Abstract: Danaea antillensis Christenhusz, D. kalevala Christenhusz and D. ushana Christenhusz (Marattiaceae) are described as new species from French Guiana and the Lesser Antilles. They are compared with morphologically similar ones and are illustrated with line drawings.
Abstract: Herbarium and field studies have revealed a greater diversity of the neotropical fern genus Danaea
Sm. (Marattiaceae) than previously known. Five new species discovered in Peru are described here. These new
species are Danaea arbuscula, D. cartilaginea, D. lingua-cervina, D. riparia and D. vivax. Line drawings of all these
new species are provided. Danaea elliptica Sm. is synonymized under D. nodosa (L.) Sm. and D. ulei H. Christ is
lectotypified.
Abstract: The neotropical genus Danaea is in revision and some notes on the genus are presented
here. We find that the genus can be divided into three subgroups, based on
morphological characters of the rhizome, stipe articulation and pinna margin serration.
The tree groups are discussed and some taxonomic issues are addressed. The
occurrence of bipinnate D. nodosa is reported from Jamaica, and trifoliate specimens of
D. simplicifolia are reported from French Guiana. The identities of D. alata, D.
jamaicensis, D. jenmanii, D. mazeana, D. media, D. nodosa, D. trifoliata and D. ulei
and their synonyms are discussed. Further studies on the phylogeny, taxonomy and
ecology of Danaea are needed.
Abstract: A sixteenth century Dutch hortus siccus of Brabantian origin has been rediscovered and is described here. The plants preserved in it are identified and most of its history is revealed.
Abstract: A close study of the species of Euphorbia and Pedilanthus in the Guianas resulted in a list of accepted taxa, a key to the species, a new combination (E. cotinifolia subsp. continoides), some new synonyms and the description of a new variety (E. hyssopifolia var. pubescenticocca). Descriptions, distribution and ecology of the new variety and a new combination are given, and keys to the Guianan subspecies of E. cotinifolia and E. heterophylla are provided.
Abstract: It was 1829 before Japanese native plants became more commonly known in European gardens, and they grew many of them first in Holland. Before this date very few Japanese plants were known, because Japan had been closed to all foreign powers except the Dutch and the Chinese.
It was Bavarian physician Philipp F. B. von Siebold (1796-1866), who was send to Japan in the service of the Dutch government, and he collected many new garden plants!
Abstract: Naturalized Japanese plants in the Netherlands introduced by Von Siebold
Between 1829 and 1866 the Bavarian physician Philipp F. B. von Siebold (1796-1866) introduced many garden plants from Japan into Europe, some to be the first Japanese plants to reach Europe. Several of these species became naturalized in the Dutch flora; completely naturalized are Fallopia japonica and Rosa rugosa, and probably also Berberis thunbergii, Cyrtomium falcatum, Ligustrum ovalifolium, Petasites japonica and Rosa multiflora. Elaeagnus pungens, E. umbellata, Lycium chinense, Pachysandra terminalis, Parthenocissus tricuspidata and Spiraea japonica are also sometimes found naturalized.
