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The Hygrophila complex (Acanthaceae) in India and Ceylon
Author(s) -
Cramer Louis
Publication year - 1989
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1989.tb01000.x
Subject(s) - ceylon , acanthaceae , biology , genus , botany , ancient history , history
A reassessment of the genus Hygrophila in India and Ceylon is made with reference to Asteracantha, Cardanthera, Synnema, Hemiadelphis and Adenosma , recognized as allied genera by past Indian and Ceylon authors. An over‐emphasis on variable and overlapping characters by respective authors has led to the delimitation of these genera from one another and from Hygrophila. Examination of additional material from increasing floristic activity in Africa and Asia reveals that several characters are too variable to establish their generic status. It is concluded that they represent only two genera, viz. Hygrophila and Hemiadelphis. Additional clarifications are made to Heine's amendment of Hygrophila.