Chorological and taxonomic notes on African plants, 2статья
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Дата последнего поиска статьи во внешних источниках: 5 июня 2017 г.
Авторы:Sukhorukov A.P.,
Verloove F.,
Alonso M.A.,
Belyaeva I.V.,
Chapano C.,
Crespo M.B.,
Aouni M.,
El Mokni R.,
Maroyi A.,
Shekede M.D.,
Vicente A.,
Dreyer A.,
Kushunina M.
Аннотация:The taxonomy of complicated native African taxa, Biscutella maritima (Brassicaceae) and
annual species of Sesuvium (Aizoaceae) is discussed. The distribution of B. maritima is widened
to the most of the coastal areas of NE Algeria and N Tunisia. Morphological differences with
regard to other North African members of Biscutella ser. Biscutella are reported to facilitate the
identification of B. maritima. We propose to accept four annual Sesuvium species (instead of the
one previously accepted species, S. sesuvioides sensu amplissimo) with different distributions in
Africa: S. digynum, S. hydaspicum, S. sesuvioides s.str. and S. nyasicum. A delimitation key based on
morphological and carpological characters is provided. Lectotypes of S. digynum, S. digynum var.
angustifolium, S. hydaspicum, S. nyasicum, Diplochonium sesuvioides (Sesuvium sesuvioides) and
Trianthema polysperma (synonym of Sesuvium hydaspicum) are selected. Other discussed taxa
belong to the alien elements of the flora. Atriplex semibaccata (Amaranthaceae-Chenopodiaceae)
is reported as a new species for Cape Verde. Gaillardia × grandiflora (Asteraceae) is discovered
as a new species for Africa found in Morocco. Prosopis velutina (Fabaceae) is collected for the
first time in Northern Africa (Morocco). Mollugo verticillata (Molluginaceae) is recorded as a new
species for DR Congo. Its morphology, including seed ornamentation, is discussed in reference
to other similar-looking Molluginaceae. Incidence of American species Heterotheca subaxillaris
(Asteraceae) in North Africa is discussed. Vernonanthura polyanthes (Asteraceae) is recorded as a
naturalized invasive species in eastern Zimbabwe. It seems to be the first documented discovery
of this ergasiophyte in Africa.