CONTENTS. 
1. Reports FOR THE Year 1897:— 
a. Report of the Officers of the Board . . --.+-+- 7 
b. Ninth Annual Report of the Director . . .--. +--+ - 12- 
2. SCIENTIFIC PAPERS :— 
a. A Revision of the American Lemnaceae occurring North 
of Mexico — 
By Charles Henry Thompson . . mie it 
b. Notes on Salix longipes, Shuttlw. and its Relations to 8. 
nigra, Marsh — 
By N. M. Glatfelter, M.D. «© © 6 + s+ 8 es 43 
c. A Revision of the Genus Capsicum with especial Refer- 
ence to Garden Varieties — 
By H. 0. TM eee ess . & 
d. List of Cryptogams collected in the Bahamas, Ja amaica sand 
Grand Cayman — 
By Albert 8. Hitcheoock . ... +++ + - Ill 
e. Agave Washingtonensis and other Agaves flowering in the 
Washington Botanical Garden in 1897 — 
By J. N. Rose ...+ +> ai maga © 5 b 
f. The Species of Cacti commonly eaittratnd under the 
Generic Name Anhalonium — 
By Charles Henry Thompson . . + + + + + 127 
g. Notes and Observations — 
1, The Epidendrum venosum of Florida — 
By William Trelease . . »- + © © © © o + 137 
2, Miscellaneous Observations on Yucca — 
By William Trelease. » »- + © + © © © @ + 141 
3. The Missouri Dogbanes — 
By William Trelease. . . . 5 dics a ae 
4, A Coloring Matter found in some Borraginaceae _ 
By J. B.S. Norton . . « + eee 
5. Notes on some Plants, chiefly from the Southern 
United States — 
By J. B. 8. NOW es me eee 8 . 151 
6, A new Disease of cultivated Palms — 
By William Trelease . «© © © © © © © © 8 + 159 
7. Parmelia molliuscula — 
By Henry Willey 2 2 es © ee ee s+ + 160 
