Two taxonomically novel Aridarum species, A. kazuyae and A. orientale, are described from Kalimantan Timur, Indonesian Borneo. They are most similar to A. burttii from Sarawak, and together with A. minimum from Kalimantan Barat represent a morphotaxon, here called the Burttii Complex, defined by staminate flowers comprised of one stamen with an obliquely excavated expanded connective, hemispherical interstice staminodes, a spathe limb deliquescing acroscopically from its junction with the lower persistent portion and leaf blades with adaxially prominently raised primary lateral veins. Recognition of the new species proposed here takes the genus Aridarum to 12 accepted species. A key to all Aridarum species is provided, the two new species are illustrated and a comparison plate of the spadices of the four species assigned to the Burttii Complex as well as notes on the defining morphological features of this species group and some brief observations on pollination are given.
How to translate text using browser tools
17 December 2012
Studies on Schismatoglottideae (Araceae) of Borneo XXIV — Two new species of Aridarum from Kalimantan, and notes on the Aridarum Burttii Complex
Wong Sin Yeng,
Peter C. Boyce,
Low Shook Ling
J. Bogner
&
A. Hay
2000:
Schismatoglottideae in Malesia II — Aridarum, Bucephalandra, Phymatarum and Piptospatha. — Telopea 9: 183–194. Google Scholar
M. Gibernau
,
M. Chartier
&
D. Barabé
2010: Recent advances towards an rvolutionary comprehension of Araceae pollination. — Pp. 101–114 in:
O. Seberg
,
G. Petersen
,
A. S. Barfod
&
J. I. Davis
(ed.),
Diversity, phylogeny & evolution in the monocotyledons. — Denmark: Aarhus University. Google Scholar
H. Okada
2006: A new species of Aridarum, Schismatoglottideae, from the Muller Range, Central Kalimantan, Indonesia. — Acta Phytotax. Geobot. 57: 61–64. Google Scholar
S. Y. Wong
&
P. C. Boyce
2007: Studies on Schismatoglottideae (Araceae) of Borneo II: Aridarum crassum, a new species from Sarawak, Malaysian Borneo. — Gard. Bull. Singapore 58: 279–286. Google Scholar

Willdenowia
Vol. 42 • No. 2
Dec 2012
Vol. 42 • No. 2
Dec 2012
Aridarum kazuyae
Aridarum orientale
aroids
Indonesia
rheophyte
taxonomy