GREENE, EDWARD LEE. Critical notes on Antennaria. Pittonia 3: 318-323. 1898.

Antennaria arnoglossa, A. arnoglossa ambigens, and A. fallax described from the District of Columbia. GREENE, EDWARD LEE. Two new Gerardias. Pittonia 4: 51-52. pl. 9-10. 1899.

Gerardia decemloba and G. holmiana described from the District of Columbia. GREENE, EDWARD LEE. New species of Antennaria. Pittonia 4: 81-85. 1899. Notes on A. alsinoidee from the District of Columbia. Pittonia 4: 139-142. pl. 12. 1900.

GREENE, EDWARD LEE. Notes on violets.

Viola papilionacea from Analostan Island.

GREENE, EDWARD LEE. Studies in the Compositae, VIII. Pittonia 4: 242–284. 1901.

Bidens lugens and B. leptomeria described from the District of Columbia, or vicinity. GREENE, EDWARD LEE. New or noteworthy violets. Pittonia 5: 87-106. 1903. Describes Viola nepetaefolia and V. macrotis from the District of Columbia.

GRONOVIUS, JOANNES FREDERICUS. Flora Virginica exhibens plantas quas v. c. Johannes Clayton in Virginia observavit atque collegit. 210 p. 1743. Ed. 2, 12, 176, 8 p. map. 1762.

HALEY, WILLIAM D. Philip's Washington described. map X, 239p. Rudd & Carleton, N. Y. 1861. Botanical notes, p. 34-39.

HICKS, GILBERT HENRY. Notes on some plants of the District of Columbia. Asa Gray Bull. 4:71-72. 1896.

Chamaelirium carolinianum, Passiflora lutea, Chimaphila umbellata, Sida spinosa, Saxifraga virginiensis. HICKS, GILBERT HENRY. An unusual habitat for sundew. Asa Gray Bull. 5: 109– 110. 1897.

Fifteen associated species mentioned from Kensington, Maryland.

HITCHCOCK, ALBERT SPEAR. Notes on grasses. Rhodora 8: 205-212. 1906.

Panicum gravius, P. lanuginosum siccanum, and P. aculeatum, described from District of Columbia
and vicinity.
HITCHCOCK, ALBERT SPEAR, and CHASE, AGNES. The North American species of
Panicum. Contr. U. S. Nat. Herb. 15: I-XIV, 1-396, f. 1-370. 1910.
Records many species from the District of Columbia.

HOLM (HERMAN), THEODOR. Third list of additions tot he flora of Washington, D. C.
Proc. Biol. Soc. Wash. 7: 105-132. 1892. Fourth list
10: 29-43. 1898. Fifth list
Op. cit. 14: 7-22. 1901.

Op. cit.

HOLM (HERMAN), THEODOR. Contributions to the flora of the District of Columbia. Science, n. ser. 3: 24-35. 1896.

HOUSE, HOMER DOLIVER. The violets and violet hybrids of the District of Columbia and vicinity. Rhodora 8: 117-122, pl. 71-72. 1906.

HUNTER, WILLIAM. Botany of the Zoological Park. Ann. Rept. Smiths. Inst. 1890; 68-72, 1891. Assisted by L. F. Ward, and F. H. Knowlton.

About 350 species listed.

KNOWLTON, FRANK HALL. Additions to the flora of Washington and vicinity from April 1, 1884. to April 1, 1886. Proc. Biol. Soc. Wash. 3: 106-132. 1886. Thirty-five additional species, corrections and new localities; contains revised list of 238 Musci and Hepaticae and 251 Lichens, by E. Lehnert.

LE CONTE, JOHN EATTON. Observations on the North American species of the genus Viola. Ann Lvc. N. Y. 2: 135-153. 1828.

Viola obliqua from the District of Columbia.

LONG, BAYARD. Southerly range extensions in Antennaria. Rhodora 15: 117

122. 1913.

Antennaria parlinii noted from the District of Columbia.

MILLER, GERRIT SMITH, JR. The dogbanes of the District of Columbia.
Biol. Soc. Wash. 13: 79-90, pl. 2, 1898.

Proc.

MILLER, GERRIT SMITH, JR. The larg yellow pond lilies of the northeastern
United States. Proc. Biol. Soc. Wash. 15: 11-13, p. 1, pl. 2, 1902.
MILLER, GERRIT SMITH, JR. The species of Geum occurring near Washington.
Proc. Biol. Soc. Wash. 17: 101. 1904.

MILLER, GERRIT SMITH, JR, and STANDLEY, PAUL C. The North American specics of Nymphaea. Contr. U. S. Nat. Herb. 16: VIII, 63-108, IX. 40 f. pl. 35-47.

1912.

Nymphaea adrena only species from the District of Columbia.

MILLER, GERRIT SMITH, JR. The technical names of two dogbanes from the District of Columbia. Proc. Biol. Soc. Wash. 15: 35-36. 1902. MITCHELL, JOHN. Diesertatis bervis de principiis botanicorum et zoologorum deque novo stabiliendo naturae rerum congruo cum appendice aliquot generum plantarum recent conditorum. Ad virum celeberrimum Petrum Collinsonum ex Virginia transmissa et hujus favore cum D. D. Christ. Jacob Trew communicata. Act. Acad. Caes. Leop. Carol. 8: (apx.): 187-224. 1748.

MORRIS, EDWARD LYMAN. North American Plantaginaceae. III. Bull. Torrey Club 36: 515–530. 1909.

MORRIS, EDWARD LYMAN. "Occasional" leaves of Trillium. Pl. World 5: 92–93, pl. 13. 1902.

NORTON, JOHN BITTING and SMITH WALLS, E. P. The wild legumes of Maryland and their utilization. Md. Agr. Exp. Sta. Bull. 10: 97-124, figs. 1-17. 1905. Notes on 77 native and introduced species. PALMER, WILLIAM. The ferns of Hemlock Bluff. Pl. World 2: 143-147. 1899. PALMER. WILLIAM. A new locality for Asplenium pinnatifiidum. Fern. Bull. 7: 70-71 1899.

Abstracted from the Plant World 2: 143-147, 1899.

PALMER, WILLIAM. A rich locality. Fern Bull. 9: 18, 1901.

Notes on ferns growing near Potomac, Maryland.

PALMER, WILLIAM. The log fern. Fern Bull 10: 37-41. 1902.

PENNELL, FRANCIS W. Some records from the Potomac district. Torreya 11: 130131. 1911.

Eleocharis flaccida, Veronica scutellata, Galinsoga caracasana, and G. parviflora noted.

PENNELL, FRANCIS W. Notes on plants of the southern United States. II. Bull. Torrey Club 43: 401--421. 1916.

Smilax herbacea, S. hugeri, and S. pulverulenta noted from the District of Columbia and vicinity. PIETERS, ADRIAN JOHN. Plants growing on waste ground near Washington, D. C. Asa Gray Bull. 5: 24-27. 1897.

Fourteen species of weeds at Washington Heights.

POLLARD, CHARLES LOUIS, Viola sagittata hicksii. Bot. Gaz. 20: 326. 1895. POLLARD, CHARLES LOUIS. Some new or rare plants. Bot. Gaz. 21: 233–235.

1896.

Notes on Phacelia covillei and Perilla frutescens from the District of Columbia. POLLARD, CHARLES LOUIS. The purple-flowered, stemless violets of the Atlantic Coast. Proc. Biol. Soc. Wash. 10: 85-92. 1896. POLLARD, CHARLES LOUIS. Bot. Gaz. 26: 325-342. POLLARD, CHARLES LOUIS.

Further observations on the eastern acaulescent violets. 1898.

The ostrich fern in Virginia. Fern Bull. 7:71. 1899. POLLARD, CHARLES LOUIS. A new station for the gray polypody. Pl. World 5: 133-134. 1902.

A Great Falls station adds several hundred miles to its northeastern range. POLLARD, CHARLES LOUIS. The nodding pogonia in the vicinity of Washington. Proc. Biol. Soc. Wash. 16: 127. 1903.

Potomac-side Naturalists Club. Flora Columbiana, or catalogue of plants growing without cultivation, collected by members of the Potomac-side Naturalists Club, in the District of Columbia and its immediate vicinity. 27 p. Washington, 1876.

Prepared by a committee consisting of Dr. George Vasey, Prof. J. W. Chickering, Dr. E. Foreman, Prof. W. H. Seaman, and Dr. L. F. Ward. The mosses prepared by Rudolph Oldberg. Poto ac-Side Naturalists Club. Flora Columbiana with additions. 30 p. Washington. 1876.

Reprinted in Field & For. 3: 145, 161. 1878.

RAFINESQUE-SCHMALTZ, CONSTANTINE SAMUEL. Essential generic and specfic chars cters of some new genuses and species of plants observed in the United States of Ar erica, in 1803 and 1804. Med. Repos. N. Y. 11: 356–363. 1808. Describes "Canethus" [Ceanothus] herbaceus from "near the falls of the Potowmack, between the rocks," and Euphorbia uniflora, from "between Baltimore and Washington." RAFINESQUE SCHMALIZ, CONSTANTINE SAMUEL An essay on the exotic plants, mostly European, which have been naturalized, and now grow spontaneously in the Middle States of North America. Med. Repos. N. Y. 14: 330– 345. 1811.

Lists several species from Washington.

RAY, JOHN. Historia Plantarum. 2: 1928-1928 bis. 1688.

Contains a list of plants observed in Virginia by Rev. John Bannister.

[RICH, OBADIAH.] Synopsis of the genera of American plants. 176 p. Georgetown, D. C., 1814.

The authorship of this work was for a long time in doubt in libraries. William Darlington in his memorials of John Bartram and Humphrey Marshall 1849 says on p. 25 the above "understood to be compiled by O. Rich, Esq." Brereton, Florae Columbianae Prodromus 1830, p. 7, also credits it to O. Rich and on p. 86 copies a paragraph verbatim from p. viii of the "Synopsis" but says it is from a learned and experienced Botanist, now in London." Obadiah Rich settled in London in 1828 and died there in 1850.

RICKER, PERCY LEROY A list of the vascular plants of the District of Columbia and vicinity. Prepared for the use of the Botanical Society of Washington. iv. 133 p 1906. (Letter press, not published.)

RIDGWAY, ROBERT Additional notes on the native trees of the lower Wabash Valley. Proc U S. Nat. Mus. 17: 409-442 pls 10-15 1884.

Includes 28 species of trees from near Falls Church, Virginia, and 47 species from near Laurel, Maryland.

ROBINSON, BENJAMIN LINCOLN. Further notes on the vascular plants of the northeastern United States. Rhodora 10:64-68. 1905.

Panicum huachucae silvicola Hitchc. & Chase described from the District of Columbia.

RUSSELL, W. T. Statistical map No. 4, showing the lines of shade trees, City of Washington. Annual Report, Commissioners, D. C., 1880. Sixty-five species listed and located on map.

SAUL, JOHN Á. Tree culture or a sketch of nurseries in the District of Columbia. Rec. Columb. Hist. Soc. 10: 38-62. pl. 2-7. 1907.

SCRIBNER, FRANK LAMSON. American Grasses. I. U. S. Dept. Agr. Div. Agrost. Bull. 7. 1896.

The type of Panicum columbianum first described on p. 78 is from Brookland, District of Columbia. SEAMAN, WILLIAM HENRY. Remarks on the flora of the Potomac. Field & For. 1:21-25. pl. 1. 1875.

SEAMAN, WILLIAM HENRY. The Water Chinquapin, Field & For. 1: 17. 1877. Notes on Nelumbium luteum, Trapa bicornis, Nymphaea minor, and Calla palustris in lotus pond, in Department of Agriculture grounds.

SHREVE, FORREST. The plant life of Maryland, by Forrest Shreve, M. A. Chrysler, Frederick H. Blodgett, and F. W. Beekey. Md. Weather Service Reports, n. ser. 3: 1-533. 1910.

SMALL. JOHN KUNKEL. Flora of the southeastern United States, ed. 1. 1903. Ed. 2. 1913.

Oenothera parviflora described from the District of Columbia.

SMITH, CHARLES PIPER. Plurality of seeds in acorns of Quercus prinus. Rhodora 16: 41-43. f. 1-3. 1914.

STANDLEY, PAUL CARPENTER. A new species of Iresine from the United States. Proc. Biol. Soc. Wash. 28: 171-174. 1915.

Iresine rhizomatosa from Plummers Island.

STEELE, EDWARD STRIEBY. Sixth list of additions to the flora of Washington, D. C., and vicinity. Proc. Biol. Soc. Wash. 14: 47-86. 1901.

STEELE, EDWARD STRIEBY. New plants from eastern United States. Contr. U. S. Nat. Herb. 13: 359-374. 1911.

Mentions numerous species from the District of Columbia.

SUDWORTH, GEORGE BISHOP. An economic mulberry. Bull. Torrey Club 19: 2122. 1892.

SUDWORTH, GEORGE BISHOP. See Fernow, B. E. TIDESTROM, IVAR. Elysium marianum. Pt. 1. 7 pl. Washington, 1908; ed 2. 64 p. 8 pl. 67-96. pl. 9-12. 1908. Pt. 3. Salicaceae, 60 p. 14 pl. 1910.

TIDESTROM, IVAR. Notes on Peltandra Rafinesque. 1910.

TIDESTROM, IVAR. Populus virginiana Fouger.

1911.

Ferns and fern allies, 56 p. 1907. Pt. 2. Evergreens, p. Ceriferae, Betulaceae, front.

Rhodora 12: 47-50. pl. 83. Rhodora 13: 195–199. f. 1.

TIDESTROM, IVAR. Notes on the flora of Maryland and Virginia. I. Rhodora 15: 103-106. 1913. Notes on conifers. II. Op. cit. 15: 201-209. 1914. Notes on Populus.

VASEY, GEORGE. Exotic trees of Washington. Field & For. 1: 17-19. 1875.

Twenty species mentioned.

VASEY, GEORGE. Rare and noteworthy trees of Washington. Field & For. 1: 33– 37. 1875.

Mentions about 252 species of ornamental trees native to the United States and a few foreign species.

VASEY, GEORGE. On three hybrid oaks near Washington, D. C. Bull. Torrey Club 10: 25-26. pls. 28-30. 1883.

VASEY, GEORGE. Notes on Cyperus refractus Eng. Bull. Torrey Club 10: 32. 1883.

VASEY, GEORGE. Tuberiferous Hydrocotyle americana L. Bull. Torrey Club 13: 28-29. 1886.

WARD, LESTER FRANK. Sweet cicely as a bur. Bull. Torrey Club 11: 92-93. 1884.

WARD, LESTER FRANK.

A note on Cunila. WARD, LESTER FRANK.

Frost plants. Science 23: 66. 1894.

Oaks of the Potomac side. Field & For. 1: 39-42. 1875. Lists 11 species, 3 varieties, and 6 hybrids. WARD, LESTER FRANK. 1875.

Conifers indigenous to the District. Field & For. 1: 54.

Notes on Pinus rigida, mitis, inops, strobus, and Juniperus virginiana. WARD, LESTER FRANK. Tipularia discolor. Field & For. 2: 66-67. 1876. WARD, LESTER FRANK. Guide to the flora of Washington, D. C., and vicinity.

Bull. U. S. Nat. Mus. 26: 1-264. 1881. (Map.)

Check list, p. 148-207. (Reprinted as Bull. 22, U. S. Nat. Mus.) 1211 Phanerogama, 42 Ferns, etc. 98 Musci, 28 Hepaticae, 84 Algae. For six supplements see Ward, Knowlton, Holm, and Steele. WARD, LESTER FRANK. Field and closet notes on the flora of Washington and vicinity. Bull. Phil. Soc. Wash. 4: 64-119. 1881.

Practically the same as the introduction to his Guide to the Flora of Washington. WARD, LESTER FRANK. List of plants added to the flora of Washington from April 1, 1882, to April 1, 1884. Proc. Biol. Soc. Wash. 2: 84-87. 1884. Forty-one additions and a few corrections.

WARD, LESTER FRANK. Glimpses of the cosmos, 2: 448-464. 1913.

Contains a history of his Guide to the Flora of Washington.

WARDEN, DAVID BAILLIE. A chorographical and statistical description of the District of Columbia, vii, 212 p. Washington, 1816. Florula columbiana, p. 191-209.

WOOLRIDGE, JOHN. Natural advantages of the City of Washington, D. C. p. 15-55, Dayton, Ohio. 1892. Advance sheets.

Notes on the District of Columbia flora from L. F. Ward; Flora of Washington and vicinity are included on p. 50-55.

BOTANY. Chenopodium nuttalliae, a food plant of the Aztecs. W. E. SAFFORD, Bureau of Plant Industry.

In connection with his study of the economic plants of Mexico the writer has come upon a Chenopodium eaten in the form of a vegetable by the ancient Mexicans, but hitherto unknown to botanists, and incorrectly referred by several Mexican writers to the European Chenopodium bonus-henricus L., to which it bears little resemblance. The material from which this species is here described was received by the writer from the wellknown archeologist and ethnologist, Mrs. Zelia Nuttall, of Casa Alvarado, Coyoacan, near the city of Mexico, who collected it in response to a request for the seeds of "huauhtli."

Instead of Amaranthus seeds, which he had expected, the writer received the seeds and inflorescence heads of a Cheno