Figure 1

Morphological and Biological pattern of H. Willd. (A-C) Flower of H. chinensis, H. chinensis Batal. var. crenata and H. japonica respectively; (bar 1 cm). (D-E) Male Flowers of H. Chinensis and its’ transverse section, in which purple green flowers growing on midvein of leaf blade; (D: 5 mm; E: bar 0.1 mm). (F-G) Female Flower of H. Chinensis and its’ longitudinal section, in which the stigma was four divided; (F: bar 5 mm; G: bar 1 mm). (H) Transverse section of the top part of H. japonica leaf, in which one vascular is observed; (bar 1 mm) (I). Transverse section of the based part of H. japonica leaf, in which two vascular bundles are observed (obvious xylem, cambium and phloem are indicated);(bar 1 mm) (J-K). Stink Bug and Ant are visiting the Helwingia flowers in pollination.(bar 1 cm) Note: Po Pollen sac; An Anther; PG Pollen Granule; Ta Tapetum. OW Ovary Wall; Ov Ovule; Pl Placenta; OC Locule; ES Embryo Sac; St Stigma.