56	Opuntia Mill.	Opuntia stricta (Haw.) Haw. var. dillenii (Ker-Gawl.) Benson	Cactaceae	Except the real blue and black, there are all kinds of flower colors, and they are ever-changing. As the red flower, its color is different depending on the type. Many types of petals have a metallic luster and are very eye-catching. Many types of pistil stigma and stamen filaments have bright colors, especially some species of Echinocereus and Notocactus. The stigma is green and purple, with a velvety luster, splendouring with the petals, which is so beautiful
57	Incarvillea	Incarvillea younghusbandii Sprague	Bignoniaceae	Red and white
58	Crocus	Crocus sativus L.	Iridaceae	Light blue, red purple or white
59	Populus	Populus cathayana Rehd.	Salicaceae	Gray green, dark gray when old, cracked. Branches cylindrical, with angular prism sometimes. The branch is olive green when young, later turns into orange to grayish yellow, glabrous. Buds long conical, glabrous, purple brown or yellow brown, with mucilage
60	Salix	Populus × beijingensis W. Y. Hsu	Salicaceae	Bark grayish green, gradually turning into greenish gray, smooth; bark pores round or oblong, dense, ovate or broadly ovoid crown. Side shoots obliquely grows, tender twigs are slightly green or red, without ribs. Buds conical, apex curved, pale brown or dark red, with mucilage
61	Fraxinus L.	Fraxinus mandshurica Rupr	Oleaceae	Plant: taupe, dark brown. Leaf: dark green above, yellow green below
62	Pinus Linn	Prunus mume	Pinaceae	Gray green, dark gray when old, cracked. Branches cylindrical,