MORPHOLOGICAL CHARACTERISTICS, ANATOMICAL STRUCTURE OF Paris polyphylla var chinensis AND SOIL PROPERTIES IN BAC SON, LANG SON

Abstract

The species belonging to the genus Paris are recorded with high medicinal values. They distribute in geographic areas in Vietnam. Plants of P. polyphylla var. chinensis grow in Bac Son- Lang Son has 40- 50 cm tall approximately. The leaves, which are in a whorl at the top of the stem with 5 oval backwards. Sepals form 5, green, lancelate. Corolla is yellow-green, narrow straight, longer than the sepals; many stamens, form 16; spherical ovule, with raised burrs, 1 compartment; short stigma, extended base, purple. Stigma head lobes 5. While the vegetative organs have the same three main types of tissue with epidermis, soft tissue and vascular system, there are differences in the types of arrangement of vascular system. The types of soil in the experimental plot are two types of clay soil that contains 0.08% to 0.14% total nitrogen, 0.08% to 0.15% total phosphate, 1.57% to 2.30% total potassium and 1.48% to 1.86% humus. They have ideal pH values of between 5.68 - 6.71 which is slightly acidic. The suitability evaluation shows that two types of soil is moderately suitable due to its nutrient with CEC of 14.97 me / 100 g. The relationship between soil and development of genus Paris is needed to be further elucidated.