A New Species of Diploid Quillwort (Isoetes, Isoetaceae, Lycophyta) from Lebanon

被引：12
|
作者：
Bolin, Jay F. [1 ,2 ]
Bray, Rebecca D. [1 ]
Musselman, Lytton John [1 ]
机构：
[1] Old Dominion Univ, Dept Biol Sci, Norfolk, VA 23529 USA
[2] Smithsonian Inst, Dept Bot, Washington, DC 20013 USA
来源：
NOVON | 2011年 / 21卷 / 03期
关键词：
Isoetaceae; Isoetes; IUCN Red List; Lebanon; Lycophyta;
D O I：
10.3417/2010028
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A new species, Isoetes libanotica Musselman, Bolin & B. D. Bray (Isoetaceae, Lycophyta), is described from Akkar District of northern Lebanon. It is a seasonal terrestrial species of basaltic soils, diploid (2n = 22), with complete velum coverage. Megaspore diameter ranges from 338 to 477 mu m with remote, low tuberculate ornamentation and a low to obsolete equatorial girdle; microspore length ranges from 25 to 30 mu m, with echinate ornamentation. At the type locality of I. libanotica, two other Isoetes L. species occur sympatrically. These superficially similar Isoetes species can be differentiated from I. libanotica using megaspore characters; I. duriei Bory has larger alveolate megaspores and I. olympica A. Braun has a prominent equatorial girdle.
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收藏
页码：295 / 298
页数：4
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