Leguminosae of the United States: I. Subfamily Mimosoideae

Brenan, J. P. M.; Isely, Duane

doi:10.2307/4108148

Cited by 8 publications

(19 citation statements)

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“…A character easily observed and expressed is the presence of a small gland on top of the anther. Such a gland was, until recently, considered diagnostic of the tribe Adenantherae, but both Brenan (1959) and Ross (1979) noted that it is present in all African species of both Acacia subgenus Acacia and subgenus Aculezferum. I t is absent from A. farnesiana, which is probably American in origin.…”

Section: Morphologymentioning

confidence: 99%

Derivation and dispersal of Acacia (Leguminosae), with particular reference to Australia, and the recognition of Senegalia and Racosperma

Pedley

1986

Botanical Journal of the Linnean Society

122

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The morphology of seedlings, leaves, flowers and inflorescences, anatomy of the pod, the occurrence of extra‐floral nectaries, free amino acids of the seeds, flavonoid compounds in heartwoods, cyanogenic compounds and porate, colporate and extraporate pollen, and susceptibility to rusts, all indicate that three genera, Acacia Miller, Senegalia Raf. and Racosperma Martius, should be recognized. These correspond to currently accepted subgenera of Acacia. The size of these more narrowly circumscribed genera is in keeping with the size of genera of other tribes of low diversity in Leguminosae. Acacia and Senegalia arose independently from the Ingeae, with Racosperma being derived from Senegalia. Section Filicinae is more advanced than section Senegalia of Senegalia, and sections Racosperma and Pukhella, both with at least some species with bipinnate foliage, are the most advanced of Racosperma, while the other sections Pleurinervia and Lycopodiifolia have only phyllodinous species. Long‐range dispersal of Racosperma from the Australian region has occurred, but the broad pattern of distribution is interpreted in terms of plate tectonics. Racosperma was present in Australia in the late Cretaceous but did not become widespread until the general drying of the continent in the Miocene. The flora of SW Australia has been isolated from the rest of the continent by climatic barriers since the late Tertiary and has a high proportion of endemic species. Barriers to plant migration in the east have operated only intermittently and there is no area comparable in endemism to the southwest.

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Section: Morphologymentioning

confidence: 99%

Derivation and dispersal of Acacia (Leguminosae), with particular reference to Australia, and the recognition of Senegalia and Racosperma

Pedley

1986

Botanical Journal of the Linnean Society

122

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“…-Altitude, habitat and gall colours of E. African Acacia species (based onBrenan, 1959) A. zanzibnrica .…”

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confidence: 99%

“…Since Hernandez, these swellings have been discussed by many authors, but usually in relation to the ants which they commonly house (Brown, 1960b;Bryk, 1916;Janzen, 19673;Kannenberg, 1900;Karawaiew, 1892;Keller, 1892;Spruce, 1908;Wheeler, 1942). Relatively few writers have dealt with the swellings as such (Brenan, 1959;Monod & Schmitt, 1968;Penzig, 1921 ;Schweinfurth, 1867), despite the fact that this phenomenon appears to be essentially independent of the housing of ants. Workers who believed the swellings to be galls were usually able to find insect larvae preceding the ants in the swellings and presumed that they caused them (e.g.…”

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confidence: 99%

Insect associations with the swollen thorn acacias

Hocking

1970

Transactions of the Royal Entomological Society of London

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“…zanzibarica is a small tree reaching 9 m in height. The species is often found on temporarily inundated soils, where it can form almost pure stands and according to Brenan (1959) it may be an indicator of saline soils. It is used in medicine, for cultural purposes and sometimes for firewood, stools, poles, fencing and forage (Alakoski-Johansson unpubl.).…”

Section: Introductionmentioning

confidence: 99%

Regeneration of cleared Acacia zanzibarica bushland in Kenya

Johansson

Kaarakka

1992

Journal of Vegetation Science

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Abstract. Woody biomass production in natural forests of arid and semi‐arid regions is low. The fuelwood demand of settlements often exceeds the sustained yield and regeneration capacity of natural forests, which results in deforestation. Regeneration and woody biomass development was studied in cleared Acacia zanzibarica bushland in Bura, eastern Kenya. The area was cleared in 1982 and studied in 1988. The site had been colonized primarily by Acacia zanzibarica and A. reficiens. Mean density was 1333 trees/ha, mean total woody biomass (dry weight) 1954 kg/ha, equal to 2.53 m3/ha. Mean annual increment was 293 kg/ha, or 0.3 8m3/ha. Expressed as rain use efficiency, the natural dry matter productivity of the woody component equals 0.83 kg ha‐1 yr‐1 mm‐1. The regeneration potential and some management implications are discussed.

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Leguminosae of the United States: I. Subfamily Mimosoideae

Cited by 8 publications

References 0 publications

Derivation and dispersal of Acacia (Leguminosae), with particular reference to Australia, and the recognition of Senegalia and Racosperma

Derivation and dispersal of Acacia (Leguminosae), with particular reference to Australia, and the recognition of Senegalia and Racosperma

Insect associations with the swollen thorn acacias

Regeneration of cleared Acacia zanzibarica bushland in Kenya

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