No. 29. New or Noteworthy North American Phanerogams, VI. By N. L. Britton 
No. 30. Ranunculus repens and its Eastern North American Alles. By N. L. 
CO oe GP Se Kee Ga eae eee 25 cents, 
No. 33. A New Species of Listera, with Noteson Other Orchids. By Thos. Morong 
(i nape Ook we go ae gl pe . 25 cents. 
No. 34. The North American Species of Lespedeza. By N. L. Britton (1893) 
25 cen 
No. 35. An Enumeration of the Plants Collected by Dr. Thos. Morong in Paraguay 
1888-1890. By Thomas Morong and N. L, Britton, with the assistance of 
Miss Anna Murray Vail (1892-1893),. . 0. 2. 7 ee ee $1.50 
No, 36. An Examination of the Seeds of some N ative Orchids. By Carlton C. Curtiss 
/ (1893), MS Or ee 3 % . Ne a eR aL, ee See ree 25 cents, 
No. 37. Further Notes on American Species of Polygonum. By John K. Smal] 
Sot 4 Serpe anne Pee: gre Peer re 25 cents. 
No. 38. New or Noteworthy North American Phanerogams, VII. By N. L. Britton 
CHOS Sor ee sie <9 5 ee 
No. 39. Contributions to American Bryology, II1I.—Notes on the North American 
Species of Orthotrichum. By Elizabeth G. Britton, . . . 25 cents: 
No. 40. New Genera of Plants from Bolivia, By H. H. Rusby (1893), . 25 cents: 
No. 41. The Altitudinal Distribution of the Ferns of the Appalachian Mountain Sys- 
tem. By John K. Small (1893), . 6. 6 i oe 25 cents. 
No. 42. Notes upon various Species of Iridacese and other Orders. By Thomas 
Monong (1803) 5 ok FR ee ae 25 cents. 
No. 43, Notes on the Flora of Southeastern Kentucky. By*T. H. Kearney, Jr. 
ce rere Cera er Scie eae oi 25 cents. 
No. 46., Plants from Virginia, new toyGray’s Manual Range with Notes on _ ee 
Species. By A, A. Heller (1894), Se 
No. 47. New or Noteworthy North American Phanerogams, VIII. By N. ato 
Wh CIRO ei ccs a be panera” 
No. 48. Contributions to American Bryology, V.—Notes on the North American i. 
Species of Weissia (Ulota), ' By Elizabeth G. Britton (1894), 25 °° 
No, 49. A Study of the Scale-characters of the Northeastern American Species © 
‘ Cuscuta, By W. D. Matthew (1893),..,... . sb ae Espa ie 
No. 50. A Study of the Genus Psoralea in America. By Anna Murray set 
(Me he ee 5 eee 
No. 51. Our Conception of « Species” as modified by the Doctrine of Evolution. 
By N. L. Britton (1894), . cents- 
The series as above listed will be supplied for $8. 
Copies of the Catalogue of Plants found in New Jersey (1889), by N- L. Britton, . : 
may be had for $2. : 
ORE i 
ete Aa aye ee aR Oe okay Pate. 
Address 
DR. THOS. MORONG, ~ : 
Curator of the Herbarium, Columbia College, aa : 
