BOTANICAL GAZETTE. 59 



tion of Pinus Elliottii, by Dr. George Engelmann. — This is a folio 

 pamphlet of about 30 pages, and contains three fine plates drawn on 

 stone by Mr. Paulus Roetter. The author has taken hold of a per- 

 plexing genus, and with his usual patience and success, has worked it 

 through, presenting us in this Revision the results of years of investi- 

 gation. A full description is given of the structure of stem, leaves, 

 and flowers of the genus, and then follows a new arrangement of the 

 species with notes upon such as the author himself has examined. 

 The position of the resm ducts in the leaves has been taken as one of 

 the most important characters in the sub-division ot the genus. This 

 character together with that furnished by the presence and position of 

 the hypoderm or "strengthening" cells makes the leaves a most impor- 

 tant factor in the determination of the species, second only to the 

 cone scales. The form of the fruit scale, together with other less 

 important characters, constitute two natural sections of the genus, 

 mainly Strobus and Pinaster. The subsections are then distinguished 

 by the position of the resin ducts in the leaf. Then comes the char- 

 acter of subterminal or lateral position of the female ament and the 

 cone, making the number of leaves in a sheath quite a secondary 

 character. This system preserves both natural and geographical alli- 

 ances. The genus Pinus contains between 60 anU 70 species, of 

 which the author enumerates 45 as having been examined by himself. 

 Two new species are described, P. Wrightii and P. Elliottii, the for- 

 mer being a Cuban pine, the latter growing along our southeastern 

 coast from South Carolina to Florida, and thence westward along the 

 gulf border, anii bearing the reputation of being by far the handsom- 

 est of all the southern pmes. 



Ferns of North America, Parts 24-27. — With a quadruple number 

 this magnificent work has concluded. While glad to have the com- 

 pleted work, we are sorry that this is the end, for we will miss the 

 pleasurable excitement that each number brought with it and the 

 eager haste with which the broad pages were cut, the life-like figures 

 studied, and the clear text glanced over. This concluding number con- 

 tains illustrations of Aspidiitm patens, Swz.; IVoodsia Oregana, Eaton; 

 W.obtusa, Torr. ; IV. scopulina, Eaton; Onocleasensibilis, L.; O. St ruth - 

 iopteris, Yio^man, ( Striithiopteris Germanica, VViUd. ) ; Pell(za aspera, 

 Baker ; Notholxna Parryi, Eaton ; Cheilanthes Lindhcimeri, Hook ; 

 Phegopteris polypodioides, Lee; Aspidium juglandifolium, Kunze; Asple- 

 nium Filixfamina, Bernh. ; Adiantum tenerum, Swz. ; Pteris 

 longifolia, L. ; Cheilanthes Fendleri, Hook ; C. myriophylla, Desv. ; C. 

 gracillima, Eaton ; Aspleniiim dentatum, L. ; Aspidium mohrioides, Bory, 

 Ceratopteris thalictroides, Brong. ; Asplcnium firmum, Kunze ; Ophio- 

 glossum vulgatum, L. ; O. crotalophoroides, Walt. ( O. bulbosum, Mx, ) ; 

 O. nudicatde, L. f. ; 0. palmatum, Plumier. The last plate is the 

 eightieth. 



Notes on the Bartratn Oak, by Isaac C. Martindale. — This is a 

 pamphlet of 24 pages giving the whole history of this much doubted 

 species, collecting from various botanical works all the facts concern- 

 ing it, many of which are very interesting. The object is to give 



