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The Inedible Durians

May 12, 2013 5 Comments

Of the 27 species of durian, only a handful are generally considered good enough to eat. The main qualifier for the “edible” category seems to be a relatively high flesh-to-seed ratio. The rest aren’t poisonous, but their palatability is in the tongue of the beholder.

Most, but not all, have only a very thin layer of flesh. Others have no flesh at all, only shiny bare seeds. Some have strong odors, others none. Strangely, some of the fruits have never been seen or tasted, the tree identified by its leaves or, more often, flowers. A few of these unknown species are so rare that I have to wonder if they’re really a new species at all, and not the imagination of an overexcited durian hunter.

Over the years there has been a lot of confusion and miscommunication about durian species. It’s a tangled mess with no end to really try and present a complete list of the durian species.  Even today, there are still new durians being discovered, or renamed, or lumped together as synonymous.

Botanists are still arguing over whether or not some species exist, like Durio purpureus, which no one besides its discoverer has ever seen. Scientists have still not reached a consensus on whether or not several others even exist, namely: durio sumatranus, durio bukitreyensis, durio perakianus, durio macrantha, durio burmanicus, and durio wrayi.

I’ve decided to base this list of durian species on  AJGH Kosterman’s 1958 monograph, The Genus Durio Adans., because it’s both the most recent and  thought to be the most reliable. This list will change as researchers continue to explore and document the durian species. I’ll try to update this page accordingly.

1. Durio affinis


Description: Fruit is orange-yellow exterior. A thin, white flesh covers the seeds. It’s said not to be edible. Grows on the branches and fruits drop unopened. Tree 30 meters tall.

Distribution: Trengganu, Johor, Sabah, and Sarawak.

Scientific Name: Originally lumped with Durio mallacensis, it was renamed Durio affinis by  Kosterman and Soegeng Reksodihardjo who suspected it was really a separate species.  “Affinis” is a taxonomic term used
when the identity of a distinct biological
species is
unknown but has a striking similarity or close relation with
a known species. Named by Odoardo Beccari.
Local name: duan tajam

2. Durio acutifolius

Description: A small, triangular fruit with a bright red exterior. It has three seed-bearing sections with black seeds encased in a thin layer of dark, glossy red flesh. Flesh is flavorless. Tree grows up to 29 meters tall.

Distribution: Borneo, but especially on the eastern side.

Scientific Name: Latin for “pointed leaf.” Published by Maxwell T. Masters in 1875.

Local Names: Tupaloh (Dusun Dyak); durian burung
(Kedayan); Durian anggang; Tuwola
pupulu, durian lojang, Lai Kuju

3. Durio beccarianus

Description: A spherical fruit with slender spines very similar to and possibly synonymous with Durio affinis. . It is a small tree growing to only 20 meters tall.
Distribution: One tree was discovered in Indonesian West Borneo, Upper Kapuas River
Scientific Name: Named in honor of the great Italian botanist, Odoardo Beccari, who recorded eight durian species. The name was given by AJGH Kosterman in 1958.
Local Names: None known

4. Durio carinatus

Description:  The durian is oblong and yellow with pyramidal spines. The thin dark red aril is not considered edible. Tree up to 45 meters tall.
Distribution: Sumatra, Pahang, Johor, Sabah, Sarawak and Brunei
Scientific Name: Name means “keeled”  in Latin. Named by Maxwell T. Masters in 1889.


Local Names: Durian paya/paja (marsh durian), durian burung, durian hantu.


5. Durio crassipes

Description: No one knows what this fruit looks like, although one source quotes a picture with a red aril.  The tree is similar to Durio lanceolatus. It grows up to 60 meters tall.

Distribution: The single known tree of this species was found outside Sipitang, Sabah.


Scientific Name: “Crassipes” means fat in Latin, referring to the stoutness of the fruit stalk. It was named by Kosterman and Soegeng Reksodihardjo in 1958.

Local Names: None

6. Durio excelsus


Description: Pink or orange fruit with bright dark red but tasteless flesh. It is occasionally considered synonymous with the edible Durio grandiflorus.
Distribution: Borneo
Scientific Name: “Excelsus” is the latin word for “high” or “elevated,” and refers to the veins of the leaves. It was first collected in 1836 by Pieter Willem Korthals, who called it Boschia excelsus. In 1924  Bakhuizen Van Den Brink reclassified it as a member of the genus Durio.

Local Name: Apun; Durian daun; Begurah (Dyak), Kampung suluh (Dyak)

7. Durio griffithi


Description: Similar to Durio acutifolius but the flesh is orange to orange-red and covers only the top part of the seed. Opens on the branch. Tree grows up to 60 meters tall.

Distribution: Peninsular Malaysia, Sumatra, Borneo

Scientific Name: Named in 1874 by Maxwell T. Masters in honor of botanist William Griffith, who is credited with naming the edible Durio oxleyanus.

Local Names: Simartarutung (Sumatra: Batak); Enderian (Malay = resembling durian) Lai kuyu (Borneo), Beberas (E. Sumatera) durian tupai, durian kuning, pepisang

8. Durio purpureus


Description: No one has ever seen the durian part of this durian tree. Kosterman found one tree and decided that it was different enough from Durio grandiflorus to warrant a new species. Another specimen has never been found. The tree Kosterman found was 32 meters tall.

Distribution: Sabah

Scientific Name: “Purpureus” means “purple” in Latin. I guess it’s possible the fruit could be purple, but since Kosterman didn’t see the fruit I think it’s unlikely. “Purpureus” also means “brilliant or shining,” which I conclude may be how Kosterman felt when he discovered this tree.

Local Names: None

9. Durio lanceolatus


Description: The exterior is dirty yellow and pointy at both ends. Inside, the flesh is red-yellow and almost tasteless. (key word: almost tasteless. Hmmm). Tree grows up to 55 meters tall.
Distribution: Sumatra and Borneo
Scientific Name:  The name is Latin for “lance-shaped”,  referring to the long pointy leaves. It was named by Maxwell T. Masters in 1875.
Local Name: Bian, Dian perai, Durian, Durian anggang, Durian bengan, Durian burong,
Durian pelanduk, Kelintjing, Lai, Lai bengan, Rian burung, Taula tongau.

10. Durio lissocarpus


Description: This durian is sometimes considered synonymous with Durio carinatus. There’s no other description of it.
Distribution: Marshy places in Borneo, especially in Western Kalimantan.
Scientific Name: Named by Odoardo Beccari in 1875

Local Names: Durian burung





Durio of Malaysia by Salma Idris

11. Durio oblongus


Description: An oblong, dark yellow to orange durian with dense conical spines. The flesh is red, soft and thick with a slight sweet taste. The tree has white flowers and grows up to 23 meters tall.

Distribution: Borneo. Common near Kuching and Sandakan.

Scientific Name: Latin for “oblong,” which could refer either to the leaf shape or the oblong shape of the durian. It was named by Maxwell T. Masters in 1875.

Local Name: nyekak (Iban)


12. Durio macrophyllus


Description:  This durian looks very similar to Durio mallacensis and was at one point even considered a variety of D. testudinarum. Tree grows to 30 meters tall.

Distribution: Malay Peninsula
Tree Height: 30 meters tall
Fruit (immature): pear shaped or globose, blue-green color, dense
Notes: Originally considered a variety of D. testudinarum
FOUND: Kelantan, Sg. Chalil in July, Pahang, Bukit Kajang Forest Reserve, Nov. , Kuala Kangsar, Oct. 

Distribution:Malay Peninsula and possibly southern Myanmar.
Scientific Name: Ridley Big Leaf 1922

Local Names: tong, daun, batan, daun besar, pumkubm (Batak)

13. Durio macrolepsis

Description: The fruit of this durian is unknown. It is thought to possibly be extinct as it has not been recollected in a long time. We may never find out if the fruit tastes any good.
Distribution: Malay Peninsula, specifically Maxwell’s Hill in Perak and Fraser’s Hill, Selangor..
Scientific Name: Named by Kosterman in 1958 for the large scales on the leaves, called lepidotes.

Local Names: none

14. Durio malaccensis

 
Description: In describing this variety, Kosterman may just be wrong. That, or he is describing a Durio malaccensis cousin, Durio johoricus. Either way, Kosterman states that this durian has a red shell and thin white flesh. Most other sources, including this one with photographs, say this durian is pear-shaped and covered in a dense network of blue-green thorns. It has at times been considered a variety of D. testudinarum because it fruits from the trunk of the tree. The thin white flesh has a leathery texture and is considered inedible. Tree Height: 15-20 meters
Distribution: Peninsular Malaysia and Sumatra
Scientific Name: Named by Maxwell T. Masters in 1875 after the Malaysian state, Malacca, where it was first found.

Local Names: batang, tong Durian batang, durian bangko, durian bankolo

15. Durio pinangianus 

Description: A round fruit with a dull red-purple hull. The flesh inside is a thin, leathery pink or white splattered with red. It is sometimes considered synonymous with the unknown fruit Durio macrolepsis because of the position of the flower. It fruits at the base of the tree.

Distribution: Perak and Penang, particularly West Hill.

Scientific Name: Named for the island of Penang, where it was found, by Henry Ridley in 1922

Local Name: daun tajam, burung

17. Durio singaporensis


Description:  A round fruit with a greenish yellow exterior. Kosterman states that the seeds are bare of flesh, but other sources note a white
leathery layer of flesh that dries and adhere to the seed. The tree grows to 30 meters tall. 
Distribution: Malay Peninsula
Scientific Name:Named after the island of Singapore, where it was found, by Henry Ridley in 1916.

Local Names: durian daun, bujur

For now, that’s all the inedible durians. They’re fascinating, if not particularly tasty on their own. In years to come, they may play an increasingly important role in the commercial durian industry.  Many orchards now use inedible durian species as rootstock to protect the deliciously vulnerable durio zibethinus from disease. A noble role indeed.

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Comments

  1. Jiewenwang says

    June 23, 2021 at 10:52 pm

    Durio affinis is tasted by all the fruit je says it over cooked noodles

    Reply
  2. Sdravko says

    January 27, 2019 at 4:16 am

    Hi Lindsay, i asked here about sime durian id some time ago but i cant see my comment. Did you get it? Sdravko

    Reply
  3. Sdravko says

    January 5, 2019 at 8:28 am

    Hi Lindsay,
    I love your page. Its better for durian id than google and wiki together. Now i have a problem with some durian i found north of puruk jahu, borneo. Could be carinatus or excelsus, not sure. The dayak, who eat a lot of bland fruit consider it inedible but i found a guy in the logging company who prefers it to normal durian. I uploaded a video on youtube “foraging for the elusive monkey durian with Dayak Siang…”. Do you know what species it is?
    Thanks, Sdravko

    Reply
  4. Rob says

    August 7, 2013 at 2:32 pm

    I think we saw the Griffithi in Lambir National Park. I only doubt it because you'd think their staff would know about it.

    Reply
    • Lindsay Gasik says

      August 7, 2013 at 3:06 pm

      It did look exactly like griffithi but it didn't have any thorns on it. We'll have to look at the picture again. It wouldn't surprise me if the staff were just clueless! Seems to happen a lot with rare durio species.

      Reply

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