Contributions from the Herbarium of Columbia 
No, 
to, 
aT 
VSS 
No. 16, 
No. 17, 
College. 
A Preliminary List of North American Species of Cyferus, with Descriptions 
of New Forms. By -N. L. Britton (1886),. 2 bie 25 cents. 
Cerastium arvense, L., and its North American Varieties. By Arthur Hol- 
lick and N. L. Britton (1887). (Out of print.) 
Plant Notes from Temiscouata County, Canada. By J. I. Northrop (1887). 
(Out of print.) 
A List of Plants Collected by Miss Mary B. Croft at San Diego, Texas. By 
N;L.Britton ‘and H. Hi Rusby (1887), 0 5 ee 25 cents. 
New or Noteworthy North American Phanerogams, By N. L. Britton 
(8388) 08 ee ee ae 25 cents. 
An Enumeration of the Plants Collected by Dr. H. H. Rusby in South 
America, 1886-1887. By N. L. Britton, (Twenty-three parts published ; 
not yet completed.) 
The Genus Aicoria of Rafinesque. By N. L. Britton (1888), . . . 25 cents. 
A Recent Discovery of Hybrid Oaks on Staten Island. By Arthur Hollick. 
C1GSG) ee ere ae eat 25 cents. 
A List of Plants Collected by Dr. E. A. Mearns at Fort Verde and in the 
Mogollon and San Francisco Mountains, Arizona, 1884-1888. By N. L. 
Britton. 
The General Floral Characters of the San Francisco and Mogollon Mountains 
and the Adjacent Region. By H. H. Rusby (1888),. . ... 25 cents. 
Contributions to American Bryology—An Enumeration of the Mosses Col- 
lected by Mr. John B, Leiberg in Kootenai County, Idaho. By Elizabeth 
G. Britton. (Out of print.) ; 
Preliminary Notes on the North American Species of the Genus 77ssa, 
Adans, - By Noi. Britton (3880) 6 es 6S . «25 cents. 
The Genus Zéeocharis in North America. By N. L. Britton (1889), 
25 cents. 
New or Noteworthy North American Phanerogams, II. By N. L. Britton 
CSG et eee Pee a ees . . . 25 cents. 
A List of State and Local Floras of the United States and British America. 
By IN, Li Bln (8890), 20 ee ee ee Le 
A Descriptive List of Species of the Genus Heuchera. By Wm. E. Wheel- 
Ole TiS era ee es 8 25 cents. 
New or Noteworthy North American Phancogiuie: Ill. By N. L. Britton 
OS ica kt ak as ee ee oe eae ee 25 cents. 
The Flora of the Desert of Atacama. By Thos. Morong (1891), 
25 cents. 
No. 18. Contributions to American Bryology, II. A supplementary Enumeration of 
Mosses collected by Mr. John B. Leiberg in-Kootenai County, Idaho. By 
Elizabeth G, Britton (1891), . . 2... ++ +e + ee + + . 25 Cents. 
