An undescribed species of Phaleria Jack from Sulawesi has been uncovered during ongoing herbarium studies of Thymelaeaceae and is still only known from the type. The species, P. stevensiana Z. S. Rogers, is endemic to a single limestone mountain in South Sulawesi and assigned a preliminary IUCN conservation status of Critically Endangered (CR). Morphologically, it is easily distinguished from the widespread P. octandra (L.) Baill. and P. capitata Jack by its linear-lanceolate leaves (length:width ratios ca. 11–20:1) and distinctive venation pattern, composed of ca. 29 to 35 pairs of secondary veins that diverge from the midrib of the blade at ± 90° angles; the contrasted species have much broader leaves with substantially fewer secondaries. Variation in other characters related to inflorescences, flowers, and fruits is also discussed, as is their taxonomic value. Moreover, all four species of Phaleria occurring in Sulawesi are allopatric, separated geographically and ecologically. The new species, overlooked in several herbaria since 1980, raises the number of Sulawesian Thymelaeaceae species to 10 and the total number of Phaleria species to ca. 25.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.