Tag: botany

New species with heart-shaped fruits inspires a love for biodiversity in Hawai’i

Just in time for Valentine’s Day, botanists from Hawai’i have discovered a new species of plant with small heart-shaped fruits. The new species is a member of the coffee family (Rubiaceae) and part of the genus Coprosma, which occurs across many remote islands of the Pacific Ocean. They named the new Hawaiian species after the symbol of love – calling it Coprosma cordicarpa – meaning the Coprosma with heart-shaped fruit. Their research is published in the open-access journal PhytoKeys.

The botanists, who discovered C. cordicarpa, describe their finding as the result of a loving adventure with Hawaiian biodiversity. It began when Hawai’i’s State Botanist Dr. Maggie J. Sporck-Koehler noticed the little heart-shaped fruits in the Kanaio Natural Area Reserve on the Island of Maui, while attending a work meeting with the Department of Land and Natural Resources (DLNR), Division of Forestry and Wildlife (DOFAW).

One of the primary mandates of DOFAW is to conserve Hawai’i’s native ecosystems and the species that reside in them. As State Botanist, Sporck-Koehler is most often working on issues relating to rare or State and Federally listed threatened and endangered (T&E) plant species. Gaining a better understanding of native Hawaiian plant conservation status and helping to facilitate conservation efforts is one of the main objectives of the work she does for the State. Therefore, when something extraordinary gets under her nose, such as an unusual Coprosmapopulation, she takes a note and a sample.

Sporck-Koehler attempted to identify the species using a key so that she could know what she was looking at. She got to Coprosma foliosa, but was not satisfied. So, she turned to Dr. Jason T. Cantley, who at the time was finishing his PhD research on the genus Coprosma at the University of Hawai’i at Manoa Department of Botany. “I was very taken with it,” Sporck-Koehler told Cantley. “It seemed different than any other [Coprosma] foliosas I’ve seen.”

Then, Cantley concluded that the heart-shaped fruits and other characteristics looked different enough that it was worth it to visit specimens at the Bernice Pauahi Bishop Museum in Honolulu, and then to examine the plants themselves. “We needed to get all our ducks in a row, making sure we knew what we were looking for before we flew to Maui,” Cantley says. “Part of that planning was to think about the long-term conservation of Coprosma cordicarpafrom the start. That’s one reason it was necessary to bring Dr. Chau into this project.”

Dr. Marian M. Chau is the Seed Conservation Laboratory Manager at Lyon Arboretum’s Hawaiian Rare Plant Program in Honolulu. The Seed Conservation Lab‘s mission is to aid in the prevention of extinction of Hawaiian plant species by maintaining a long-term seed bank collection, to propagate plants for use in approved restoration projects, and to conduct research on seed storage and germination for the Hawaiian flora. The Seed Conservation Lab currently stores over 11 million seeds from about 40% of all Hawaiian native species, with the ultimate goal to represent the entire flora with research and/or long-term germplasm collections. This includes under-described biodiversity, like the heart-shaped fruits of C. cordicarpa.

From early on, it was clear that C. cordicarpa was not all that common, as it can only be found on one island. In fact, the botanists determined the new species fell within the International Union for Conservation of Nature (IUCN) Red Vulnerable Category (VU) for extinction risk. The VU is the lowest of the three threatened Red List categories, but indicates that C. cordicarpastill faces threats of extinction in the wild. Chau suggested that they collect seeds for long-term germplasm storage at the Seed Conservation Lab.

Two field adventures on Maui and many herbarium specimen measurements later, the authors were confident they were looking at a new species. All in all, 609 seeds from 32 plants were collected, which are going to help preserve the biodiversity of this species for many years to come.

The authors had a passion for Hawaiian plant biodiversity and conservation well before this project, but it was the discovery of the heart-shaped fruits that brought these three botanists together. With their naming of this new species, they hope to also inspire others with a love for biodiversity that will continue long into the future.

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Original source:

Cantley JT, Sporck-Koehler MJ, Chau MM (2016) New and resurrected Hawaiian species of pilo (Coprosma, Rubiaceae) from the island of Maui. PhytoKeys 60: 33-48. doi: 10.3897/phytokeys.60.6465

Global Plant Conservation’s Phase 1: The world checklist of hornworts and liverworts

Although it was Charles Darwin himself who more than a century ago voiced his intention to support a complete catalogue of all known plant species, such is yet to be realised. In the present paper, however, an international research team present the first ever worldwide checklist of hornworts and liverworts, covering 7485 species from across 396 genera and representing 92 families from the two phyla.

“This group of generally small-sized plants are an important component of the vegetation in many regions of the world, constituting a major part of the biodiversity in moist forest, wetland, mountain and tundra ecosystems,” says Prof. Lars Soderstrom, the lead investigator from the Norwegian University of Science and Technology. The initiative is a part of the Global Strategy for Plant Conservation aiming to list the whole known plant kingdom by 2020. Their work is published in the open-access journal PhytoKeys.

Assembling a working digital list of all known plant species is a staple within the Global Strategy for Plant Conservation, a framework whose ultimate goal is to halt the loss of plant diversity, which, unfortunately, is already a widely recognised fact. Without such a list, few other targets from the strategy would be met, since there would be a lack of baseline information. There would not be accessible and accurate botanical name information to utilise in researches, conservation and sustainability projects. Eventually, it would be impossible for taxonomists to stand their ground in the atmosphere of real-world politics.

“The present checklist is a result of a lengthy endeavour, started in 2008 at an international meeting hosted by The Field Museum, Chicago, and has blossomed to include over 40 authors and numerous individuals worldwide as well as several funding agencies allowing for a joint community effort to bring this to fruition,” says Dr. von Konrat. Working towards a consensus, together they managed to utilise the existing dataset and centralise nomenclature, taxonomy and geography on a global scale – something that had long been deterring such projects.

Liverworts and hornworts are of critical biological and ecological value, and an important component of the vegetation in many regions of the world. Liverworts, for example, are so widespread that can be found all the way from coastal Antarctica to the tundra of the Northern hemisphere and from the quite dry areas of Australia to the rainforest of Amazonia. Growing almost everywhere, they have turned into a microhabitat for a myriad of organisms such as single-celled eukaryotes, protozoa, and a wide range of invertebrates.

Moreover, both liverworts and hornworts play a vital role in the global carbon budget and carbon dioxide exchange. In the past they have even been used as climate change indicators and could be used as such to track potential signs of global warming in future.

In conclusion, the authors remind that their completion of the world checklist of hornwort and liverwort species is only the first phase towards the ultimate goal – a worldwide list of accepted plant names. Now, that there is a “virtual instrument with a linked environment both internally (e.g., within an article) and externally (GBIF, IPNI, Tropicos, Wikispecies, etc.) that will undoubtedly help accelerate taxonomic research,” the scientific world can set its sights on the next step – creating an easily accessible and generally recognised online platform for the supplementary information. It includes over 25,000 publications, almost 39,000 published names, and the over 700,000 geographical observations and the researchers believe that it will draw the attention and help of ecologists, conservationists, scientists from other disciplines and general interest groups.

“The broader accessibility to the wealth of auxiliary data will help augment monographic and revisionary work for many taxonomic groups, aid in identifying the need for increased floristic and survey work in many regions throughout the world, and have broad implications and applications beyond taxonomic research such as conservation science,” the scientists summarise. “However, such an effort can only be successful if it comes with sustained funding and infrastructure rather than depending on an ad hoc commitment by a few individuals, however dedicated”.

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Original source:

Soderstrom L, Hagborg A, von Konrat M, Bartholomew-Began S, Bell D, Briscoe L, Brown E, Cargill DC, Costa DP, Crandall-Stotler BJ, Cooper ED, Dauphin G, Engel JJ, Feldberg K, Glenny D, Gradstein SR, He X, Heinrichs J, Hentschel J, Ilkiu-Borges AL, Katagiri T, Konstantinova NA, Larraín J, Long DG, Nebel M, Pocs T, Felisa Puche F, Reiner-Drehwald E, Renner MAM, Sass-Gyarmati A, Schafer-Verwimp A, Moragues JGS, Stotler RE, Sukkharak P, Thiers BM, Uribe J, Vana J, Villarreal JC, Wigginton M, Zhang L, Zhu R-L (2016) World checklist of hornworts and liverworts. PhytoKeys 59: 1-821.doi: 10.3897/phytokeys.59.6261

Serendipitous orchid: An unexpected species discovered in Mexican deciduous forests

A new elegant orchid species that grows on rocks in deciduous forests of the Pacific slope of Oaxaca state, Mexico, has finally put an end to a long standing dispute among taxonomists. ‘Sheltered’ under the name of a close relative, the plant has been proved by a research team, led by Dr. Leopardi-Verde, to be different enough for a species of its own. Its distinct features, including shape, size and colors, are discussed and published in the open-access journal PhytoKeys.

When scientists Drs. Carlos L. Leopardi-Verde, Universidad de Colima and Centro de Investigacion Cientifica de Yucatan, German Carnevali and Gustavo A. Romero-Gonzalez, both affiliated with Centro de Investigacion Cientifica de Yucatan and Harvard University Herbaria, stumbled across a beautiful orchid in bloom, they found themselves so surprised by its unique colors and forms that later on they chose the specific epithet inopinatus, meaning “unexpected”.

One of the most distinctive characters of the new plant is the yellow labellum patterned with crimson to reddish brown lines. Typically for its species complex, this orchid’s leaves are wide and leatherlike and the flowers are relatively large, showy, and leathery to fleshy-leathery petals and sepals. The color of the flowers varies from bronze-green with dark purple lines near the base to pale pink and creamy white splashed with reddish-brown spots and lines towards the top.

The plant is between 30 and 42 cm tall, while together with its flowers it reaches between 80 and 90 cm. Each branch of the inflorescence bears from 3 to 8 flowers, which bloom between March and July. Having been recorded only from a few sites on the Pacific slope of Oaxaca state, Mexico, the species appears to be rare.

The authors explain the similarities between the new species and its close relatives. They also discuss the long-held confusion about its taxonomic placement. As a result of the study, a hypothesis about hybridization that has played a role in the evolution and origin of the novelty has been refuted.

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Original source:

Leopardi-Verde CL, Carnevali G, Romero-Gonzalez GA (2016) Encyclia inopinata (Orchidaceae, Laeliinae) a new species from Mexico. PhytoKeys 58: 87-95. doi: 10.3897/phytokeys.58.6479