Analysis of Genetic Diversity of Trigonobalanus doichangensis (Fagaceae) by RAPD Current distribution, population attributes and biological characters of Trigonobalanus doichangensis in relation to its conservation On the Pollen Morphology and Systematic Position of Trigonobalanus doichangensis Preliminary Study on Germination of Trigonobalanus doichangensis Blooming and Fruiting Habits,Microspore Genesis and Development of Male Gametes of Trigonobalanus doichangensis