Seed morphology of Kadsura Juss.(Schisandraceae) in relation to its taxonomic significance

doi:10.7523/j.issn.2095-6134.2002.6.003

›› 2002, Vol. 40 ›› Issue (6): 505-510.DOI: 10.7523/j.issn.2095-6134.2002.6.003

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Seed morphology of Kadsura Juss.(Schisandraceae) in relation to its taxonomic significance

BI Hai-Yan, LIN Qi, LIU Chang-Jiang, ZHAO Jian-Cheng

Received:1900-01-01 Revised:1900-01-01 Online:2002-11-10
Contact: BI Hai-Yan

Abstract

Abstract:

Seed macromorphology and seed-coat micromorphology of 11 species of Kadsura

(Schisandraceae) represented by 36 samples were observed under light microscope (LM) and scan-

ning electron microscope (SEM). The seeds are reniform, ellipsoid, cordiform or reniform-oblate in

shape. Under SEM the surface pattern of the seeds shows some variation among the species and

three types have been observed, i.e. (1) Nearly Smooth, (2) Areolate and (3) Reticulate. In the

type 1, the seed surface is nearly smooth. This type was found to occur in two species, viz. K.

borneensis and K. lanceolata. In the type 2, the seed surface is areolate with prominent lumina and

sunken muri. This type was found to occur in K. coccinea and K. verrucosa. In the type 3, the

seed surface is reticulate with sunken lumina and prominent muri. This type is the commonest in the

genus, occurring in seven species, viz. K. heteroclita, K. induta, K. japonica, K. oblongifo-

lia, K. angustifolia, K. scandens and K. marmorata. Seed-coat micromorphological features

seem to be quite constant within species and thus are of significant value in the delimitation of some

species. Evidence from seed-coat micromorphological features supports the treatment of reducing K.

polysperma and K. interior to K. heteroclita and of reducing K. longipedunculata to K. japoni-

ca. Brief speculation on the evolutionary trend of the seed-coat micromorphological features in the

genus Kadsura is discussed.

Key words: Kadsura Juss., Seed morphology, Seed-coat micromorphology, Taxonomy

BI Hai-Yan, LIN Qi, LIU Chang-Jiang, ZHAO Jian-Cheng. Seed morphology of Kadsura Juss.(Schisandraceae) in relation to its taxonomic significance[J]. , 2002, 40(6): 505-510.

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Seed morphology of Kadsura Juss.(Schisandraceae) in relation to its taxonomic significance

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