No. 44. Contributions to American Bryology, 1V. Notes on the North American 
Species of Orthotrichum—II. By Elizabeth G. Britton (1894), . 25 cents. 
No. 45. Studies in the Botany of the Southeastern United States, I. By John K. 
SUE SROs paw 5t Soe oe ac Ae ee ca . , . 25 cents. 
No. 46. Plants from Virginia, new to Gray’s Manual Range with Notes on other 
Speties.. By Ac A. -Heller. (1894) °- 9.14) 5 is Se - ,- 4 25 cents: 
No. 47. New or Noteworthy North American Phanerogams, VIII. By N. L. Brit- 
ROME Ig ce ar erie a ee ei teie Oho ie SS eie 25 cents. 
No. 48. Contributions to American Bryology, V.—Notes on the North American 
Species of Weissta (Ulota). By Elizabeth G. Britton (1894), 25 cents. 
No. 49. A Study of the Scale-characters of the Northeastern American Species of 
Cortuie. > By: We, Matthew (1503)i jj: 05 ee ee 25 cents. 
No. 50. A Study of the Genus Psoralea in America. By Anna Murray Vail 
; PAA oe ers Cb tet wn ere a ae a pe ae he 25 cents. 
No. 51. Our Conception of “Species” as modified by the Doctrine of Evolution. 
BG er rE CE DOR ic 2s ye gs Nig te Se tei eos 25 cents. 
No. 52. Contributions to American Bryology, VI. Western Species of Orthotrichum. 
By BP BGaey tas STEAM LE SOAN ioe gees te pe 25 cents. 
No. 53. Newand interesting Species of Polygonum. By J. K. Small (1894), 25 cents. 
No. 54. Contributions to American Bryology, VII. A revision of the Genus Phys- 
comitrium. By Elizabeth G. Britton (1894), ........- 25 cents. 
No. 55. The Genus Cassia in N. America, By Charles Louis Pollard (1894), 25 cents. 
No. 56. A Revision of the Genus Lechea. By N. L. Britton (1894), . . 25 cents. 
No. 57. New or little known Plants of the Southern States. By T. H. Kearney, Jr. 
EODN ope ae a te 6 es ee ae gs 25 cents. 
No. 58. A Contribution to the History of the Formation of the Lichen Thallus. By 
NI oe ATKIN TOUNG es ge ke ta eek ee 25 cents. 
No. 59. Studies in the Botany of the Southeastern United States, II. By John K. 
TEs UN AC? Gea CEN got Demy ea Sara ee IgG RNa ence 8 Rear Negeri Ms 25 cents. 
No. 60, Contributions to the American Bryology, VIII. A Revision of the Genus 
Sruchia, with Descriptions of Types and one new Species. By Elizabeth 
SSO BtOR CLEOA YS Sa os eee oe Np ee 25 cents. 
No. 61. The Smilacez of North and Central America. By Thomas Morong (1894) 
25 cents. 
25 cents. 
25 cents. 
Soe ete Seas ha ee NN 
ee ae, Oe ee 
ee ee i ea ee ae ae gy ge Te 25 cents. 
_ No. 65. Some new Florida Plants. By T. H. Kearney, Jr. (1894), . . . 25 cents. 
No. 66. Two new Genera of Plants from Bolivia. By H. H. Rusby(1894), 25 cents. 
No. 67. Family Nomenclature. By John Hendley Barnhart (1895), . . 25 cents. 
No. 68. A Revision of the North American Species of the Genus Cracca. By 
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A ee a 25 cents. 
No. 70, Studies in the Botany of the Southeastern United States, III. By John K. 
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No. 71. An Enumeration of the Plants Collected by Dr. Timothy E. Wilcox, U. S. 
Peat Sek eee, Soe Se, ee See 
No. 72. Contributions to American Bryology, X. 1. The Systematic Position of 
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No. 73. oe 16 hybrid Oaks ee the Southern States. By John K. Small 
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The series as above listed will be supplied for $10. 
Copies of the Catalogue of Plants found in New Jersey (1889) by N. L. Britton, 
may be had for $2. Address 
PROF. N. L, BRITTON, 
Columbia College, 
NEW YORK CITY. 
