C. M. Wilmot-Dear

Morphology and anatomy of fruits in Pouzolzia (Urticaceae) in relation to taxonomy

The pericarp and perianth in fruits of 27 of the 35 currently accepted species of the genus Pouzolzia (Urticaceae) were studied. The pericarp is crustaceous and always entirely sclerified. Cell walls are impregnated with silica, lignin and/or tannins, colouring the pericarpium. Cells of the innermost mesocarp layer have amorphous solid contents. Pericarp structure is of a consistent basic pattern throughout the genus. The fruiting perianth is crustaceous and generally easy to detach from the pericarpium. Fruiting perianth structure is much more variable than pericarp structure, differing not only between species but sometimes also within a species or an individual plant, giving rise to fruit polymorphism in certain taxa. Outgrowths of the perianth give rise to surface sculpture, ribs, or wings. Fruits were classified into seven groups on the basis of the number and structure of pericarp cell layers, the presence and distribution of tannins and the structure of the innermost mesocarp layer. These seven groups of species differ from one another also in fruiting perianth anatomy: the groups correlate well with classification based on gross morphology. Characters of both perianth and pericarp clearly support the distinction between the genera Pouzolzia, Boehmeria and Pipturus. Within Pouzolzia they also support the distinction between sections Pouzolzia and Memorialis. Certain adaptive features are discussed and evolutionary trends suggested.

Cypholophus decipiens (Urticaceae) - taxonomy and range of a species often misplaced in Boehmeria

Summary. Cypholophus decipiens H. J. P. Winkl. and C. brassii Diels, (Urticaceae) both described from New Guinea, are considered conspecific with the earlier, but illegitimate Boehmeria acuminata Wedd., described from New Caledonia. The combined taxon, to be named C. decipiens, has been reported also from Ponape in the Caroline Is., and is here shown to be widespread in the Solomon Is. and in Vanuatu. It has diagnostic characters of Cypholophus, and should be placed in that genus in spite of its suberect or pendulous leafless branches with clusters of male flowers, a structure that looks like the inflorescences in some species of Boehmeria. The species is described and mapped from ample material which has

NEW SPECIES IN OLD WORLD BOEHMERIA (URTICACEAE)

Four new species of Boehmeria (Urticaceae) are described and named: Boehmeria listeri Friis & Wilmot-Dear and B. manipurensis Friis & Wilmot-Dear from the eastern part of the Himalayas, B. leptostachya Friis & Wilmot-Dear from southern China (Yunnan), Thailand and northern Sumatra, and B. subintegra Friis & Wilmot-Dear from Papua New Guinea. The species are illustrated and mapped and their habitat ranges are described, and conservation assessments have been produced for all.

Pouzolzia rugulosa transferred from Boehmeria, and the distinction between Boehmeria and Pouzolzia (Urticaceae).

Pouzolzia rugulosa (Wedd.) Acharya & Kravtsova, comb. nov. , is transferred from the genus Boehmeria on the grounds of the anatomy and morphology of the fruit, correlated with molecular data. A revised set of anatomical and morphological characters is provided to distinguish between Boehmeria and Pouzolzia . Pouzolzia rugulosa shares morphological similarities with a group of serrate-leaved taxa in that genus known from Asia and Oceania. It is a shrub or small tree and is found along the southern slopes of the Himalayas from Himachal Pradesh in northern India to the mountains of northern Burma. It occurs in forest at elevations of up to 1900 m, mainly at forest edges and in clearings. A full description of Pouzolzia rugulosa , including drawings and SEM images of the fruit, is provided, together with a key.

DEBREGEASIA AUSTRALIS SP. NOV. (URTICACEAE), WITH A NEW SYNOPSIS OF AND A NEW KEY TO THE GENUS

A new species in the Old World genus Debregeasia (Urticaceae), D. australis Friis, Wilmot-Dear & C.J.Chen, based on material from forest habitats in eastern Queensland, Australia, is described, illustrated and mapped. A new synopsis of the genus and a new key to species recognised is provided as a supplement to the revision of Debregeasia by C. M. Wilmot-Dear in 1988. Debregeasia orientalis, described from China since 1988, is accepted, species from China and Bangladesh (D. elliptica and D. dentata) are reinstated, and other taxonomic changes made since the revision of 1988 are summarised.

Pilea nguruensis (Urticaceae), a new species from the Eastern Arc Mountains, central Tanzania

SummaryA new and distinctive species, Pilea nguruensis Friis & I. Darbysh. (Urticaceae), is described based on material collected in 2006 from moist montane forest in the Nguru South Forest Reserve, Nguru Mountains, central Tanzania, and its conservation status is assessed. The paper supplements a revision of the African species of Pilea Lindl. made by Friis in 1989, and accounts of Pilea for a range of other African floras including the Flora of Tropical East Africa.

Nomenclatural corrections to the taxonomic revision of The Old World species of Boehmeria (Urticaceae, tribus Boehmerieae) by Wilmot-Dear & Friis (2013)

This nomenclatural note, a sequel to a recently published taxonomic revision of the Old World species of the genus Boehmeria (Urticaceae), establishes: 1) a holotype of B. maugereti, synonym of taxon no. 8b in the revision (B. clidemioides var. diffusa); 2) B. zollingeriana Wedd. var. blinii (H.Lev.) C.J.Chen in Chen et al. (2003) as the correct name for the variety named in the revision as B. zollingeriana var. podocarpa in Chen et al. (2003); 3) that the combination B. spicata, based on Urtica spicata, is not illegitimate, as stated in the revision in synonymy of B. japonica and in an attached note; 4) a corrected synonymy for B. splitgerbera and the designation of a lectotype for Splitgerbera japonica and its nomenclatural synonyms; and 5) identifications of types for a number of excluded names: Boehmeria amaranthus, B. bodinieri, B. cavaleriei, B. martini and B. vanioiti.

POUZOLZIA FLORESIANA (URTICACEAE), A NEW SPECIES FROM FLORES, NUSA TENGGARA TIMUR (LESSER SUNDA ISLANDS), INDONESIA

Pouzolzia floresiana Friis & Wilmot-Dear (Urticaceae) is described and illustrated on the basis of a single collection from the western part of the Indonesian island of Flores. The species is a thick-stemmed herb, similar in habit to Pouzolzia thailandica , but differs in having axillary flower clusters and broadly winged fruiting perianths. The description of the new species supplements a revision of the Old World taxa of Pouzolzia by the two authors published in 2006.

Notes on Mucuna (Leguminosae: Phaseoleae) in Thailand

SummaryThe fruit of Mucuna thailandica is described for the first time. Information on flower colour and inflorescence architecture of M. oligoplax is amended. A white colour variant of M. revoluta is recorded.