Gibbs, R. E., Phyllospadix as a Beach-Builder, the Am. Naturalist, 
36, 101-109, 1902. 
Gifford, J., Practical Forestry. New York. 1902. 
Goebel, K., Pflanzenbiologische Schilderungen. Theil II. VI. Was- 
ser-Pflanzen. Marlburg, 1893. 
Graener, P., Die heide norddeutschlands und die sich anschliessenden 
formationen in biologischer Betrachtung, Leipzig, 1901. (Bot. 
Gaz., 35, 293, 1903.) 
Gray, A., The flora of Japan, Mem. Am. Acad, N. S., 6, 1859. 
——-. Sequoia and its history, Proc. Am. Assn. Adv. Sci., 21, 1-31. 
1872. 
—— -—- Forest geography and archaeology, Am. Jour. Sci. 3rd ser., 
16, 85, 183, 1878. 
The pertinacity and predominance of weeds., Am. Jour. 
Science and Arts, 3rd ser., 18, 161, 167, 1879. 
Grisebach, A., Die vegetation der Erde nach klimatischen Anordnung, 
Leipzig, 1872. French edition by Tchiatcheff, Paris, 1877. 
Groom, P., On a new saprophytic monocotyledon, Ann. Bot., 9, 45- 
53, pl. 9) 1895. 
————— On Thismia Aseroe (Beccari) and its mycorhiza, Ann. Bot., 
9)32/-361, pl, 13,145) 1895: 
Haberlandt, H., I. Anatomisch-physiologische untersuchungen Uber~ 
das tropische Laubblatt. (I.) Ueber die transportation einiger 
tropenpflanzen. Sitzungberichte der Wiener akademie, 101, Abth. 
1, 1892. 7 
—_—_—_—_— ————  Vol.2 (II) Ueber wassersecernirende und -absorbir- 
_ ende Organe. (1 Abhandl)., 108, Abth. 1, 1894. 
—— — —— - —— — Ibid, 104, Abth, 1, 1895. 
Halsted, B. D., The migration of weeds. Proceedings Am. Ass’n. 
Adv. Sci., 304-312, (1890), 1891. 
Harper, R, M., Botanical explorations in Georgia during the summer 
of 1901, Bull. Torr. Bot. Club, 80, 282-295, II. Noteworthy 
species., Bull. Torr. Bot. Club, 30, 319-342, 1903. . 
—_—~——— — — Explorations in the coastal plain of Georgia during the 
season of 1902, Bull. Torr. Bot. Club, 31, 9-27, 1904. 
Harshberger, J. W., A phyto- geographic sketch of extreme southeast- 
ern Pennsylvania, Bull. Torr. Bot. Club, 31, 125-159, 1904. 
Heer, Flora fossilis arctica, and suppls., 1864-78. 
Hill, E. J., Flora of the White Lake region, Michigan, and its ecolog- 
ical relations (with map),, Bot. Gaz., 29, 419-436, 1900. 
Hitchcock, A. S., Ecological plant geography of Kansas, Trans. Acad. 
Sci. St. Louis, 8, 55-69, 1898: 
—--— Methods used for controlling and reclaiming sand 
dunes, U. S. Dept. Agri., Bureau of Plant ind., Bull. No. 57, 9-36, 
pl. 1-9, 1904. 
Holzinger, J. M., Lake McDonald and vicinity, Bull. of the Am. Bue 
reau of Geography,1, 3-17, 1900. 
62 


