Pittosporum illicioides Makino

Pittosporum illicioides var. angustifolium (described from Taiwan) represents the extreme of a continuous range of variation, with leaf blades linear, 5–15 × 0.6–2 cm.

Fats and oils can be extracted from the seeds for making soaps, and fibers from the stems can be made into paper.

Shrubs ca. 5 m tall. Young branchlets glabrous; old branchlets lenticellate. Leaves 3–6-clustered at branchlet apex, appearing pseudoverticillate; petiole 7–15 mm; leaf blade pale green abaxially, dark green adaxially, shiny after drying, obovate-lanceolate, oblanceolate, or narrowly lanceolate, 5–18 × 1.7–4.5 cm, thinly leathery, glabrous, lateral veins 6–8-paired, slightly convex abaxially, inconspicuous adaxially, reticulate veins indistinct abaxially, base narrowly cuneate, usually decurrent, margin flat or slightly rugose, apex obtuse or acuminate. Inflorescences terminal, umbellate, 2–10-flowered; bracts small, deciduous; pedicels usually curved, slender, 1.5–3.5 cm, glabrous. Sepals ovate, ca. 2 mm, glabrous, apex obtuse. Petals 8–9 mm. Stamens ca. 6 mm. Ovary long ovoid, puberulous; stipe short; placentas 3, parietal; ovules 5–8 per placenta. Capsule subglobose, ± triangular or with 3 longitudinal folds, 9–12 mm in diam., dehiscing by 3 valves; placentas in middle part of valves; pericarp thinly woody; pedicel usually curved, slender, 2–4 cm; stipe ca. 1.5 mm. Seeds 8–17, ca. 3 mm; funicle compressed, ca. 1.5 mm. Fl. Mar–May, fr. Jun–Nov.

Anhui, Fujian, N Guangdong, Guangxi, Guizhou, Hubei, Hunan, S Jiangsu (Yixing Xian), Jiangxi, Sichuan, Taiwan, Zhejiang [Japan].

Forests, thickets, valleys, stream sides; 100--2200 m.

Pittosporum illicioides var. angustifolium Huang ex S. Y. Lu; P. illicioides var. oligocarpum (Hayata) Kitamura; P. illicioides var. stenophyllum P. L. Chiu ex H. T. Chang & S. Z. Yan; P. kobuskianum Gowda; P. oligocarpum Hayata; P. oligospermum Hayata; P. sahnianum Gowda.

Pittosporum illicioides là một loài thực vật có hoa trong họ Pittosporaceae. Loài này được Makino miêu tả khoa học đầu tiên năm 1900.

海金子（学名：Pittosporum illicioides），为海桐花科海桐花属下的一个植物种。

コヤスノキ（子安木、Pittosporum illicioides）はトベラ科トベラ属の常緑低木。中国大陸、台湾に分布するほか、日本では兵庫・岡山県境付近の南部にのみ自生し、社寺林に多い。相生市磐座神社と上郡町大避神社のコヤスノキ叢林は兵庫県の天然記念物に指定されている。維管束植物レッドデータブックで準絶滅危惧種。

葉は長卵形で先が尖り、近縁種トベラより薄い。雌雄異株。初夏に長い花梗の先に淡黄色の花をつける。果実はさく果で、晩秋に黒く熟し垂れ下がり、裂けて赤い粘着性の種子が現れよく目立つ。子安木という名の由来は不明であるが、社寺林に多いことから安産信仰と関係がある可能性がある。一般にはこの地域だけに自然に遺存したとされているが、人為的に植栽されたものが広がったのではないかとの考えもある。