Willdenowia 31 - Abstracts

Peruzzi, L., Garbari, F. & Bottega, S.: Symphytum tanaicense (Boraginaceae) new for the Italian flora. – Willdenowia 31: 33-41. 2001. – ISSN 0511-9618.
Symphytum tanaicense is recorded for the first time for Italy (Lake of Massaciuccoli, NW Tuscany). Morphological, karyological and ecological characteristics of this plant, as compared with those of S. officinale, are presented and discussed.
Marhold, K.: Lectotypification of names of the European representatives of Cardamine subg. Dentaria (Cruciferae). – Willdenowia 31: 43-49. 2001. – ISSN 0511-9618.
Five names of species of Cardamine subg. Dentaria (Cruciferae), originally treated within the genus Dentaria, are typified or lectotypified: D. bulbifera, D. enneaphyllos, D. glandulosa, D. quinquefolia and D. heptaphylla. Data on the types of the remaining, already lectotypified, currently accepted names of the European representatives of this subgenus are provided as well.
Brofas, G., Karetsos, G., Panitsa, M. & Theocharopoulos, M.: The flora and vegetation of Gyali island, SE Aegean, Greece. – Willdenowia 31: 51-70. 2001. – ISSN 0511-9618.
Gyali is a small volcanic island with a surface of 4.63 km2 in the SE Aegean Sea. Flora and vegetation of its main natural ecosystems and their ecological conditions are examined. The main vegetation units on Gyali are: Pinus brutia forest, scrubs and phrygana, psammophilous and halophytic communities. A total of 241 native taxa (species and subspecies) are reported, including 149 new records for the island. Analysis of the flora based on ecological indicator values shows that 29 % of the taxa are indicators of extreme warmth and 72 % of very dry or dry habitats. 43 % are acidophilous or calcifuge taxa and 45.2 % halotolerant taxa, or facultative or obligatory halophytes.
Kilian, N.: Lactuca stebbinsii (Lactuceae, Compositae), a puzzling new species from Angola. – Willdenowia 31: 71-78. 2001. – ISSN 0511-9618.
A small perennial herb from marshy meadows in the highlands of SW Angola, only known from three 19th and early 20th century collections, is described as Lactuca stebbinsii, a species new to science, and illustrated. The taxonomic position of the unusual species with entirely beakless, apically truncate, pale brown, distinctly compressed and glabrous achenes within the Lactuca-Prenanthes line of the Lactucinae is discussed. The morphological features indicate a placement in Lactuca s.l. as the most plausible solution. Possible relationships are discussed but cannot be established yet.
Austin, D. F. & Eich, E.: Synopsis of Stictocardia with another Madagascan species, S. mojangensis (Convolvulaceae). – Willdenowia 31: 79-85. 2001. – ISSN 0511-9618.
The Madagascan endemic Ipomoea mojangensis is transferred to Stictocardia and the combination S. mojangensis validated. This species differs from most others in Stictocardia by having large clusters of white to pinkish or pale lavender flowers, reflexed mature fruits with a "cap" and a honey-like liquid that surrounds the seeds and dries to produce a shiny surface. Also in contrast with the other known species, leaves are absent when flowers are present. The species is placed in Stictocardia even though the fruits are in certain respects different from all other known members of that genus. Yet, the endocarp with the pockets that hold the seeds is constant in all known Stictocardia species. The species is described and illustrated, and a key and distribution map are given for all known members of the genus. Furthermore, the species is characterized phytochemically (occurrence of pyrrolidine/ tropane/nortropane alkaloids and cyanogenic glycosides).
Parolly, G. & Nordt, B.: Seseli hartvigii (Apiaceae), a new name for S. ramosissimum Hartvig & Strid, with carpological and ecological notes on this species. – Willdenowia 31: 87-93. 2001. – ISSN 0511-9618.
The new name Seseli hartvigii replaces the illegitimate later homonym S. ramosissimum of 1987 for a species hitherto only known from the type collection originating from the Çalbali Dagi W of Antalya, Turkey. New material allows the description and scanning electron micrographs of the previously unknown fruit, and suggests placing S. hartvigii close to the Greek S. (sect. Seseli) aroanicum. Distribution (including three new localities) and ecosociology of this rare subalpine plant of wind-swept rocky habitats of the Beydaglari (W Taurus Mts) are outlined.
Danin, A.: A new species of Bufonia (Caryophyllaceae) from Israel: B. ramonensis. – Willdenowia 31: 95-100. 2001. – ISSN 0511-9618.
Bufonia ramonensis is a small chamaephyte with lignified branches, described from one mountain slope at the Negev Highlands, where it is confined to crevices and soil pockets of smooth-faced limestone. The new species is closely related to B. multiceps, which is a hemicryptophyte with herbaceous stems endemic to similar microhabitats in magmatic rocks of southern Sinai.
Pimenov, M. G., Kljuykov, E. V. & Ostroumova, T. A.: Towards a clarification in the taxonomy of Sino-Himalayan species of Selinum L. s. l. (Umbelliferae). The genus Oreocome Edgew. – Willdenowia 31: 101-124. 2001. – ISSN 0511-9618.
Oreocome, a genus of Himalayan Umbelliferae, which has not been accepted in the majority of regional floristic treatments and whose name was previously lectotypified with O. candollei, is re-defined with the help of carpological features. Oreocome is considered to comprise six species, distributed from Pakistan to SW China with a centre of diversity in the Himalayas, and it is delimited from both Selinum and Ligusticopsis. Three new species, viz. O. involucellata and O. depauperata from Nepal and O. hindukushensis from Pakistan, are described as new to science. Four new combinations, two in Oreocome (O. striata, O. limprichtii) and two in Ligusticopsis (L. wallichiana, L. coniifolia) are validated. Keys are provided to the accepted species of Oreocome and to the Himalayan species of Ligusticopsis.
Sánchez, C.: A new filmy fern species and new unispecific section of Trichomanes (Hymenophyllaceae) ("filmy ferns") from Cuba. – Willdenowia 31: 125-127. 2001. – ISSN 0511-9618.
Trichomanes caluffii is newly described from the mountains of northeastern Cuba. It is characterised by the absence of blackish (fasciculate, forked or simple) marginal trichomes or marginal scales, lack of a false submarginal vein, scarceness and reduced size of the false veinlets, and large pluricellular rhizoids with but light pigmentation. By these features it is distinct from all other species and recognised sections of T. subg. Didymoglossum, which is why it is considered as constituting a section of its own, T. sect. Reducta. T. caluffii is a threatened species, assigned to the critically endangered (CR) IUCN threat category.
Mory, B.: Notes on Crossopetalum, Myginda and Gyminda (Celastraceae) from Cuba. – Willdenowia 31: 129-135. 2001. – ISSN 0511-9618.
Taxonomic and nomenclatural results related to Cuba from a revision of the Celastraceae for the projects of the "Flora de la República de Cuba" and the "Flora of the Greater Antilles" are provided: Crossopetalum orientale is described as a species and Myginda uragoga subsp. glabra as a subspecies new to science, the combination Gyminda latifolia subsp. glaucifolia is validated, C. coriaceum, previously known only from the Bahamas, is reported for Cuba for the first time, the names Myginda uragoga and Maytenus cuneifolius (º Torralbasia cuneifolia) are neotypified and lectotypified, respectively and C. spathulifolium is placed in the synonymy of the latter name.
Kilian, N. & Smalla, B.: Ageratum salvanaturae (Eupatorieae, Compositae), a new species from the National Park El Imposible, Ahuachapán, El Salvador. – Willdenowia 31: 137-140. 2001. – ISSN 0511-9618.
Ageratum salvanaturae, an eglandular, epappose and epaleate herb with its capitula regularly aggregated in compact, globular synflorescences, is described as a species new to science and illustrated. It is known only from five collections made at medium altitudes in the El Imposible National Park in NW El Salvador near the border with Guatemala. Its relationship is uncertain.
Zepernick, B. & Meretz, W.: Christian Konrad Sprengel's life in relation to his family and his time. On the occasion of his 250th birthday. – Willdenowia 31: 141-152. 2001. – ISSN 0511-9618.
The background of Christian Konrad Sprengel's leisure time dedication to nature observation, which led to the founding of pollination biology, is reconstructed from the scattered sources available, focusing on his family and career. In a Christian family with an inclination to natural sciences he grew up as the youngest of fifteen children. His father was an archdeacon, his paternal grandfather organist and teacher, and the same professional path was mapped out for Christian Konrad and his brothers. As headmaster of a grammar school Christian Konrad had, however, constant problems with students, their parents and his supervisors. In a personal crisis in 1782, his doctor, Ernst Ludwig Heim, advised him to seek relaxation and recovery from these problems in the study of nature. On this advice he began his time consuming observations, which eventually brought further accusations that he was neglecting his pupils, and finally, in 1794, he was forced to retire. However, the results of his observations were published and acknowledged immediately by several botanists. The family tree and a table of the major events of his life are provided.
Vogt, R. & Schuhwerk, F.: Type material in the Hieracium collection of Hans Schack - 2. Names published by others than Schack. – Willdenowia 31: 153-170. 2001. – ISSN 0511-9618.
Hans Schack (1878-1946) distributed his rich Hieracium collection between the Botanical Museum Berlin-Dahlem (B) and the Bavarian Botanical Society in Munich. The latter part is now incorporated in the Botanische Staatssammlung München (M). A list of Hieracium names published by various authors on the basis of plant material collected by Schack or deposited in Schack's herbarium is presented here, including information on the type localities given in the protologues. The type material available is listed with full label data and other particulars found on the specimens. The status of the type specimens is discussed, 54 names are lectotypified and three names are transferred to synonymy, viz. Hieracium murorum subsp. heterocladophorum (= H. murorum subsp. oblongum), H. piloselloides subsp. judicarinum (= H. piloselloides subsp. obscurum) and H. wallrothianum (= H. bifidum s. str.).
Leuenberger, B. E.: The type specimen of Opuntia cardiosperma (Cactaceae), new synonyms and new records from Argentina and Paraguay. – Willdenowia 31: 171-179. 2001. – ISSN 0511-9618.
The type specimen of Opuntia cardiosperma (Cactaceae) from Paraguay, extant in the spirit collection of the Berlin-Dahlem herbarium, is illustrated. Comparison with unidentified specimens from Paraguay and northern Argentina revealed that the species is widespread but has been confused with O. paraguayensis. An amplified description of O. cardiosperma is provided. O. chakensis and O. mieckleyi are treated as new synonyms of O. cardiosperma.
Leuenberger, B. E.: Opuntia paraguayensis (Cactaceae) reassessed. – Willdenowia 31: 181-187. 2001. – ISSN 0511-9618.
The confusing history of the name Opuntia paraguayensis is described. A closer examination of the protologue as compared to the use of the name in literature revealed that it has been misapplied to O. elata and O. cardiosperma. The type specimen of O. paraguayensis was presumably destroyed in Berlin, in 1943. Another specimen under this name in the spirit collection at Berlin-Dahlem, collected by Hassler, is undoubtedly O. ficus-indica. It is designated as the neotype of O. paraguayensis.