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prostrate or decumbent shrub with linear or oblanceolate leaves. 
P. cuneata, Raf., is the name taken up for the other species, de- 
scribed as erect or even strict in habit, with obovate few-toothed 
leaves, and grows in mountainous regions in the East. The third 
dwarf cherry inhabits the eastern Rocky Mountains and Great 
Plains; it is prostrate in habit and has shorter leaves than P. pu- 
mila, of which the author is inclined to regard it a variety. All 
the other species, which are in cultivation for their fruits, are al- 
luded to or described. P. nigra, Ait., separated from P. Amer- 
tcana, Marsh, by Prof. Sargent, is not regarded as distinct from 
that species, although Prof. Bailey appears to be somewhat un- 
certain of his decision in this case. : N. L. B. 
Descriptiones Plantarum nonnularum Horti Imperialis Botanico 
Petropolitani in Statu vivo examinatum. E. Regel. (Acta 
Hort. Petrop. xi. 299-314). 
The following new species are of American derivation: Agave 
Maximowicziana, Epidendrum pugioniforme, Masdevallia bifto- 
ra, M. macrochila, M. Muelleri, Miltonia flavescens, Waluewa 
pulchella, Solanum Dammianum and Claviga caulifiora. 
Development of the Ovulein Grindelia squarrosa. H.W. Norris. 
(Am. Nat. xxvi. 704, illustrated). 
Diseases of Trees likely to Follow Mechanical Injuries. W. G. 
Farlow. (Trans. Mass. Hort. Soc. part i. 140, 1891). 
Elementary Botanical Exercises. Charles E. Bessey. (J. H. 
Miller, Publisher, Lincoln, Nebraska, 1892). 
A series of thirteen short chapters outlining studies in the 
various forms of plant-life for beginners. 
Erstes Verzeichniss der von E. Ule in den Jahren 1883-87 od 
Brasilien gesammelten Pilze. O. Pazschke. (Hedwigia xxx. 
93). oes 
Two hundred and one species are listed, among which the fol- 
lowing are described as new: Urocystis Oxalidis, dicidium Ulea- 
num, Rostrupia Sclerie, Lachnocladium Ulet, Asterina Brasilien- 
sis, A. flexuosa, A. laxa, A. paraphysata, A. stricta, A. Uleana, 
4. Winterana, Meliola crenata, M. denticulata, M. tortuosa and 
M. Uleana. 
Ferns—Synoptical List of —IX. G. S. Jenman. (Bull. Bot. 
Depart. Jamaica, No. 32, 7, 1892). 
