Lawson, Georg:e. 



The fern flora of Canada. 



81 pp. 1 pi. Halifax, 1889.* 

 (pp. 221-251.) 

 Synopsis of Canadian ferns and filicoid plants, 

 pp. 262-300, Montreal, 1864.* 



(The Canadian Naturalist and Geologist, Aug., 1864. > 



Lawson, Peter. 



List of plants of the tir tribe. 

 Edinburgh, 185 L 



Pinetum Britannicum. 



Vol.1, 110pp. 15 pis. Edinburgh and London, 1884. 



LB-L 425 

 2,+216 pp.+36pls. Edinburgh and London, 1884. 



LB-L 425 

 3,+330 pp.-|-53 pis. Edinburgh and London, 188^1. 



LB-L 425 



(Text compiled by E. J. Ravenscroft. Botanical descriptions by Lindley 

 and Murray.) 



Lawson, Peter and Son. 



Synopsis of the vegetable products of Scotland in their relation 

 to agriculture. 



138+128+64+80+72+83 pp. Edinburgh. 1851. J-L 425 



Lay, W. A. 



Elements der naturgeschichte ... II pflanzenkunde. 



1 ed. 64 pp. Biihl, 1892. 



2 ed. 106 pp. Buhl, 1896. 



Layen, 



Flore du Grand-Duche de Luxembourg. Contribution a I'etude des champignons. 

 124 pp. Luxembourg, 1877.* 



Lazaro e Ibiza, Bias. 



Botanica descriptiva. 



Vol. 1. 736 pp. Madrid, 1896. 



2. 1038 pp. Madrid, 1896/7. 



2 ed. Vol. 1, 828 pp. Madrid, 1906. 



2, 820 pp. Madrid, 1907. 



Notas micologicas. Coleccion de datos referentes a los hongos de Espana. 

 47 pp. 3 pis. Madrid, 1907.* 



(Mem. Real. Soc. Espanola de Hist. Nat., V. 1907.) 



3 ser. 55 pp. 4 pis. Madrid, 1912.* 



(Mem. Real. Soc. Espanola de Hist. Nat. VII, 1912.) 



Nuevos tuberaceos de Espana. 



30 pp. 4 pis. Madrid. 1908.* 



(Revista Real Acad, de Sci. Exact. Fisic. y. Nat. de Madrid.) 



Sobre el herbario espanol del Jardin Botanico. 



4 pp. Madrid, 1911.* 



(Bol. Real Soc. Espanola de Hist. Nat., 1911.) 



Leavitt, Robert Greenleaf. 



Outlines of botany. 



272 pp. New York, 1901. BA-L 439 



Leberle, H. 



Beitrage zur kenntnis der gattung Mycoderma. Diss. 

 106 pp. 2 pis. Miinchen, 1909. 



Lebeuf, V. F. 



Culture des champignons de couches et de bois et de la truflfe. 

 100 pp. Paris, 1867. HI-L 443 

 116 pp. Paris, 1882. 

 100 pp. Paris. 1887. HI-L 443 



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