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Senegalia megaladena
Senegalia megaladena is a spiny climber, shrub or tree, native to Jawa, and from mainland Southeast Asia to China and India. It is eaten as a vegetable and used as a fish poison. It is named after its distinctive large gland on the petioles.
The species grows as a robust climber (stems can measure up to 50mm d.b.h.) or as a straggly shrub or tree (from 4 to 10m tall), and is perennial. The leaves are bipinnate. Distinguishing features for the species are: rather prominently raised petiole gland whose position is variable, commonly near middle of petiole, 1-5-5mm in length, with a length to width ration of 0.7 to 2.5, and orange to orange-brown in colour when fresh.
The autonym megaladena variety is distinguished by having 4 to 8mm long leaflets, usually 0.8 to 1.5mm in width, with visible lateral veins (though sometimes obscure, sometimes quite evident). It flowers in Yunnan from July to September, fruits from December (rarely) to February.
The indochinensis variety has smaller leaflets, ranging from 2mm, usually 3 to 4mm, and up to 5mm long, some 0.4 to 0.6mm wide, with the lateral veins usually not visible or sometimes extremely faint. Flowering occurs in Hainan from July to September, while mature fruit have been collected in April.
The species is found in Jawa and from Mainland Southeast Asia to Zhōngguó/China and India. Countries and regions where the plant grows as a native include: Indonesia (Jawa); Malaysia (Peninsular Malaysia); Thailand; Cambodia; Vietnam; Zhōngguó/China (Hainan, Yunnan); Laos; Myanmar; India (including Andaman Islands, Assam); Bangladesh; East Himalaya; and Nepal.
The variety indochinensis grows as a native in an area from Peninsular Malaysia to Vietnam and Hainan in Zhōngguó/China. Countries and regions that it occurs in as a native are: Malaysia (Peninsular Malaysia); Thailand; Cambodia; Laos; Vietnam; and Zhōngguó/China (Hainan). It has been introduced to Jawa in Indonesia.
Growing as a climber or as a spiny shrub in Southeast Asia, The indochinensis variety occurs in secondary forests, in clearings or alongside roads. It grows in open forests in Zhōngguó/China at between 100 and 400m altitude.
In Zhōngguó/China the megaladena variety grows in forests that range from open to dense, or in thickets. It is associated with sandstone mountains, and is recorded from 230 to 1400m in altitude. Maslin et al. comment that "[i]n Jinping County where we observed living plants they were quite common in the general area but occurred singularly or in groups of a few individuals."
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Senegalia megaladena
Senegalia megaladena is a spiny climber, shrub or tree, native to Jawa, and from mainland Southeast Asia to China and India. It is eaten as a vegetable and used as a fish poison. It is named after its distinctive large gland on the petioles.
The species grows as a robust climber (stems can measure up to 50mm d.b.h.) or as a straggly shrub or tree (from 4 to 10m tall), and is perennial. The leaves are bipinnate. Distinguishing features for the species are: rather prominently raised petiole gland whose position is variable, commonly near middle of petiole, 1-5-5mm in length, with a length to width ration of 0.7 to 2.5, and orange to orange-brown in colour when fresh.
The autonym megaladena variety is distinguished by having 4 to 8mm long leaflets, usually 0.8 to 1.5mm in width, with visible lateral veins (though sometimes obscure, sometimes quite evident). It flowers in Yunnan from July to September, fruits from December (rarely) to February.
The indochinensis variety has smaller leaflets, ranging from 2mm, usually 3 to 4mm, and up to 5mm long, some 0.4 to 0.6mm wide, with the lateral veins usually not visible or sometimes extremely faint. Flowering occurs in Hainan from July to September, while mature fruit have been collected in April.
The species is found in Jawa and from Mainland Southeast Asia to Zhōngguó/China and India. Countries and regions where the plant grows as a native include: Indonesia (Jawa); Malaysia (Peninsular Malaysia); Thailand; Cambodia; Vietnam; Zhōngguó/China (Hainan, Yunnan); Laos; Myanmar; India (including Andaman Islands, Assam); Bangladesh; East Himalaya; and Nepal.
The variety indochinensis grows as a native in an area from Peninsular Malaysia to Vietnam and Hainan in Zhōngguó/China. Countries and regions that it occurs in as a native are: Malaysia (Peninsular Malaysia); Thailand; Cambodia; Laos; Vietnam; and Zhōngguó/China (Hainan). It has been introduced to Jawa in Indonesia.
Growing as a climber or as a spiny shrub in Southeast Asia, The indochinensis variety occurs in secondary forests, in clearings or alongside roads. It grows in open forests in Zhōngguó/China at between 100 and 400m altitude.
In Zhōngguó/China the megaladena variety grows in forests that range from open to dense, or in thickets. It is associated with sandstone mountains, and is recorded from 230 to 1400m in altitude. Maslin et al. comment that "[i]n Jinping County where we observed living plants they were quite common in the general area but occurred singularly or in groups of a few individuals."