Sohail Jamil Qureshi
Department of Biological Sciences, Ouaid-1-Azam University, Islamabad, Pakistan
Abdul Ghani Awan
Department of Biological Sciences, Ouaid-1-Azam University, Islamabad, Pakistan
Mir Ajab Khan
Department of Biological Sciences, Ouaid-1-Azam University, Islamabad, Pakistan
Sofia Bano
Department of Biological Sciences, Ouaid-1-Azam University, Islamabad, Pakistan
ABSTRACT
The genus Launaea L. belongs to the tribe Lactuceae in family Asteraceae/Compositae whose taxonomic study has been carried out from Pakistan. The genus Launaea belongs to the tribe Lactuceae of Asteraceae. In this genus eight species were considered for morphological study i.e. Launaea intybacea, L. aspelinifolia, L. capitata, L. procumbens, L. microcephala, L. spinosa, L. massauensis and L. residifolia. Material for taxonomic studies was obtained from naturally occurring population and from herbarium of Quaid-i-Azam University (ISL). In Launaea asplinifolia the achenes are elliptical, + 5-ribs are present on each face and neck absent. In L. capitata the leaves are mostly basal while L. intybacea leaves ½ amplexicaul, auriculate, auricles rounded with long fine points. Launaea microcephala differs from Launaea procumbens in being annual, sparsely pubescent to villous herb and in possessing terminal heads on the dichotomously branched flowering stem, involucral bracts many-seriate, and the achenes are of one type.
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How to cite this article
Sohail Jamil Qureshi, Abdul Ghani Awan, Mir Ajab Khan and Sofia Bano, 2002. Taxonomic Study of the Genus Launaea L. from Pakistan. Journal of Biological Sciences, 2: 315-319.
DOI: 10.3923/jbs.2002.315.319
URL: https://scialert.net/abstract/?doi=jbs.2002.315.319
DOI: 10.3923/jbs.2002.315.319
URL: https://scialert.net/abstract/?doi=jbs.2002.315.319