Species of Draba cinerea aggregate (Brassicaceae) in the Northern Russia

Author(s):  
V. V. Petrovsky

The paper contains results of fi eld observations of plants and cameral research of herbarium specimens kept in the Herbarium of Komarov Botanical Institute (LE), included in the aggregate Draba cinerea Adams s. l. (D. cinerea, D. arctica J. Vahl, D. arctogena (E. Ekman) E. Ekman, D. oblongata R. Br. ex DC., D. parvisiliquosa Tolm., D. taimyrensis Tolm.). The problem of differentiation and identification of the taxa comprising the aggregate is discussed. The distribution of several species is clarified. Three new species are described from the Northern Russia: D. metaarctica Petrovsky, D. tolmatchevii Petrovsky and D. tundrostepposa Petrovsky. A key for determination of the species of the aggregate is given.

2010 ◽  
Vol 35 (4) ◽  
pp. 894-906 ◽  
Author(s):  
Maria S. Vorontsova ◽  
Maarten J. M. Christenhusz ◽  
Paul Kirika ◽  
Patrick Muthoka

Phytotaxa ◽  
2021 ◽  
Vol 522 (1) ◽  
pp. 47-55
Author(s):  
SVETLANA OVCZINNIKOVA

A new species, Lappula botschantzevii, is described from the desert zone of North-Western Africa. The new species belongs to the section Lappula and is close to the species L. patula, from which it differs in a smaller corolla, a scorpioid inflorescence (bilateral flowers) with loosely spaced flowers, a heteromorphic coenobium with two types of eremocarps: A) winged with glochids and a large number of spines along the edges of the disc of eremocarps and B) with a second short row of spines. The species is described based on samples from collections housed in three herbaria: Herbarium of the Komarov Botanical Institute RAS, Sankt-Peterburg (LE, Russia) and Muséum National d ‘Histoire Naturelle, Paris (P, France), Université de Montpellier (MPU). It is named after the Russian botanist Viktor Petrovich Botschantzev, who spent many years studying the flora of Africa and who collected samples of the new species. The absence of holotypes required the typification of the names of the studied species Lappula patula, L. capensis and L. eckloniana.


Zootaxa ◽  
2015 ◽  
Vol 3919 (1) ◽  
pp. 41 ◽  
Author(s):  
EUGENYI A. MAKARCHENKO ◽  
MARINA A. MAKARCHENKO

A systematic review of the genus Abiskomyia Edwards, 1937 is presented based on materials from the Russian Far East and bordering territories. Three new species: A. korbokhon sp. nov., A. levanidovi sp. nov., A. rivalis sp. nov. and one subspecies A. virgo orientalis subsp. nov. are described and figured. Emended generic diagnoses and keys to determination of adult males, pupae and fourth instar larvae of all known species and subspecies of the Abiskomyia of the Palaearctic region are provided. 


2010 ◽  
Vol 67 (2) ◽  
pp. 219-233 ◽  
Author(s):  
O. Lachenaud ◽  
D. J. Harris

Three new species of Rubiaceae from Central Africa are described and illustrated. Chassalia lutescens O.Lachenaud & D.J.Harris (widespread from Cameroon to Democratic Republic of Congo) is recognised inter alia by the T-shaped ventral furrow of the seeds and the orange-yellow discoloration of inflorescences in herbarium specimens. Psychotria nodiflora O.Lachenaud & D.J.Harris (Central African Republic, Congo-Brazzaville and Democratic Republic of Congo), belonging to Psychotria subgen. Psychotria sect. Involucratae, is unique among African species of the genus in having paired axillary inflorescences. Psychotria pteropus O.Lachenaud & D.J.Harris (Central African Republic and Democratic Republic of Congo) belongs to Psychotria subgen. Tetramerae; it is closely related to P. leptophylla Hiern but differs in its narrow corolla tube and globose to ellipsoid fruits.


1997 ◽  
Vol 75 (5) ◽  
pp. 781-790 ◽  
Author(s):  
P. W. Crous ◽  
M. J. Wingfield

Although Africa and Indonesia have not been particularly well surveyed for Mycosphaerella leaf spot fungi, several species are known to occur on Eucalyptus leaves in these areas. Three new species of Mycosphaerella with anamorph states are described from herbarium specimens and cultures in the present study. Mycosphaerella suttoniae and Mycosphaerella heimioides are described from Eucalyptus leaves from Indonesia. The former species is of particular interest, because its anamorph Phaeophleospora epicoccoides is the first species of Phaeophleospora linked to Mycosphaerella. Mycosphaerella irregulariramosa is described from Eucalyptus saligna growing in the Northern Province of South Africa. Both M. irregulariramosa and M. heimioides have Pseudocercospora anamorphs, and these are described as Pseudocercospora irregulariramosa and Pseudocercospora heimioides. Notes are also provided on the host range and geographic distribution of previously described species of Mycosphaerella on Eucalyptus leaves in other parts of Africa and in Indonesia. Key words: Eucalyptus, Kirramyces, Mycosphaerella, Phaeophleospora, Pseudocercospora, systematics.


Phytotaxa ◽  
2021 ◽  
Vol 516 (3) ◽  
Author(s):  
ROSARIO RIVERA RUBITE ◽  
CELEENA AIMEREE DE GUZMAN JUSTO ◽  
PATRICKA COLIFLORES VILLASEÑOR ◽  
MARJORIE D. DELOS ANGELES ◽  
DANILO N. TANDANG ◽  
...  

The geographic location, climatic, and soil conditions of Samar Island render a mosaic of varied habitats which harbor numerous endemic, rare, and endangered species of plants. The island province is one of the centers of plant endemism in the Philippines. Included in this rich biodiversity of flora are members of genus Begonia of the family Begoniaceae. In 2018, researchers of the University of the Philippines found in the island three unknown Begonia species. With rhizomatous habits, persistent stipules, protandrous inflorescences, four-tepaled flowers, three winged capsules and bifid placenta, the three species are clearly members of Begonia section Baryandra. Studies of literature, herbarium specimens, and living plants support the recognition of the three new species: Begonia sohoton, Begonia tarangban and Begonia burabod.


2018 ◽  
Vol 31 (1) ◽  
pp. 48 ◽  
Author(s):  
Heidi M. Meudt ◽  
Jessica M. Prebble

A taxonomic revision of southern hemisphere bracteate-prostrate forget-me-nots (Myosotis L., Boraginaceae) is presented here. The group comprises mostly species endemic to New Zealand plus the South American Myosotis antarctica Hook.f. (also Campbell Island) and M. albiflora Hook.f. The statistical analyses of morphological data from herbarium specimens reported here support recognition of five main subgroups on the basis of habit. Excluding the M. pygmaea Colenso species group (M. antarctica, M. brevis de Lange & Barkla, M. drucei (L.B.Moore) de Lange & Barkla, M. glauca (G.Simpson & J.S.Thomson) de Lange & Barkla, and M. pygmaea), which is being treated elsewhere, 14 species are recognised in the following four remaining subgroups: (1) creeping-species group: M. matthewsii L.B.Moore, M. chaffeyorum Lehnebach, M. spatulata G.Forst., M. tenericaulis Petrie, and M. albiflora; (2) cushion-species group: M. uniflora Hook.f., M. pulvinaris Hook.f., and M. glabrescens L.B.Moore; (3) M. cheesemanii + M. colensoi species group: M. cheesemanii Petrie and M. colensoi J.F.Macbr.; and (4) M. lyallii species group: M. lyallii Hook.f. and new species M. retrorsa Meudt, Prebble & Hindmarsh-Walls. New species Myosotis umbrosa Meudt, Prebble & Thorsen and M. bryonoma Meudt, Prebble & Thorsen do not fit comfortably within these subgroups. Myosotis elderi L.B.Moore is treated as M. lyallii subsp. elderi (L.B.Moore) Meudt & Prebble. For each of the 14 species revised here, a key to species, descriptions, phenology, distributions, maps, illustrations, specimens examined and notes are provided. Some specimens examined do not fit within these species and require additional comparative studies, including with certain ebracteate-erect species, before taxonomic decisions can be made. Future research on these and other southern hemisphere Myosotis should incorporate the morphological data presented here, with additional genetic, cytological, pollen, and other data in an integrative systematic framework.


Author(s):  
V. M. Vasjukov

Three new species of the genus Thymus L. are described from the Eastern Europe, East Siberia and the Russian Far East: T. × goginae Vasjukov, nothosp. nova (Vladimir Region), T. lenensis Vasjukov, sp. nova (Republic of Yakutia) and T. probatovae Vasjukov, sp. nova (Magadan Region); a key for determination of the species of the European Russia forest zone is given.


2021 ◽  
Vol 904 (1) ◽  
pp. 012030
Author(s):  
M O Mousa ◽  
S A Alkubaisy ◽  
N M Abood ◽  
S S Shahatha

Abstract Three species belong to the genus Convolvulus L. from the Convolvulaceae family, new to Flora of Western Desert District were recorded. These species were Convolvulus cantabrica L., Convolvulus reticulatus Choisy and Convolvulus stachydifolius Choisy. Species were photographed, their taxonomical and ecological characters, as well as their geographical distribution in the Western Desert were demonstrated. Plant samples were collected, precisely identified, dried and herbarium specimens were prepared and deposited at Anbar University Herbarium (AUH). Some notes on habitat, flowering and fruiting periods were provided. The means and reasons that helped these species to be distributed in new places within the Western Desert District of Iraq were realistically discussed, it was found that there was no sample of the three mentioned species that were collected from the Western Desert District at all.


Sign in / Sign up

Export Citation Format

Share Document