Castanospermum

"Blackbean" redirects here. For other uses, see Black bean.

Not to be confused with Castanospora.

Castanospermum
File:Castanospermum australe flowers and foliage.jpg
C. australe
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Tribe:	Angylocalyceae
Genus:	Castanospermum A.Cunn ex Hook.
Species:	C. australe
Binomial name
Castanospermum australe A.Cunn & C.Fraser ex Hook.

Black beans, mature seeds, raw

Nutritional value per 100 g (3.5 oz)
Energy	1,425 kJ (341 kcal)
Carbohydrates	62.36 g
Sugars	2.12 g
Dietary fiber	15.2 g
Fat	1.42 g
Protein	21.60 g
Vitamins
Vitamin C	(0%) 0.0 mg
Minerals
Calcium	(12%) 123 mg
Magnesium	(48%) 171 mg
Phosphorus	(50%) 352 mg
Potassium	(32%) 1483 mg
Sodium	(0%) 5 mg
Units μg = micrograms • mg = milligrams IU = International units
Percentages are roughly approximated using US recommendations for adults. Source: USDA Nutrient Database

Castanospermum australe (Moreton Bay Chestnut or Blackbean), the only species in the genus Castanospermum, is a flowering plant in the family Fabaceae, native to the east coast of Australia in Queensland and New South Wales, and to the Pacific islands of Vanuatu and New Caledonia.

Growth

It is a large evergreen tree growing to 40 metres (130 ft) tall, though commonly much smaller. The leaves are 15 centimetres (5.9 in) long and 6–7 centimetres (2.4–2.8 in) broad, pinnate, with 11-15 leaflets. The flowers are bicoloured red and yellow, 3–4 centimetres (1.2–1.6 in) long, produced in racemes 6 centimetres (2.4 in) long. The fruit is a cylindrical pod 12–20 centimetres (4.7–7.9 in) long and 4–6 centimetres (1.6–2.4 in) diameter, the interior divided by a spongy substance into one to five cells, each of which contains a large chestnut-like seed.

Uses

The seeds are poisonous, but become edible when carefully prepared by roasting, cutting up into small pieces, leaching with running water for several days, and pounding into flour. The timber, which somewhat resembles walnut, is soft, fine-grained, and takes a good polish, but is not durable.

• Castanospermum australe flower 1.jpg

  Castanospermum australe flower

• 200410 Castanospermum australe.JPG

  Small C. australe tree

• Castanospermum australe02.jpg

  Mature pod and seeds

References

• Australian National Botanic Gardens: Castanospermum australe
• Bush Tucker Plants: Moreton Bay Chestnut
• Plants for a Future: Castanospermum australe
•  This article incorporates text from a publication now in the public domain: