Pectis loiolae (Asteraceae: Tageteae): New Species Registered in a Natural Monument at an Archaeological Site in Northeast Brazil

2021 ◽  
Vol 46 (2) ◽  
pp. 486-492
Author(s):  
Natanael Costa Rebouças ◽  
Valéria da Silva Sampaio ◽  
Mariana de Oliveira Bünger ◽  
Nádia Roque

Abstract— Pectis comprises about 90 species distributed in North America, Mexico, the Caribbean, South and Central America, and the Pacific Islands. In Brazil, the genus is represented by 14 species that mainly occur in the Cerrado and five species that are endemic to the Caatinga domain. During field expeditions to the Lajedo de Soledade archaeological site, in the state of Rio Grande do Norte, Brazil, a new species of Pectis was found on rocky outcrops (lajedos) in the Caatinga. Pectis loiolae sp. nov. grows on limestone rocks in sedimentary substrate and is recognized by its prostrate habit with ascending branches terminating in a solitary capitulum, apex of the involucral bracts rounded, apiculate, and green becoming vinaceous in the apical 1/3, corolla of ray flowers (5) with abaxial surface vinaceous and adaxial white, disk flowers 8‐10, and presence of stylopodium in the disk flowers. A morphological description, illustration, distribution map, habitat, conservation status, and a key for all Brazilian Pectis species are presented herein.

Phytotaxa ◽  
2021 ◽  
Vol 510 (2) ◽  
Author(s):  
KAUÊ NICOLAS LINDOSO DIAS ◽  
FABRÍCIO MOREIRA FERREIRA ◽  
PEDRO LAGE VIANA

Pariana caxiuanensis (Poaceae) is described and illustrated as a new species from the Brazilian Amazon. The new species is characterized by having the leaves clustered at the apex of the leafy culm, fimbriae few to absent, dimorphic flowering culms, large ligules (2.5–4 mm long), and pubescent to hirsute synflorescences. We present a morphological description, illustrations of the new species, the conservation status assessment, and a key to differentiate P. caxiuanensis from its morphologically related congeners.


Phytotaxa ◽  
2021 ◽  
Vol 527 (1) ◽  
pp. 75-82
Author(s):  
MONA SALIMBAHRAMI ◽  
HOJJATOLLAH SAEIDI ◽  
ALI BAGHERI

Iris pseudomeda is described and illustrated as a new species of Iris section Oncocyclus from Kurdistan province in northwestern Iran. It occurs among subalpine flora of Zagros mountain range, on stony calcareous hillsides and the brink of grassland fields. A complete morphological description, conservation status, botanical illustrations, notes on habitat and distribution range are presented for the new species. Furthermore, taxonomic relationships of I. pseudomeda with other members of this rhizomatous bearded section, particularly I. meda, are also discussed.


Phytotaxa ◽  
2021 ◽  
Vol 482 (1) ◽  
pp. 36-44
Author(s):  
LEONARDO PAZ DEBLE

Hysterionica s.l. (including Neja) comprises ca. 15 species distributed mainly in the grasslands of southern Brazil, Uruguay, central and northern Argentina and Southern Paraguay. Based on field surveys, study of nomenclatural types and other specimens, and review of literature, a new species is proposed here, Hysterionica chamomilloides, endemic of mountainous regions of northern Uruguay, and southwestern Rio Grande do Sul state, Brazil. This work provides a detailed morphological description of the new species, information on its geographic distribution, habitat, phenology, conservation status, and discusses the main differences between H. chamomilloides and the morphologically most similar species. Illustrations, images and a key to the South American species of Hysterionica are also supplied.


2021 ◽  
Vol 29 ◽  
pp. 14-23
Author(s):  
Alejandro Quintanar ◽  
Patricia Barberá ◽  
Diosdado Nguema ◽  
Vicent Medjibe ◽  
Zoë A. Goodwin ◽  
...  

Here we publish a new species of forest tree of the genus Drypetes Vahl (Putranjivaceae), D. umbricola D. J. Harris & Quintanar, which has a wide distribution in Central Africa (Cameroon, Central African Republic, Democratic Republic of the Congo, Gabon, and Republic of the Congo). It is known from 70 herbarium collections and additional sterile plot vouchers. A differential diagnosis, detailed morphological description, photographs, an illustration, and information about its habitat, distribution, and conservation status are provided.


1994 ◽  
Vol 68 (4) ◽  
pp. 800-807 ◽  
Author(s):  
Annette B. Tucker ◽  
Rodney M. Feldmann ◽  
Charles L. Powell

Speocarcinus berglundi n. sp. is described from the Imperial Formation in Riverside County, California. Although the Imperial Formation spans late Miocene through late Pliocene time, the part of the unit that bears crabs has been radiometrically dated as late Miocene. The identification of a new species was based upon comparison with four extant species and represents the first documented fossil occurrence for the genus. The occurrence of this new species suggests that the genus may have originated in the Pacific and, during the Miocene, dispersed through the Isthmus of Panama to the Caribbean. Two of the specimens exhibit parasitism by Bopyridae (Isopoda).


Phytotaxa ◽  
2018 ◽  
Vol 347 (2) ◽  
pp. 197 ◽  
Author(s):  
YOHAN PILLON

Metrosideros Banks ex Gaertner (1788: 170, Myrtaceae) is one of the most widespread tree genus across the Pacific islands and is an emerging model for the study of speciation in tropical trees (Papadopulos et al. 2011; Stacy et al. 2014). The material housed at the Muséum National d’Histoire Naturelle in Paris (P) was recently reviewed in order to prepare the evaluation of the New Caledonian species for the IUCN redlist (IUCN 2017) and apply some recent taxonomic changes in the genus (Pillon et al. 2015). A new species from Vanuatu came to light and is described below.


Phytotaxa ◽  
2016 ◽  
Vol 247 (2) ◽  
pp. 133 ◽  
Author(s):  
JULIÁN AGUIRRE-SANTORO ◽  
KERON C. ST. E. CAMPBELL ◽  
GEORGE R. PROCTOR

Recent botanical expeditions to the Dolphin Head Mountains in western Jamaica allowed the collection of different specimens of a new species, Hohenbergia rohan-estyi, an enigmatic plant that resembles the also Jamaican-endemic H. negrilensis. In this study, we describe H. rohan-estyi and include notes on its geographical distribution, habitat, conservation status and taxonomy. The length of the stipes and number of flowers per spike permit the differentiation of H. rohan-estyi from H. negrilensis. In addition, the geographic distributions of these two species do not overlap, as H. rohan-estyi inhabits mountainous forests of the Dolphin Head region while H. negrilensis occurs in coastal areas of western Jamaica. Finally, H. rohan-estyi is the third species of Hohenbergia reported as endemic to the Dolphin Head Mountains, indicating the importance of this area in the evolution and conservation of the genus in Jamaica and the Caribbean.


Phytotaxa ◽  
2017 ◽  
Vol 329 (3) ◽  
pp. 233
Author(s):  
KEILA CRISTINA DE JESUS ROCHA ◽  
RENATO GOLDENBERG ◽  
PEDRO LAGE VIANA ◽  
FABRÍCIO SCHMITZ MEYER

A new species of Pleroma from Serra dos Carajás, Pará state, Brazil, is described. Pleroma carajasense occurs in southeastern Amazonia, northern Brazil, in canga vegetation, on ironstone outcrops. It is morphologically related to Tibouchina caatingae, because both are shrubs with elliptic to oval leaves, conspicuous petioles (3–17 mm and 10–15 mm, respectively), a pair of elliptic bracteoles, and purple petals, anthers (both cycles) and style. Pleroma carajasense differs from T. caatingae by its chartaceous leaves (versus coriaceous in T. caatingae), with an obtuse to cuneate base (vs. obtuse to subcordate), hypanthium 4–7 × 1.2–4 mm (vs. 10–15 × 3–5 mm). According to IUCN criteria, this species should be considered endangered (EN). A morphological description, illustrations, photos in the field, scanning electronic micrographs of the leaf indumentum and seeds, information on conservation status and distribution are presented.


2021 ◽  
Vol 46 (2) ◽  
pp. 427-432
Author(s):  
Javier E. Florentín ◽  
Mariela Nuñez Florentin ◽  
Roberto M. Salas

Abstract— A new species of Galianthe from the west coast of Colombia and Ecuador that has fruits with indehiscent mericarps is described and illustrated. Galianthe holmneielsenii is most similar to Borreria ocymifolia and G. spicata, but differs in floral, fruit, and seed traits. An illustration of the diagnostic characters, a distribution map, information about the conservation status of the new species, and a key to the Galianthe species in Colombia and Ecuador are provided.


Phytotaxa ◽  
2020 ◽  
Vol 450 (1) ◽  
pp. 95-101
Author(s):  
MATHEUS FORTES SANTOS ◽  
THIAGO FERNANDES

A new species, Myrcia suberosa, is here proposed based in an ongoing taxonomic revision of Myrcia sect. Eugeniopsis, a group nearly endemic to the Atlantic Forest. Myrcia suberosa occurs in Brazil from Southern Bahia to Southern Rio de Janeiro states, but only three collections are known and the real distribution of the species is barely known. The new species is morphologically related to Myrcia pseudomarlierea and Myrcia teuscheriana, differing by sexual system, cork thickness, indument, and leaf and flower morphologies. Morphological description, images and conservation status are provided, as well as discussion about distribution, habitat, phenology and taxonomy.


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