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Delimitation and Infra-Generic Classification of Barleria (Acanthaceae)

Mandy-Jane Balkwill and Kevin Balkwill
Kew Bulletin
Vol. 52, No. 3 (1997), pp. 535-573
Published by: Springer on behalf of Royal Botanic Gardens, Kew
DOI: 10.2307/4110286
Stable URL: http://www.jstor.org/stable/4110286
Page Count: 39
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Delimitation and Infra-Generic Classification of Barleria (Acanthaceae)
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Abstract

Barleria L. is a large, pantropical genus of herbs and shrubs, the satisfactory subdivision of which has long been problematic. This paper proposes a new classification of Barleria into 2 subgenera (Barleria and Prionitis) and seven sections (Barleria, Chrysothrix, Cavirostrata, Fissimura, Stellatohirta, Somalia and Prionitis). Of the seven sections, two (Prionitis and Somalia) are retained much as previously circumscribed, although new characters are used to delimit them; section Barleria is retained partially as previously circumscribed, but with two groups previously included in it removed and elevated to sectional status (as Fissimura and Stellatohirta) in subgenus Prionitis; the remaining two sections (Cavirostrata and Chrysothrix) are described anew. Approximately 240 of the 300 described species were studied in detail. The most important sources of taxonomically useful characters included the basic configuration of the corolla, structure of the stigma, composition of the androecium, form and structure of the capsules, presence or absence of beaks on the capsules, composition of the septum in the capsules and the number of seeds.

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