Question: Dipteryx and Cephalotaxus, are a species of what?

Context paragraphs:
Dipteryx odorata: Dipteryx odorata (commonly known as "cumaru" or "kumaru") is a species of flowering tree in the pea family, Fabaceae.  The tree is native to Central America and northern South America.  Its seeds are known as tonka beans (sometimes tonkin beans or tonquin beans).  They are black and wrinkled and have a smooth, brown interior.  They have a strong fragrance similar to sweet woodruff ("Galium odoratum") due to their high content of coumarin.

Cephalotaxus hainanensis: Cephalotaxus hainanensis is a species of conifer known by the common name Hainan plum-yew.  It is endemic to the island of Hainan in southern China.  It is possibly a synonym of "Cephalotaxus mannii".

Dipteryx: Dipteryx is a genus containing nine species of shrubs and trees.  It belongs to the "papilionoid" subfamily – Faboideae – of the legume family (Fabaceae).  This genus is native to South and Central America and the Caribbean.  Formerly, the related genus "Taralea" was included in "Dipteryx".

Cephalotaxus harringtonii: Cephalotaxus harringtonii, commonly known as Korean plum yew, Japanese plum-yew, Harrington's cephalotaxus, or cowtail pine, is a coniferous bush or small tree in the plum yew family.  It is native to Japan, but is occasionally utilised in western gardens and several cultivars exist for these purposes.  Japanese plum yew has been in cultivation in Europe since 1829, and many modern horticulturists are familiar with this Japanese species, named in honor of the Earl of Harrington, one of the first to grow

Streptomyces seranimatus: Streptomyces seranimatus is a bacterium species from the genus of "Streptomyces" which has been isolated from soil from the tree Cephalotaxus fortunei in Xishuangbanna in the Yunnan Province in China.

Cephalotaxus: Cephalotaxus, commonly called plum yew or cowtail pine, is a genus of conifers comprising 11 species, treated in either the Cephalotaxaceae, or in the Taxaceae when that family is considered in a broad sense.  The genus is endemic to eastern Asia, though fossil evidence shows it had a wider Northern Hemisphere distribution in the past.  The species are evergreen shrubs and small trees reaching 1.0–10 m (rarely to 20 m) tall.

Cephalotaxus mannii: Cephalotaxus mannii is a species of plum-yew.  It is a tree up to about 20 m tall, native to southern China, northeast India, Laos, northern Thailand, northern Myanmar and northern Vietnam.  While the species is widespread, its populations are fragmented and it is threatened by cutting for timber as well as for using its bark and leaves for medicinal extracts.

Dipteryx alata: Baru is a primitive species of the legume genus (Dipteryx alata) in the family Fabaceae, from the early branch Dipterygeae It is a large tree, usually referred to as "Baruzeiro" (Baru tree) in Portuguese, with its fruits and specially its seeds known as Baru - in Portuguese, "castanha de baru" or "amêndoa de baru", literally translated as "baru nut" and "baru almond", respectively.  Other less-used names besides Baru are Cumaru, Cumbaru, Barujo, Coco-feijão, Cumarurana, Emburena-brava, Feijão-coco, and Pau-cumaru.

Retusin (isoflavone): Retusin is an O-methylated isoflavone, a type of flavonoid.  It can be found in Fabaceae species like "Dipteryx odorata", in "Dalbergia retusa" and in "Millettia nitida".  It can also be found in "Maackia amurensis" cell cultures.

Cephalotaxus wilsoniana: Cephalotaxus wilsoniana is a species of coniferous tree in the plum yew family, Cephalotaxaceae.  Its common names include Taiwan plum yew, Taiwan cow's-tail pine, and Wilson plum yew.  It is endemic to Taiwan.

Supporting paragraphs: Dipteryx Cephalotaxus
Answer: trees