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Article
Published: 2021-08-20

Begonia tinuyopensis (sect. Petermannia, Begoniaceae), a new species from Zamboanga Del Norte, Philippines

Department of Forestry, College of Forestry and Environmental Studies, Western Mindanao State University, San Ramon, Talisayan, Zamboanga City, Philippines 7000. Forest Biological Sciences Department, College of Forestry and Environmental Science, Central Mindanao University, Bukidnon, Philippines, 8714.
Forest Biological Sciences Department, College of Forestry and Environmental Science, Central Mindanao University, Bukidnon, Philippines, 8714.
Philippine Taxonomic Initiative, Inc., Botanica Building, El Nido, Palawan, Philippines.
Philippine Taxonomic Initiative, Inc., Botanica Building, El Nido, Palawan, Philippines.
Begonia mearnsii endemic Malesia riparian taxonomy Eudicots

Abstract

Begonia tinuyopensis is described and illustrated as a new species from Zamboanga del Norte, Philippines. This new species resembles B. mearnsii by having a decumbent stem, scattered hairs over the entire plant, terminal inflorescence bearing 2 staminate tepals and 5 pistillate tepals. However, Begonia tinuyopensis is distinct by having sparse pilose (vs. matted with long brown hairs) stems, ovate (vs. suborbicular to subreniform) leaves and glabrous (vs. densely pubescent) ovary. We assign B. tinuyopensis as Endangered (EN) following IUCN Red List Criteria.

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