Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex

Two taxonomically novel Aridarum species are described from Kalimantan Barat, Indonesian Borneo: A. hippocrepis P. C. Boyce & S. Y. Wong and A. uncum P. C. Boyce & S. Y. Wong. Together with A. rostratum Bogner & A. Hay (also Kalimantan Barat) these form a morphologically distinct group o...

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Main Authors: Boyce, P.C, Wong, Sin Yeng
Format: E-Article
Language:English
Published: BioOne Journals Online 2013
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Online Access:http://ir.unimas.my/id/eprint/7180/1/Studies%20on%20Schismatoglottideae%20%28Araceae%29%20of%20Borneo%20XXVII%20%E2%80%93%20New%20species%20of%20Aridarum%2C%20and%20notes%20on%20the%20Aridarum%20Rostratum%20Complex%2810%25%29.pdf
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spelling my.unimas.ir.71802015-09-15T00:40:23Z http://ir.unimas.my/id/eprint/7180/ Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex Boyce, P.C Wong, Sin Yeng QK Botany SB Plant culture Two taxonomically novel Aridarum species are described from Kalimantan Barat, Indonesian Borneo: A. hippocrepis P. C. Boyce & S. Y. Wong and A. uncum P. C. Boyce & S. Y. Wong. Together with A. rostratum Bogner & A. Hay (also Kalimantan Barat) these form a morphologically distinct group of unistaminate Aridarum species, here informally dubbed the Aridarum Rostratum Complex, differing from those of the (also unistaminate) Burttii Complex by the inflorescence pendent on an arching to pendent wiry peduncle, by staminate flowers lacking a distally expanded connective, the presence of horseshoe-shaped interstice staminodes that expand laterally post pistillate anthesis and prior to staminate anthesis, by the spathe limb hardly opening at pistillate anthesis and deliquescing acroscopically during staminate anthesis, and by the narrowly campanuliform (not salverform) persistent lower spathe. The Rostratum Complex is further differentiated by leaf blades lacking the adaxially conspicuously raised primary lateral veins that are a characteristic of the Burttii Complex. Recognition of these two new species takes the genus Aridarum to 14 accepted species. An emended species description of A. rostratum is presented and a key to species of the Rostratum Complex is provided. All species are illustrated from living plants, and a comparative plate of the spadices of the three species assigned to the Rostratum Complex is also provided. BioOne Journals Online 2013 E-Article PeerReviewed text en http://ir.unimas.my/id/eprint/7180/1/Studies%20on%20Schismatoglottideae%20%28Araceae%29%20of%20Borneo%20XXVII%20%E2%80%93%20New%20species%20of%20Aridarum%2C%20and%20notes%20on%20the%20Aridarum%20Rostratum%20Complex%2810%25%29.pdf Boyce, P.C and Wong, Sin Yeng (2013) Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex. Willdenowia, 43 (1). pp. 91-99. ISSN 0511-9618 http://www.aroid.org/gallery/wong/Schismatoglottideae%20of%20Borneo%20XXVII%20-%20Aridarum%20Rostratum%20Complex%20-%20%5BWilldenowia%2043%2C%2091-99%5D%20-%20Boyce%20%26%20Wong%20%282013%29.pdf
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic QK Botany
SB Plant culture
spellingShingle QK Botany
SB Plant culture
Boyce, P.C
Wong, Sin Yeng
Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
description Two taxonomically novel Aridarum species are described from Kalimantan Barat, Indonesian Borneo: A. hippocrepis P. C. Boyce & S. Y. Wong and A. uncum P. C. Boyce & S. Y. Wong. Together with A. rostratum Bogner & A. Hay (also Kalimantan Barat) these form a morphologically distinct group of unistaminate Aridarum species, here informally dubbed the Aridarum Rostratum Complex, differing from those of the (also unistaminate) Burttii Complex by the inflorescence pendent on an arching to pendent wiry peduncle, by staminate flowers lacking a distally expanded connective, the presence of horseshoe-shaped interstice staminodes that expand laterally post pistillate anthesis and prior to staminate anthesis, by the spathe limb hardly opening at pistillate anthesis and deliquescing acroscopically during staminate anthesis, and by the narrowly campanuliform (not salverform) persistent lower spathe. The Rostratum Complex is further differentiated by leaf blades lacking the adaxially conspicuously raised primary lateral veins that are a characteristic of the Burttii Complex. Recognition of these two new species takes the genus Aridarum to 14 accepted species. An emended species description of A. rostratum is presented and a key to species of the Rostratum Complex is provided. All species are illustrated from living plants, and a comparative plate of the spadices of the three species assigned to the Rostratum Complex is also provided.
format E-Article
author Boyce, P.C
Wong, Sin Yeng
author_facet Boyce, P.C
Wong, Sin Yeng
author_sort Boyce, P.C
title Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
title_short Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
title_full Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
title_fullStr Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
title_full_unstemmed Studies on Schismatoglottideae (Araceae) of Borneo XXVII – New species of Aridarum, and notes on the Aridarum Rostratum Complex
title_sort studies on schismatoglottideae (araceae) of borneo xxvii – new species of aridarum, and notes on the aridarum rostratum complex
publisher BioOne Journals Online
publishDate 2013
url http://ir.unimas.my/id/eprint/7180/1/Studies%20on%20Schismatoglottideae%20%28Araceae%29%20of%20Borneo%20XXVII%20%E2%80%93%20New%20species%20of%20Aridarum%2C%20and%20notes%20on%20the%20Aridarum%20Rostratum%20Complex%2810%25%29.pdf
http://ir.unimas.my/id/eprint/7180/
http://www.aroid.org/gallery/wong/Schismatoglottideae%20of%20Borneo%20XXVII%20-%20Aridarum%20Rostratum%20Complex%20-%20%5BWilldenowia%2043%2C%2091-99%5D%20-%20Boyce%20%26%20Wong%20%282013%29.pdf
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score 13.209306