Morphological characteristics of Pittosporum rubrum
Evergreen shrubs or small trees, up to 6 meters high, with brown hairy branches and lenticels. Leaves clustered at the top of branches, biennial, leathery, hairy on both sides when tender, and then bald.
Obovoid or obovate-lanceolate, 4-9 cm long and 1.5-4 cm wide, dark green at the top, shiny and dull after drying, round or dull at the top, often slightly concave or slightly heart-shaped, with narrow wedge-shaped base, 6-8 pairs of lateral veins, which are combined near the edge. Sometimes there are many veins due to obvious branches between lateral veins, and the reticulate veins are slightly obvious.
The leaves are leathery, obovate, round at the top, clustered at the top of branches, and are pseudo-whorled. After long-term culture, stamens are often degenerated and sterile, and the seed setting rate is also low. Smooth and dense leaves, strong germination, pruning resistance and easy modeling are widely used in shrub balls, hedgerows and modeling trees.
Umbellies or corymbose umbels are terminal or sub-terminal, densely yellow-brown pilose, and pedicels are 1-2 cm long. Bracts lanceolate, 4-5 mm long, bracteoles 2-3 mm long, all covered with brown hairs. Flowers are white and fragrant, and then turn yellow; Sepals ovate, 3-4 mm long, pilose, petals oblanceolate, 1- 1.2 cm long, free, stamens type 2, staminodes filaments 2-3 mm long, and anthers nearly sterile.
The filaments of normal stamens are 5 to 6 mm long, the anthers are oblong, 2 mm long and yellow, the ovary is oval and densely pilose, there are 3 placentas on the lateral membrane, and there are many ovules, and there are 2 rows in the middle of the placentas. The flowering period is from March to May, and the fruit ripens in 9-65438+1October.