New taxa in Drosanthemum and a new genus in Drosanthemeae (Ruschioideae, Aizoaceae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43918401" target="_blank" >RIV/62156489:43210/20:43918401 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.11646/phytotaxa.459.2.5" target="_blank" >https://doi.org/10.11646/phytotaxa.459.2.5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.11646/phytotaxa.459.2.5" target="_blank" >10.11646/phytotaxa.459.2.5</a>

Result language

angličtina

Original language name

New taxa in Drosanthemum and a new genus in Drosanthemeae (Ruschioideae, Aizoaceae)

Original language description

A phylogeny of all nine subgenera of Drosanthemum, based on chloroplast sequence-data, is presented. The results confirm some previously published facts, e.g. that D. zygophylloides is sister to Drosanthemum. We propose to treat this species as a new monotypic genus, Lemonanthemum, which differs from Drosanthemum in features of the leaves and fruit-stalks. In Drosanthemum s.s., the small subg. Quadrata, characterized by 4-locular fruits, is highly supported as sister to the remainder of Drosanthemum (where fruits are 5-locular). Further, our data support the transfer of Delosperma pubipetalum to Drosanthemum (where a nomenclatural change is also made). The pubescent petals, 5-locular fruits with narrow covering membranes and downward-pointing hair-like papillae on the branches suggest that D. pubipetalum is close to D. papillatum and belongs to subg. Quastea. Another species, D. badspoortense, which had been placed in D. subg. Quastea on account of its narrow covering membranes, is shown to belong to Delosperma and also lacks the unique structure of the fruit-stalk of Drosanthemum. In addition, a new species, D. overbergense, is described from disjunct patches of remnant renosterveld within the Overberg and near Albertinia, in the Western Cape of South Africa. Morphological characteristics suggest that this species belongs to subg. Xamera, but this was not corroborated by our molecular data. Finally, a new name-Drosanthemum calcareum-is proposed for the illegitimate D. intermedium and a lectotype (at BOL) is designated for D. pubipetalum. The lectotypification of D. badspoortense is also proposed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Phytotaxa

ISSN

1179-3155

e-ISSN

—

Volume of the periodical

459

Issue of the periodical within the volume

2

Country of publishing house

NZ - NEW ZEALAND

Number of pages

16

Pages from-to

139-154

UT code for WoS article

000573073400005

EID of the result in the Scopus database

2-s2.0-85092074585