15.Petals white, obovate or subround, base cuneate, apex notched with small incurved lobule, outer petals in umbellule sometimes enlarged (radiant).
白色,倒卵或近圆,基部楔,具缺刻的具小的弯曲的小裂片,小伞序的外部在放大(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附属物在或者在背腹边缘,通常多疣,被更窄的宿存被包围。
17.The structure of the root apex of Pyrus betulaefolia Bunge consists of the stelar meristem,cortical cells and the root cap.
杜梨根的结构,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,通常钝的,很少合生然后具帽状的。
19.Taste buds were found in the epithelium of apex linguae and circumvallate papillae;the taste bud consisted of light cells and dark cells.
云豹味蕾分布于舌及轮廓乳突的上皮层中,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.