15.Petals white, obovate or subround, base cuneate, apex notched with small incurved lobule, outer petals in umbellule sometimes enlarged (radiant).
花瓣白色,倒或近圆,部楔,先端具缺刻具小弯曲小裂片,小伞花序外部花瓣在放大(辐射状)。
16.Achene straight, with crested or U-shaped appendix at apex or along dorsiventral edges, usually verrucose, invested by shorter persistent perianth.
瘦果直,有具脊或者U附属物在先端或者在背腹边缘,通常多疣,被更窄宿存花被包围。
17.The structure of the root apex of Pyrus betulaefolia Bunge consists of the stelar meristem,cortical cells and the root cap.
杜梨根端结构,可分成中柱分生组织,皮层细胞和根冠。
18.Calyx lobes 4 or 5 or rarely more, usually short, caducous or persistent, apex usually obtuse, rarely connate and then calyptrate.
萼裂片4或5或很少更多,通常短,早落或宿存,先端通常钝,很少合生然后具帽状。
19.Taste buds were found in the epithelium of apex linguae and circumvallate papillae;the taste bud consisted of light cells and dark cells.
云豹味蕾分布于舌尖及轮廓乳突上皮层中,主要由明细胞和暗细胞组成。
20.Seeds elliptic, base sharp, apex retuse, back chalazal knot zonate, with transverse and obtuse ribs, ventral holes furrowed from upper middle to apex.