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(E.) 



(290) Lubbock, ]., Phytobiological observations ; on the forms of seedlings 



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(291) Lucas, C, Eine merkwürdige Pflanzenansiedelung. (Deutsche bot. 



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(292) Ludwig, K., Beitrag zur Flora von Christburg und Umgegend. (Ber. 



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(293) Lutz, Anne M., A preliminary Note on the Chromosomes of Oenothera 



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(294) — Chromosomes of the somatic Cells of the Oenotheras. (Science. N. S. 



XXVII. 1908. p. 335.) (C.) 



(295) — Notes on the first Generation Hybrid of Oenothera lata Q X O. gigas <3. 



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(296) — A Study of the Chromosomes of Oenothera Lamarckiana, its Mutants 



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(297) r+ Triploid Mutants in Oenothera. (Biol. Centralbl. XXXII. 1912. 



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(298) ' — Oenothera Mutants with diminutive Chromosomes. (Americ. Journ. 



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(299) — Fifteen- and Sixteen-Chromosome Oenothera Mutants. (Americ. Journ. 



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(300) — Characters indicative of the Number of somatic Chromosomes present 



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(301) Mac A v o y , Blanche, The Reduction Division in the Microsporocytes 



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(302) Mac Dougal, D. T., The Origin of Species by Mutation. (Torreya. 



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(304) — Evening Primroses (Oenothera). (Torreya. IV. 1904. p. 91 — 92.) 



(305) — Heredity and the Origin of Species. (Contrib. N. Y. Bot. Garden. 



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(306) — V a i 1 , A. M., S h u 1 1 , G. H. and S m a 1 1 , J. K, Mutants and Hybrids 



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(307) — S tu dies in organic Evolution. (Journ. New York bot. Garden. VI. 



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(308) — Discontinuous Variation and the Origin of Species. (Torreya. V. 1905. 



p. 1—6; Science. N, S. XXI. p. 540—543.) (E.) 



5* 



