﻿No. 134. On an abnormal Cone in the Douglas Spruce, Pseudotsuga mucronata. 



By F. E. Lloyd (1898), 25 cents. 



No. 135. Two New Grasses from Van Cortlandt Park, New York City. By E. P. 



Bicknell (1898), 25 cents. 



No. 136. Sehginella rupestris and its allies. By L. M. Underwood (1898), 



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No. 137. A Revision of the North American Species of Ophioglossum. By Eliza- 

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No. 138. Studies in the Botany of the Southern United States— XIII. By J. K. 



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No. 139. A new Southwestern Rose. By E. O. Wooton (1898), .... 25 cents. 



No. 140. On hypertrophied Scale- Leaves in Pinus ponderosa. By Francis E. Lloyd 



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No. 141. Studies in the Asclepiadaceae — III. By Anna Murray Vail (1898), 



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No. 142. New American Hepaticae. By Marshall A. Howe (1898), . . 25 cents. 

 No. 143. A Revision of the North American Eurhynchia. By A. J. Grout (1898), 



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 No. 144. The Study of Botany in High Schools. By L. M. Underwood (1898), 



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 No. 145. The Genus £>yntherisma in North America. By G. V. Nash (1898). 



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 No. 146. Notes and Descriptions of North American Plants — I. By J. K. Small 



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No. 147. A Revision of the Genera Chloris and Eustachys in North America. By 



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No. 148. New Plants from New Mexico, I., II., III. By E. O. Wooton ( 1898). 



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 No. 149. Studies in the Botany of the Southeastern United States— XIV. By J. K. 



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No. 150. American Ferns — I. The ternate Species of Botrychium. By L. M. 



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Title-pages for Vols. I., II., III. IV., and V. can be supplied. 

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Copies of the Catalogue of Plants found in New Jersey (1889) by N. L. Britton, 

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Prof. L. M. Underwood, 



Columbia University, NEW YORK CITY. 







A Text-Book of General Lichenology 



With Descriptions and Figures of the Genera Occurring in the Northeastern 



United States. 



By ALBERT SCHNEIDER, M. 8., M.D. 



The only modern work on North American Lichens, including a discussion of their 

 Morphology and Physiology, with a special reference to the phenomena of symbiosis. 



Large octavo, 230 pages, 76 full-page plates. Price in paper, net, $3.80; in cloth, 

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WILLARD N. CLUTE & COMPANY. Bingham 



