Abstract of an article on Arisaema serratum group

Shing Lam slam at CYBERBASE.COM.HK
Wed Sep 3 15:41:54 CEST 1997

Diversity in the Arisaema serratum group.
Corporate Source
Fac. Sci., Tokyo Metropolitan Univ., 1-1 Minamiosawa,
Hachioji, Tokyo 192-03, Japan
Source Journal
Acta Phytotaxonomica et Geobotanica 46(2): 185-208
Publication Year
Language of Article
Language of Summary
Japanese English
The morphological diversity in the Arisaema serratum group
and its satellite groups, which are generally characterized
by the long pseudostem and pedate leaves with well developed
rachises between leaflets, is summarized. Based on a comparison
of local populations throughout the distribution ranges, an
attempt is made to recognized morphological units that are
presumed to have a genetic bases, although morphological
intermediates are sometimes found. The Arisaema serratum group
is primarily divided into three subgroups. Subgroup 1 is
characterized by late flowering, the spathe opening much later
than the leaves and the spathe blade covered with fine distinct
raised lines on the ventral side and includes morphological
units previously named A. serratum, A. longilaminum
(A. sinanoense), A. peninsulae, A. planilaminum,
A. solenochlamys, A. takedae (A. izuense, A. sowoense) and
several additional unnamed units. Subgroup 2 is characterized
by early flowering, the spathe opening much earlier than the
leaves and the spathe blade smooth on the ventral side and
includes A. japonicum (A. takeshimense) and A. mayebarae.
Subgroup 3 is intermediate between the two but the spathe blade
is basically green and frequently has small trichomes on the
ventral side and margins and includes A. angustatum and
several unnamed units.

- From Biological Abstract.

Shing Lam

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