these two types of fruit are close relatives, under the same passifloraceae family and passiflora genus. their drama-looking flowers are fascinating. happen that since november i encounter the two plants at few different places flowering and fruiting around the city. felt the urge to understand more about these plants.
they are definitely foreign species to hong kong. i never heard about passion fruit when i was a kid. indeed, both plants are native to mainly south america. to understand first about this botanic family, quoting from universallium
Passifloraceae – Many members of the family climb by means of tendrils borne in the leaf axil, though others are erect trees or shrubs. The leaves are often spirally arranged along the stem and are stipulate. Other characteristics include the presence of radially symmetrical male, female, or bisexual flowers with three to five sepals, petals, and stamens. The flowers usually have a one-chambered ovary composed of three to five carpels (ovule-bearing segments), with numerous ovules attached to the inner ovary walls. The stamens are below the ovary, and both are usually borne on the end of a stalk called an androgynophore. Sometimes only the ovary is carried on the stalk. Nearly all species have seeds that bear a fleshy appendage called an aril. In the passion-flower family there often are one or more whorls of tendril-like structures, called the corona, in the flower. The fruits are capsules or berries.
轉頭說說植物的命名。是否因為花朵的外貌濃艷，充滿激情，故云熱情果？其實果的名字來自其植物西班牙／拉丁文 passioflos，英文直譯為 passion flower，本意有受難花的意思，取材花蕊仿近十字架，而紫或紅的花斑可聯想至基督的淌血。 不過以英文的詞解熱情也是理所當然的。此外，西番蓮花在台灣、日本也有時鐘花的稱號，又是另一貼切的命名。從植物名字閱讀不同文化的異與同，又是賞自然額外的知識增長。
now that we know the common features of the two. let’s spot the differences.
stinky passion fruit is clearly more hairy and come in smaller size. its fruit is edible and so is passion fruit. but obviously the latter is more widely commercially cultivated across tropical and subtropical areas worldwide. in fact many independent farms i visited in this city are commonly planting passion fruit. stinky fruit’s stems, petioles, and leaves are covered with tiny trichomes and its bracts are feathery. its leaves emit an unpleasant odour when crushed, thus the name. meanwhile passion fruit is much more smooth and waxy looking, obviously in the fruit as well as in the leaves. passion fruit leaves are alternate and deeply 3-lobed when mature.
百香果 / 熱情果 passion fruit (passiflora edulis) – kingdom: plantae 植物界 | (unranked): angiosperms | (unranked): eudicots | (unranked): rosids | order: malpighiales 金虎尾目 | family: passifloraceae 西番蓮科 | genus: passiflora 西番蓮屬 | species: p.edulis 百香果 / 熱情果
龍珠果 / 毛西番蓮 stinky passion fruit (passiflora foetida) – kingdom: plantae 植物界 | (unranked): angiosperms | (unranked): eudicots | (unranked): rosids | order: malpighiales 金虎尾目 | family: passifloraceae 西番蓮科 | genus: passiflora 西番蓮屬 | species: p. foetida 龍珠果 / 毛西番蓮