B. Papp szerk.: Studia Botanica Hungarica 32. 2001 (Budapest, 2001)

Langangen, A.; Leghari, S. M.: Some charophytes (Charales) from Pakistan

take these reports into account. On the other hand, AlSHA and SHAMEEL ( 1995) reported on the occurrence, in Gajar village, Baluchistan, of two forms (sensu WOOD 1965) of Chara vulgaris: C. vulgaris f. atrovirens (Lowe) H. et J. Groves and C. vulgaris f. calveraensis R. D. Wood, but their descriptions fail to mention or even contradict the diagnostic characters of these taxa (dark green unincrusted plants with swollen bract-cells for f. atrovirens, plant with irregular stipulodes, elongate to 1600 urn long for f. calveraensis); therefore it is clear that the Pakistani specimens cannot belong to the cited forms, but the poor quality of the illustrations does not allow a precise identification; here also it is not possible to take these reports into account. The investigated areas The areas investigated are from Sindh province in South Pakistan where most of the collections were made, around Quetta in Baluchistan, Lahore in Punjab and an area around Peshawar in Northwest Frontier province in North Pakistan. We have also added one specimen deposited in the Botanical Museum, Bergen, Norway (BG). We believe that many specimens of Pakistani charophytes can be found in different herbaria around the world, but we have not yet examined this. Figure 1 shows the land forms and occurrence of water in Pakistan. The best conditions for charophytes are found in the eastern parts of the country, the foothill area and agriculture land as marked on the figure. The same areas are in intensive agriculture use and artificially irrigated and thus subject to human influences with consequences for the occurrence and distribution of charophytes in Pakistan. The field work was done by S. M. Leghari in the years 1996-1999. Species have been determined by A. Langangen. Liquid material of the studied species is deposited in the Botanical Museum, University of Oslo, Oslo, Norway (O). Duplicates of all species (except Chara gymnophylla) and specimens from most of the localities are deposited in the Hungarian Natural History Museum, Budapest, Hungary (BP). OBSERVATIONS Our knowledge of the charophyte flora of Pakistan is still incomplete and based on sources given above. The species found in this investigation are: