. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. The Freshwater Algae of Africa. 535 Genus GONGROSIRA Kuetzino. 1. Gongrosira disciformis,n. sp. (Fig. 18.) Thallus epiphyticus, plantis aquaticis adhaerens, calce incrustatus, densus, forma disci circularis vel saepe valde irregularis, diametro raro plus quam 1 mm.; in sectione transversa plus minus deplanato-con-. Fvi L8 —Gongrosira disciformis, n. sp. A. Small part of the surface of the Myriophyllvm showing the form of the thalli of the epiphyte. /; Section through the surface of the substratum, sho
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. The Freshwater Algae of Africa. 535 Genus GONGROSIRA Kuetzino. 1. Gongrosira disciformis,n. sp. (Fig. 18.) Thallus epiphyticus, plantis aquaticis adhaerens, calce incrustatus, densus, forma disci circularis vel saepe valde irregularis, diametro raro plus quam 1 mm.; in sectione transversa plus minus deplanato-con-. Fvi L8 —Gongrosira disciformis, n. sp. A. Small part of the surface of the Myriophyllvm showing the form of the thalli of the epiphyte. /; Section through the surface of the substratum, showing a part of one of the convex cushions. C. Small part of the edge of a thallus seen from the surface 4 x 12; B and 0 x 375. vexus (altit. max. 50 /v.). Pars procumbens thalli e filis valde ramosis (ramis brevibus interdum imperfecte segregatis), parenchymatice aggregatis, constans. Pars adscendens e filis uumerosis brevibus erecte vel oblique dispositis, cum parte procumbente pulvinulum densum efficientibus. Cellulis, diam. ca. 9-12 //, 1-2-plo longioribus quam iatis, membrana modice incrassata, forma variabili, granulis amylaceis parvis confertis, pyrenoidibus ?. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum; South African Museum. Annale van die Suid-Afrikaanse Museum. Cape Town [etc. , South African Museum, etc. ]
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
