By Liya Nikolaevna Khakhina, Robert Coalson, Dr. Lynn Margulis, Professor Mark McMenamin
"Symbiogenesis", a time period first coined by means of the Russian botanist K.S. Merezhkovsky within the past due nineteenth century, is the evolution of recent existence kinds, from the actual union of other, once-independent companions. during this ebook Liya Khakhina lines the advance of the concept that in Russian and Soviety clinical literature, reviewing the contributions of Merezhkovsky, A.S. Famintsyn, B.M. Kozo-Polyansky and different famous Russian scientists, to theories of symbiosis in evolution. This ebook offers additional details to English-speaking scientists at the heritage of the early improvement of symbiosis concept. The editors have written an advent to Khakhina's publication (published within the Soviet Union in 1979) and feature additionally integrated an appendix via Donna Mehos in regards to the American anatomist Ivan E. Wallin, whose concept of symbionticism - species starting place through the purchase of microbial symbionts - resembled the theories of the Russians.
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Extra resources for Concepts of Symbiogenesis: A Historical and Critical Study of the Research of Russian Botanists (Bio-Origins Series)
Collected by R. E. Fuller. P. Notes The relationship between L. julii subspec. fulleri and L. salicola L. Bol. is very interesting. In 1960 de Boer published a 36 LITHOPS JULII ssp. E. ) Fearn. Note the variation in the window in these plants. new variety which he called L. salicola var. reticulata which was found by Dr A. L. Geyer in June 1959. It was discovered 45 km to the south of Hopetown in the neighbourhood of Kraankuil, Cape Province. In the thesis by Fearn (1968) p. 286 it was suggested that this plant was rather similar to L.
Nel on 30th April, 1937. 48 LITHOPS OTZENIANA Nel. The teeth-like markings of this species make it instantly recognisable. It is very popular with collectors. E. Br. This is possibly the most frequently encountered species in cultivation. 49 Type locality Bushmanland, at Brakfontein 50 km from Loeriesfontein. It was found in weathered granite under bushes and in open spaces between stones. Varieties Lithops otzeniana var. weberi (Nel) Fearn. E. Br. Mesemb. und Portulac. 1908: 289. This is an extremely variable species with a large number of geographical forms.
Notes Mesembr. 1936 3: 33. Size Up to 30mm long and 15mm wide at the fissure. It forms large clumps of 20 or more heads. Window Large, dark olive green, sometimes brownish and often with a distinct pinkish border to the window. Islands absent to many, pinkish-brown to greyish-green. There are often dark green flecks in the window which are sometimes reticulate in arrangement. Short reddish-brown lines are sometimes present around the edge of the window. 51 LITHOPS RUSCHIORUM (Dint. E. Br. A species with a very deep cleft between the leaves, the tops of which are distinctly convex.
Concepts of Symbiogenesis: A Historical and Critical Study of the Research of Russian Botanists (Bio-Origins Series) by Liya Nikolaevna Khakhina, Robert Coalson, Dr. Lynn Margulis, Professor Mark McMenamin