Registered users receive a variety of benefits including the ability to customize email alerts, create favorite journals list, and save searches.
Please note that a BioOne web account does not automatically grant access to full-text content. An institutional or society member subscription is required to view non-Open Access content.
Contact helpdesk@bioone.org with any questions.
Abstract. Amaranthus pakai Faccenda & N. Bayón (Amaranthaceae), a new Hawaiian endemic species from the main islands, is described. It is most probably closely related to A. brownii Cristoph. & Caum, an extinct species from Nihoa Island. It also morphologically resembles A. interruptus R. Br. and A. viridis L. Amaranthus pakai differs from these species in its leaves with elliptical lamina, and pistillate flowers with three widely spathulate sepals, which are longer than the fruits. The first collections date back to the 19th century and suggest that this species was formerly rather widespread across the main Hawaiian Islands, but the population probably crashed during the 1800s. However, these early specimens were misidentified until recently. Amaranthus pakai was last seen in the wild in 2014 and, following its assessment against the IUCN criteria, is considered Critically Endangered, as only 30 to 40 plants were seen at that time.
A specimen collected from Nepal in 1821 by Wallich (2707.B in the Wallich Catalogue), stored at the Herbarium of the Royal Botanic Gardens Kew (K), is designated here as the lectotype of Aristolochia saccata Wall. In addition, the nomenclature for A. saccata var. dilatata Hook. f., A. dilatata N. E. Br., and Isotrema dilatatum (N. E. Br.) X. X. Zhu, S. Liao & J. S. Ma is considered. Since the name A. dilatata is based on A. saccata var. dilatata Hook. f., it is regarded that I. dilatatum was validly published as a new combination based on A. saccata var. dilatata Hook. f., and the correct author citation is “(Hook. f.) X. X. Zhu, S. Liao & J. S. Ma.”
Una nueva especie del estado de Guerrero, Hoffmannia tlapaneca Lozada-Pérez (Rubiaceae), es descrita e ilustrada. Esta nueva especie se relaciona morfológicamente con H. cuneatissima B. L. Rob. y H. nicotianifolia (M. Martens & Galeotti) L. O. Williams, pero difiere en el tipo de indumento, caracteres florales y de fruto.
A new species from the state of Guerrero, Hoffmannia tlapaneca Lozada-Pérez (Rubiaceae), is herein described and illustrated. This new species is morphologically similar to H. cuneatissima B. L. Rob. and H. nicotianifolia (M. Martens & Galeotti) L. O. Williams, but differs in the type of indumentum and floral and fruit features.
An elegant new species of Fagaceae, Lithocarpus graniticus S. P. Chen & Y. Z. Lin, was discovered in the valley of a granite mountain in southern Fujian, China. The new species is most similar to L. cucullatus C. C. Huang & Y. T. Chang in having grayish-white waxy scales on abaxial leaf surfaces, cupules enclosing more than 1/2 of the nut, and the seed scar convex and ca. 1/3 of the nut. It is distinguished by its cupular cupule, relatively densely pilose inflorescences, ovate or ovate-elliptic leaves, and sparsely pilose indument on branches and abaxial surfaces of young leaves. Photographs, a line drawing, and a description of the new species are provided.
A new species of the Malagasy endemic genus Apodocephala Baker is described and illustrated. Apodocephala odora J. Calvo & Callm. is thus far known only from the type collection and comes from the Loky Manambato (Daraina) area in northeastern Madagascar. It belongs to the species group displaying geniculate-rostrate achenes but differs, among other characters, in having involucres obscurely biseriate with bracts of similar length and glandular leaves. It grows in medium-elevation, moist evergreen forest. The new species' risk of extinction is preliminarily assessed as “Vulnerable” in accordance with the IUCN Red List categories and criteria.
Une nouvelle espèce du genre endémique malgache Apodocephala Baker est décrite et illustrée. Apodocephala odora J. Calvo & Callm. n'est jusqu'à présent connue que par la collection type et provient de la région de Loky Manambato (Daraina), au nordest de Madagascar. Elle appartient au groupe d'espèces présentant des akènes géniculés-rostrés mais diffère, parmi d'autres caractères, par des involucres obscurément bisériés avec des bractées de longueur similaire et des feuilles glandulaires. Elle pousse dans les forêts denses humides sempervirentes de moyenne altitude. La nouvelle espèce est provisoirement évaluée comme “Vulnérable” conformément aux catégories et critères de la liste rouge de l'UICN.
Dendrosenecio (Hauman ex Hedberg) B. Nord. comprises 11 species of giant-rosette plants that grow on tropical mountains in east and central Africa. Commonly known as giant senecios or giant groundsels, the size of these plants makes all herbarium specimens inherently fragmentary, and their recent, rapid, adaptive radiation means that scant DNA variation was detected in the original molecular systematic study. The provisional 1993 classification adopted a conservative approach for two taxa. In this paper, the new combinations of D. adnivalis (Stapf) E. B. Knox subsp. petiolatus (Hedberg) E. B. Knox and D. elgonensis (T. C. E. Fr.) E. B. Knox subsp. amblyphyllus (Cotton) E. B. Knox emend that treatment to more accurately reflect the evolutionary history of these plants.
Gonolobus piurensis W. D. Stevens & Arbeláez, a new species from Peru, is described and illustrated. This new species is known from a single collection prepared more than 40 years ago in a dry, west Andean valley. It is not at all similar to any previously described species from South America, but rather is morphologically closest to G. barbatus Kunth, abundant and somewhat weedy from southern Mexico to Costa Rica.
This article is only available to subscribers. It is not available for individual sale.
Access to the requested content is limited to institutions that have
purchased or subscribe to this BioOne eBook Collection. You are receiving
this notice because your organization may not have this eBook access.*
*Shibboleth/Open Athens users-please
sign in
to access your institution's subscriptions.
Additional information about institution subscriptions can be foundhere