TAILIEUCHUNG - On the taxonomic identity of Arisaema pierreanum Engl. (Araceae) in Vietnam
The taxonomic identity of the rare Arisaema pierreanum Engl. has been disagreed by botanists, mostly due to the lack of diagnostic characteristics of its female inflorescence. In this paper, a detailed description of the species is provided based on our new living collections from the type location, Ba Den Mountain, by which we reconfirm its specific status and eliminate a former question about its possible conspecific form of A. roxburghii Kunth and A. harmandii Engl. | Science & Technology Development, Vol 19, 2016 On the taxonomic identity of Arisaema pierreanum Engl. (Araceae) in Vietnam Van Hong Thien Industrial University of Ho Chi Minh City Institute of Tropical Biology, Vietnam Academy of Science and Technology Nguyen Phi Nga University of Science, VNU-HCM Luu Hong Truong Southern Institute of Ecology, Vietnam Academy of Science and Technology (Received on June 5th 2015, accepted on 26th September 2016 ) ABSTRACT The taxonomic identity of the rare Arisaema from the type location, Ba Den Mountain, by pierreanum Engl. has been disagreed by which we reconfirm its specific status and botanists, mostly due to the lack of diagnostic eliminate a former question about its possible characteristics of its female inflorescence. In this conspecific form of A. roxburghii Kunth and A. harmandii Engl. paper, a detailed description of the species is provided based on our new living collections Keywords: Araceae, Arisaema pierreanum, Arisaema roxburghii, Arisaema harmandii, Ba Den Mountain, Vietnam INTRODUCTION Arisaema pierreanum Engl. was first described in 1920 by Engler based on Pierre’s collection from Ba Den Mountain, southern Vietnam in 1869 [2]. No more collections of this species were known until a recent report by Nguyen et al. (2014), who revisited the mountain to collect the plant in 2013 [9]. During this duration, the taxonomic status of the species was disagreed by other authors. Gagnepain (1942) [4], Murata (1984) [7] accepted it as a good species. However, in their recent revision of the genus, Gusman and Gusman (2006) reduced it to be a synonym of A. roxburghii Kunth because: (1) Nicolson (1999) determined that A. harmandii Engl. was synonym of A. roxburghii, and (2) they supposed that the types of A. pierreanum and A. harmandii were collected from the same place, . Ba Den Mountain, NW of Ho Chi Minh City in southern Vietnam, and thus both taxa were conspecific [6]. Nguyen et al. (2014) disagreed Trang
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