taxa. It may be distinguished from these two latter species based on possession of leaves with corky petiole and raised midvein adaxially, and distinctly pedicellate flowers with squared staminal ring and sepals united at the base. This species is endemic to a region of lower Rio Negro and inhabits areas of white-sand vegetation.


Phytotaxa ◽  
2015 ◽  
Vol 212 (4) ◽  
pp. 249 ◽  
Author(s):  
Elidiene P. Seleme ◽  
GWILYM P. LEWIS ◽  
CHARLES H. STIRTON ◽  
Ângela L.b. Sartori ◽  
Vidal F. Mansano

A taxonomic revision of the South American genus Amburana comprised of three species is presented, including the new species A. erythrosperma which is described and illustrated. Amburana cearensis occurs widely in Argentina, Bolivia, Brazil and Paraguay.  Amburana acreana occurs in the Bolivian, Brazilian and Peruvian Amazon. Amburana erythrosperma is endemic to the southern Chapada Diamantina, Bahia, Brazil. The species are distinguished by the color of the stem, the number per leaf and shape of leaflets, the size of inflorescence, color and size of the standard petal, fruit with endocarp developed to form a papery wing surrounding the seed or this lacking, and color of seed. A key to the species is provided together with descriptions, taxonomic comments, geographical distribution maps and illustrations for each.  Lectotypes for A. acreana and A. cearensis are designated.


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