Contributions from the Herbarium of Columbia 
No. to. 
No. 11, 
No. 12, 
No. 13. 
a. 14. 
No. 1 5. 
No. 16. 
‘No. 17. 
No. 18, 
ic 
A Preliminary List of North American Species of Cyferus, with Descriptions 
of New Forms. By N. L. Britton (1886),. . 4. .... _ , 25 cents. 
Cerastium arvense, L.., and its North American Varieties, By Axtintr Hol. 
lick and N. L. Britton (1887). (Out of print.) 
Plant Notes from Temiscouata County, Canada. By J. 1. 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. H. Rusby (1887),..  ....... 25 cents. 
New or Noteworthy North American Phanerogams, By N. L. Britton 
(ISSR) Ss oa ke ye Os ae ee as . . 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 icoria of Rafinesque. By N. L. Britton (1888), . . . 25 cents. 
A Recent Discovery of Hybrid Oaks on Staten Island. By Arthur Hollick. 
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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 7issa, 
Adan; By Ni. Baek (9889), oe es 25 cents. 
The Genus £éeocharis in North America. By N. L. Britton (1889), 
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New or Noteworthy North American Phanerogams, II. By N. L. Britton 
188s), ae _ . , 25 cents, 
A List of State and Local Floras of the United States and British America. 
BPN. Li Batok (Sg ye Mik ye IS et Sr. 
A Descriptive List of Species of the Genus Heuchera. By Wm. E. Wheel- 
ock (1890), . . Se or a 25 cents. 
New or Noteworthy North American hanerogams, III. By N. L. Britton 
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The Flora of the Desert of. Atacama.. By Thos. Morong (1891), 
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Contributions to American Bryology, II. A supplementary Enumeration of 
Mosses collected by Mr. John B. Leiberg in Kootenai County, Idaho. By 
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