B. Papp szerk.: Studia Botanica Hungarica 32. 2001 (Budapest, 2001)
Langangen, A.; Leghari, S. M.: Some charophytes (Charales) from Pakistan
Ecology and distribution: In freshwater and scattered throughout both Pakistan (FARIDI 1955) (Fig. 13), and India (PAL et al 1962). In Kai spring the species has been found in water to 35 °C. Note: A closely related species, Charapseudobrachypus J. Groves et Stephens, has diplostichous cortex on the branchlets. This species is reported from India (PAL et al 1962). A study done by Dr K. Imahori (WOOD 1965) on this character concluded that C. pseudobrachypus normally had 2-3 corticated branchlet cortex. This means that C. pseudobrachypus can be regarded as synonymous with Chara setosa. INFORMATION ON SOME OF THE LAKES WHERE CHAROPHYTES HAVE BEEN FOUND Karoghangro lake This is the largest brackish water lake in Pakistan. The area covers 70 km 2 , with a depth to 1-2 m. The lake has freshwater inflow from large draining areas, with high nutrition content which supports a rich plant growth along the margins of the lake (Table 1). Typha domingensis Pers. and Phragmites australis (Cav.) Trin. ex Steudel are dominating helophytes, while common submerged plants are Hydrilla verticillata Royle, Najas minor All., N. marina L. , Potamogetonpectinatus L. and Ipomoea aquatica Forsk. Chara zeylanica, C. flaccida and Nitella hyalina are found along the freshwater part, while Lamprothamnium succinctum is found in the more saline part of the lake. Pateji lake This is a large, shallow, 1.5 m deep, slightly brackish lake. The water is a mixture of freshwater from agriculture land and saline water from the Arabian Sea (Table 1). Commonly found are algae such as Enteromorpha salina Kützing, E. proliféra (Müller) Agardh, Rhizoclonium hieroglyphicum (Agardh) Kützing and Lamprothamnium succinctum. The last is found on mud bottom in areas with the highest salinity. Bakar lake (Chotiari reservoir) This is a large eutrophic freshwater lake (Table 1) with large reeds of Phragmites australis, Typha domingensis and T. elephantina Roxb. Submerged plants
