Rhus属樹種

The greater or less content of wax in Japanese Rhus fruits can estimated by measuring the area of tissue containg wax in the section of mesocarp just before their full ripeness. On the other side, if we measure the volume and weight of mesocarp and seed in the fruit when dry and ripe, as compared with the weight and volume of the fruit itself, we can judge much clearer the greater or lesser content of wax in the mesocarp' by noticing the relative size of the mesocarp. According to my measurement, the volume and weight of the mesocarp in the fruit of Japanese Rhus plants are the greatest in the BudOhaze, next in rank come Showaf ukuhaze and Ikihaze, subspecies of Rhus succedanea; while among the other Rhus plants excepted Rhus saccedanea, Rhus vernicifera shows the largest volume and weight, and next in order come Rhus silvestris, Rhus Toxicodendron var. vulgaris and Rhus trichocarpa. The mesocarp of Showafukuhaze, subspecies of Rhus succedanea, and Rhus Toxicodendron var. vulgaris are large in proportion to he size of the fruit, but on the contrary in Rhus silvestris and Rhus trichocarpa the mesocarp is small in comparison. The content of wax extracted from the fruit is the largest in the fuit of the Budohaze among the Rhus succedanea subspecies, and in the fruit of Rhus vernicifera among all other Rhus plants. The percentage yield of wax relative to the weight of the fruit is the greatest in the fruits of Showa fukuhaze among the Rhus succedanea subspecies, and in Rhus Toxicodendron var. vulgaris. On the contrary it is amall in Rhus silvestris and Rhus trichocarpa. Judging from the above facts, the quantity of wax yielded from the fruit is proportionate to the size of the mesocarp; and the size of the mesocarp is related to the size of the fruit and seed, especially that of the seed. It follows that the percentage of wax yielded estimated by the relative size of the various parts of tissue on the section of the fruits.