Contributions from the Herbarium of Columbia 
No. 4. 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. 
No. 5. New or Noteworthy North American Phanerogams. By N. L. Britton 
REGO )s shi a ee ee gig i, a Cenk 
No. 6. 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.) 
No. 7. The Genus Hicoria of Rafinesque. By N. L, Britton (1888), . . 25 cents. 
No. 8. A Recent Discovery of Hybrid Oaks on Staten Island. By Arthur Hollick. 
(EBRD oe Oe ae eer ne 25 cents. 
No. 9. A List of Plants Collected by Dr. E. A. Mearns at Fort Verde and in the 
a and San Francisco Mountains, Arizona, 1884-1888. By N. L. 
ritton. 
The General Floral Characters of the San Francisco and Mogollon Mountains 
and the Adjacent Region. By H. H. Rusby (1888),. . . . . 25 cents. 
No. 11 Preliminary Notes on the North American Species of the Genus 77ssa, 
pian By NL, Baten (he oe i cc es 25 cents. 
No. 12. The Genus Eleocharis in North America. By N. L. Britton (1889), 
25 cents. 
No. 13. New or Noteworthy North American Phanerogams, II.. By N. L. Britton 
Oy se ee re ee a 25 cents. 
No. 14. A List of State and Local Floras of the United States and British America, 
By N. L. Britton (1890), Se ee CO aes Maer re Miah Ta te ee eg . Br. 
No. 15. A Descriptive List of Species of the Genus Heuchera. By Wm. E. Wheel- 
GOR. £1800) 6 Re ee pact Fale tat Wee ae . 25 cents. 
No. 16. New or Noteworthy North American Phanerogams, III. By N. L. Britton 
SL aad tee ee a Pee ee ee ees Ce ak 25 cents. 
No. 17. The Flora of the Desert of Atacama. By Thos. Morong (1891), . 25 cents. 
No. 19, Notes on North American Halorage. By Thos. Morong (1891), . 25 cents. 
No. 20. New or Noteworthy North American Phanerogams, IV. By N. L, Britton. 
CEN a i ee eines sya 4 25 cents. 
No. 21. Notes on the North American Species of Eriocaulee. By Thos. Morong 
RE ae oe ae Se eee ae eit, lee richie 25 cents. 
No. 22. New or Noteworthy North American Phanerogams, V. By N. L. Britton 
NS ae ee ea ee Ad 25 cents — 
No. 23. The American Species of the Genus Amemone and the Genera which have ~ 
been referred to it. By N. L. Britton (1891), . ; . . 25 cents. 
No. 24. Review of the North American Species of the Genus Xyrzs. By Heinrich 
Rien (1B a a pe . . . 25 cents. 
No, 25. A Preliminary List of the Species of the Genus A/eibomia occurring in the 
United States and British America. By Anna M. Vail (1892), . 25 cents. 
No. 26. A List of Species of the Genera Scirpus and Rynchospora occurring in North 
America, By Ni L. Britton (t899).0 4 6h 4 oe a - » 25 cents. 
No, 27. Note on a Collection of Tertiary Fossil Plants from Potosi, Bolivia. By N. 
Ly Britton (1809); 6 eo 3 xc Ree eae shee ha. COS 
No. 28. The Anatomy of the Stem of Wistaria Sinensis. By Carlten C. Curtiss 
(1892), ; Fe a 3 35 a6 eee. 
No. 29. New or Noteworthy North American Phanerogams, VI. By N. L. Britton 
(1892), . . . . . ie a ae Ee a a ee & 25 cents. 
No. 30. - Ranunculus repens and its Eastern North American Alles. By N. L, 
College. 
[The numbers omitted from this list are out of print. ] 
Britton (1892), Dob Pie ai ks a he ao ee c+ Sy OE. 
Preliminary List of American Species of Polygonum. By John K. Small. 
(R08), se ee a eee es ascents, = 
