452 F.-Höck: Pflanzengeographie. 
615. Piper, Ü. V. The Flora of Mount Rainier. (Mazama, 2, p. 93—117.) 
N. A. 
6154, Piper, C. V. and Beattle, R. K. The Flora of the Palouse Region. 
(Pullman, Washinston, 1901. 208 p.) 
616. Small, J. K. An Alleghanian Rudbeckia. (Torreya,l, 1901, p. 67 — 68.) 
N. A. 
617. Beadle, €. D. A shrubby Oak of the southern Alleghanies. (Bilt- 
more Bot. Stud. I, 1901, p. 47—48.) N. A. 
617a. Beadle, €.D. New Species of Thorns from the Southeastern States. 
(Eb., 25—47.) N. A. 
617b. Beadle, €. D. and Boynton, F. E. Revision of the Species of Mar- 
shallia. (Eb., p. 1— 12.) N. A. 
617c. Boynton, €. L. and Beadle, (. D. Notes on certain Uone-Flowers. 
(Eb., p. 11-18.) N. A. 
Ueber Rudbeckia-Arten. Vgl. B. 598. 
618. Reed, H. S. The Ecology of a Glacial Lake. (Michigan Academy 
of Science, p. 43—45.) 
Verf. schildert die zonenweise Anordnung der Pflanzenwelt in Seen 
westl. von Ann Arbor. Die 6 konzentrischen Zonen sind vorwiegend gekenn- 
zeichnet durch 1. Characeae, 2. Potamogeton, 3. Nymphaea, 4. Carex und Sphag- 
num, 5. Salix und Populus, 6. Gramineae und Oompositae. Verf. betrachtet die 
Pflanzenwelt als beeinflusst durch die Eiszeit, da nordische Formen vorwiegen. 
619. Pieters,. A. J. The plants of Western Lake Erie, with observations 
on their distribution. (Extracted from U. S. Fish Commission Bulletin for 1901, 
p. 67—-79, Plates 11—20.) Washington, 1901. 
620. Dobbin, F. Spring in the Anaquassacook Hills. (Plant World, IV, 
1901, p. 47-49.) 
Frühlinsspflanzen des Gebiets von der Grenze New-Yorks und Vermonts 
werden genannt. 
621. Griggs, N. F. Additions to the Sandusky Flora. (Ohio Nat., 1, 
1901, p. 97-98.) 
621a. Kellerman, W. A. Notes on the Flora of Sandusky. (Eb., p. 82—85.) 
621b. Additions to the Ohio Flora. (The ©. S. U. Naturalist, I, 1900 
p. 15-16.) | 
621c. Kellerman, W. A. An Ohio Station for Ampelopsis cordata. (Eb., 2—4.) 
621d. Kellerman, W. A. Twelve Plants additional to the Ohio List. 
(Ohio Nat., 1, 1901, p. 121-122.) 
621e. Kellerman. W. A. Fifty Additions to the Oatalogue of Ohio Plants. 
(Ohio Nat., 2, 1901, p. 157-169.) 
622. I F. J. Geophilous Plants of Ohio. (Ohio Naturalion 2, 190% 
p. 182—133f., 1.) 
6222. Kellerman, W. A. Twelve additions to the Ohio plant list. (The 
Ohio Naturalist, 1, 1901, p. 59--60.) 
623. Small, J. K. A. Kentucky Cornel. (Torreya, I, p. 54—56b.) N.A. 
624. Price, S. F. Notes from Western Kentucky. (The Plant World, IV, 
1901, p. 143—144.) 
625. Bessey. E. A. Arceuthobium pusillum. (Bot. G., 32, 1901, p.. 64—65) 
ist in Michigan stellenweise sehr häufig. 
626. Farwell, 0. A. A Catalogue of the Flora of Detroit. (Ann. Rep. 
Mich. Acad. Sei., 2, 1901, p. 31-68.) 
