The herbarium of Paulus Kitaibel (1757–1817) has been preserved in good condition and can still be used for the investigation of problematic questions. There happens to be a misidentified specimen on the back of one of the sheets. Although it has been studied by several botanists, it has proved impossible to identify this species because important morphological traits have been lost due to the age of the preserved material. The complete ITS region of the over 200-year-old herbarium specimen has been amplified by PCR. Sequence analysis and the secondary structure modelling of the ITS2 RNA transcript clearly provided, that the specimen is Solanum scabrum , thus settling the controversy surrounding this question. This result is particularly interesting, as the presence of S. scabrum in the Hungarian flora, has never been officially documented.
215 type specimens of 38 Sorbus taxa (15 holotypes, 23 lectotypes and 177 other types) described by Sándor Jávorka, Ádám Boros and Zoltán Kárpáti from the Carpathian Basin and the Carpathians have been examined. Types are designated here, and 15 names validly published.
Estudios sobre Rubiáceas Mexicanas, X.
Dos espécies nuevas de Rubiáceas en el herbario de Inegi (Aguascalientes), México
The valuable plant collection of INEGI has not been considered according to its merit. A preliminary study of the Rubiaceae family led to the discovery of two new species: Bouvardia castilloi and Randia lanuginosa.
The rare, fully mycoheterotrophic Ghost Orchid, Epipogium aphyllum is only visible during its short flowering and fruiting season, which lasts for a few weeks between May and October. Due to the apparent unpredictability of its flowering, decades may pass between subsequent observations at the same locality. The factors affecting timing of flowering in this enigmatic species remain largely unexplored. In Hungary, it is an extremely rare species: between 1924 and 2014 only 25 dated observations from 15 locations are known. Hungary is located on the edge of the species’ distribution area where higher precipitation may occur only in higher regions of mountains. Hence, the spatial and temporal pattern of precipitation might limit the emergence of generative shoots. In this paper we compared rainfall patterns in relation with the Ghost Orchids’ observations to multiannual precipitation averages. The year of flowering and the month preceding flowering (but not the year before flowering and the month of flowering) were characterised by significantly more rainfall than the multi-annual average precipitation. These results suggest that the appearance of the species in Hungary is precipitation-dependent.
For understanding local and regional seed dispersal and plant establishment processes and for considering the ecotypes and other forms of specific variability, hard data of locally or regionally measured traits are necessary. We provided newly measured seed weight data of 193 taxa, out of which 24 taxa had not been represented in the SID, LEDA or BiolFlor databases. Our new measurements and formerly published data of locally collected seed weight records together covers over 70% of the Pannonian flora. However, there is still a considerable lack in seed weight data of taxonomically problematic genera, even though they are represented in the Pannonian flora with a relatively high number of species and/or subspecies (e.g. Sorbus, Rosa, Rubus, Crataegus and Hieracium). Our regional database contains very sporadic data on aquatic plants (including also numerous invasive species reported from Hungary and neighbouring countries) and some rare weeds distributed in the southwestern part of the country. These facts indicate the necessity of further seed collection and measurements.
(continuously updated) . – New York Botanical Garden's Virtual Herbarium, New York . Website http://sweetgum.nybg.org/ih/ [accessed 10 February 2019 ]. U.S. Fish and Wildlife Service ( 2011
. During the revision of herbarium specimens of Lviv herbarium of the Ivan Franko Lviv National University (LW, Lviv, Ukraine) well-preserved specimens of Rehmann’s exsiccates were found and reinvestigated (Khmil et al . 2013). The aim of this paper was to
The article deals with the distribution of three species from the genus Rosa in Slovakia. Field research, sampling and herbarium sheet revision at the Herbarium of Department of Botany, Faculty of Natural Sciences Comenius University (SLO) and the Herbarium of Institute of Botany, Slovak Academy of Sciences (SAV) showed new data on the distribution of Rosa pocsii Kerényi-Nagy, Rosa polyacantha (Borbás) H. Br. and Rosa zagrabiensis Vuk. et H. Br. in Slovakia. Detailed taxonomic description, distribution of selected taxa in Slovakia, a determination key and a comparative table of the sect. Rubiginosae are given.
Taxonomic aspects of the genus Alyssum section Gamosepalum in Iran were studied. Based on herbarium and more field investigations in NE Iran 9 Alyssum species (section Gamosepalum) were identified, and seven of these species are reported as new records.
The genus Colura (Dumort.) Dumort. sect. Glotta Grolle et R. L. Zhu in Thailand is studied based on herbarium specimens and especially on recent collections. The section is reported from Thailand for the first time. Two species are recognized, namely C. bisvoluta Herzog et Jovet-Ast and C. karstenii K. I. Goebel. Descriptions, illustrations, and a key to species are provided.