Alexander N. Sennikov

Hieracium × grofae — a rediscovered diploid hybrid from the Ukrainian Carpathians

Diploid hybrid plants (2n = 18) between sexual diploid cytotypes of Hieracium alpinum and H. umbellatum were found in the Ukrainian Eastern Carpathians. They were identified with H. × grofaeWoł., originally used for the combination H. decipiens × H. umbellatum var. lactaris. As H. decipiens sensu Woł. (non Tausch) does not produce viable pollen grains and is most probably a polyploid apomict, it is unlikely to produce diploid hybrid plants with diploid H. umbellatum. Both parent species, Hieracium alpinum and H. umbellatum are also given by Wołoszczak from the original locality. Thus we conclude that H. × grofae is result of hybridization between H. alpinum and high mountain form of H. umbellatum. Hybrid plants are morphologically intermediate between the parent species, and moreover resemble closely or they are identical with the experimental hybrids of the same parent combination. Hybrids produce rather high amount of homogeneously sized pollen grains (values of standard deviation and coefficient of variation lower then upper limits for diploids — 3μm or 7.5%, respectively), and might probably serve as male parents in further crosses; on the other hand, they are fully seed-sterile. A lectotype of H. × grofae, a second proved nothotaxon in the genus Hieracium s.str., is designated. Localities of H. × grofae are located in subalpine belt of the Marmarosh Mts, the Svydovets’ Mts and the Horhany Mts (all in the Ukrainian Eastern Carpathians). Biotopes of hybrid plants usually represent secondary formed and disturbed pastures allowing close contact of altitudinally vicariant parent taxa.

Report of the Special Committee on Registration of Algal and Plant Names (including fossils)

The Special Committee on Registration of Algal and Plant Names (including fossils) was established at the XVIII International Botanical Congress (IBC) in Melbourne in 2011, its mandate being to consider what would be involved in registering algal and plant names (including fossils), using a procedure analogous to that for fungal names agreed upon in Melbourne and included as Art. 42 in the International Code of Nomenclature for algae, fungi, and plants. Because experience with voluntary registration was key to persuading mycologists of the advantages of mandatory registration, we began by asking institutions with a history of nomenclatural indexing to develop mechanisms that would permit registration. The task proved more difficult than anticipated, but considerable progress has been made, as is described in this report. It also became evident that the Nomenclature Section needs a structure that will allow ongoing discussion of registration and associated issues. Simultaneously with this report we are submitting four proposals that would provide such a structure.

Typification of Pallas’ names in Salix

SummaryThe original collections of Salix species described by Pallas are discussed. Eight names validated by Pallas and one by Nasarov are typified. The use of six currently accepted names, S. arbutifolia Pall., S. arctica Pall., S. berberifolia Pall., S. caspica Pall., S. divaricata Pall. and S. rhamnifolia Pall., is confirmed. Salix serotina Pall. retains its place as a synonym of S. viminalis L. Salix gmelinii Pall. is resurrected and proposed as the correct name for the taxon previously known as S. dasyclados Wimm. S. burjatica Nasarow and S. jacutica Nasarow, the old synonyms of S. dasyclados, therefore are now also synonyms of S. gmelinii. A new combination S. rosmarinifolia L. subsp. sibirica is proposed.

Atlas Florae Europaeae Notes 28. Disentangling the Taxonomic Circumscription of Sorbus subdanubialis (Rosaceae)

The current circumscription of Sorbus subdanubialis includes several taxa. By lectotypification this name is applied to a species that is restricted to the Gömör-Torna Karst in southeastern Slovakia and adjacent Hungary. A new description and revised distribution map of S. subdanubialis are presented. Using flow cytometry analysis it is recognised as triploid. Other populations from the Buda and Pilis Mts., the western Balaton Uplands and Keszthely Mts., previously assigned to S. subdanubialis, turned out to represent two undescribed triploid and presumably apomictic species, endemic to Hungary. The former records of S. subdanubialis from the Vértes Mts. belong mostly to S. pannonica and S. ulmifolia, both endemic to western Hungary. A morphometric analysis of leaf characters demonstrated that the leaf dentation and leaf dimensions are most important in distinguishing between S. subdanubialis, S. danubialis and two undescribed species (to be described later), whereas the leaf shape (apex and base) has an important but secondary role in discriminating among these taxa.

Atlas Florae Europaeae Notes 24. Taxonomic Interpretation and Typification of Sorbus pannonica (Rosaceae), a Presumed Intermediate between S. aria and S. graeca from Hungary

The original taxonomic circumscription of Sorbus pannonica was uncovered in an inventory of historical herbarium collections. The presumed original material of the name included several taxa. The selected lectotype belongs to a species with elongate leaves, which are slightly obovate and minutely lobed apically, typically with a narrowly cuneate base and a short triangular apex. This triploid, presumably apomictic species seems to be endemic to the Transdanubian Mts. (Vértes, eastern Bakony Mts., eastern Balaton Uplands) within western Hungary. A new description and a revised distribution map of S. pannonica are provided, and the species is compared with the most similar taxa from Hungary. The provisional IUCN conservation assessment of S. pannonica is Vulnerable (VU).

Atlas Florae Europaeae Notes 18. Synonymy and Distribution of Some Native and Alien Species of Cotoneaster (Rosaceae) in Eastern Europe and the Caucasus

Some corrections to the nomenclatural checklist of Cotoneaster (Rosaceae) in eastern Europe and the Caucasus are proposed. Cotoneaster uralensis B. Hylmö & J. Fryer is treated as a synonym of C. cinnabarinus Juz., and C. soczavianus Pojark. as a synonym of C. tomentosus (Aiton) Lindl. For the sake of stability, the established use of the name C. integerrimus Medik. is maintained according to the lectotype designated by B. Hylmö and contrary to the conserved type belonging to C. scandinavicus B. Hylmö. The name C. pyrenaicus Gand. is found applicable to C. integerrimus sensu Hylmö if the conservation is followed. Cotoneaster mamajevii Knjaz. and C. estiensis J. Fryer & B. Hylmö are reduced to the synonymy of C. integerrimus. The second-step lectotypes of C. antoninae Juz. and C. cinnabarinus Juz. are designated. Cotoneaster cinnabarinus is reported as new to the Tyumen Region of Russia and Siberia as a whole. Some records of casual and naturalised alien species of Cotoneaster in the European Russia are revised and corrected.

Atlas Florae Europaeae notes, 19-22. Nomenclatural changes and taxonomic adjustments in some native and introduced species of Malinae (Rosaceae) in Europe.

Abstract Sennikov A. N. & Phipps J. B.: Atlas Florae Europaeae notes, 19–22. Nomenclatural changes and taxonomic adjustments in some native and introduced species of Malinae (Rosaceae) in Europe. — Willdenowia 43: 33–44. June 2013. — Online ISSN 1868-6397;

The nomenclature of Portulaca oleracea and P. sativa (Portulacaceae)

Abstract Uotila P., Sennikov A. N. & Danin A.: The nomenclature of Portulaca oleracea and P. sativa (Portulacaceae). — Willdenowia 42: 25–28. June 2012. — Online ISSN 1868-6397;

Atlas Florae Europaeae Notes. 16. New Names in Rubus (Rosaceae)

The typification of Rubus scissus W.C.R. Watson is corrected. This name is to be applied to R. nessensis Hall subsp. scissoides H.E. Weber nom. inval., and R. scissus auct. is redescribed here as a new species R. ochracanthus H.E. Weber & Sennikov. Three species names earlier published with two types (R. christianseniorum H.E. Weber, R. insulariopsis H.E. Weber, R. stormanicus H.E. Weber) are validated here by type designation.

Atlas Florae Europaeae Notes 29. Two New Species of Sorbus (Rosaceae) Endemic to Hungary, Previously Confused with S. subdanubialis

Two triploid and presumably apomictic species of Sorbus (Rosaceae), endemic to Hungary, are described as new to science: S. ujhelyii Somlyay & Sennikov from the Buda and Pilis Mts. within the Transdanubian Mts. in Budapest and its vicinities, and S. keszthelyensis Somlyay & Sennikov from the western Balaton Uplands and Keszthely Mts. in the westernmost part of the Hungarian Middle Range in Transdanubia. These taxa have so far been included in S. subdanubialis.