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Short Report

ScienceAsia 15 (1989): 267-279 |doi: 10.2306/scienceasia1513-1874.1989.15.267

 

SEEDLINGS OF LAXMANNIA GRACILIS R.BR. (ANTHERICACEAE): FORMS AND EVOLUTIONARY VALUE

 

A.THONGPUKDEE

ABSTRACT: Laxmannia gracilis R.Br. germinates two types of seedlings, type A and type A1. The latter has permanently folded cotyledon, "a hair-pin-like structure", and a higher occurrence than the former. The vascular system of the said structure indicates an evolutionary trend of seedling form from type A to type Al while those of the roots are not specificantly different.

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Department of Biology, Faculty of Science, Silpakorn University, Nakorn Pathom, Thailand.

Received 29 June 1989