u)04] Notes on Publications recently received 6i 



1902, IV. M. Canby, Mt. Hope, June 24, 1901, A. A. Heller. S. W. 

 Virginia, July 16, 1892, /. K. Small. This form has been for 

 many years in cultivation at the Arnold Aboretum, where it was 

 received under the name V. laevigatum from the nursery of Parsons 

 & Son, Flushing, Long Island. As an ornamental shrub it is supe- 

 rior to V. dentaimn and V. 7'e/iosiim on account of its larger corymbs 

 and larger dark green foliage and more vigorous habit. 



V. VENosuM, var. longifolium, comb. nov. V. dentatum, var. 

 longifolium, JJippel, 1. c. 183 (1889); Koehne, Deutsch. Dendr. 537 

 (1893). V. loiigifolium, " Loddiges " Zabel. in Beissner, Schelle & 

 Zabel, Handb. Laubholz-Ben. 441 (1903). This form known only 

 in cultivation differs in its narrower and longer leaves, pubescent on 

 both sides, more densely beneath, with single or forked hairs. In 

 the plant cultivated at the Arnold Arboretum the inflorescence and 

 the young branchlets are glabrous, but as Dippel and Koehne say 

 that they are either glabrous or pubescent, I am inclined to refer 

 here a Viburnum collected by Dr. Mellichamp in 1878 near Bluffton, 

 S. C. (herb. Gray) which has the inflorescence and the young branch- 

 lets stellate-tomentose, but agrees otherwise with the cultivated plant. 



Arnold Arboretum. 



NOTES ON PUBLICATIONS RLCENTLV RKCEIVKI). 



Professor T. C. Porter's long expected (now alas posthumous) 

 Flora of Pennsylvania is at hand,^ having been edited and provided 

 with analytical keys by Dr. J. K. Small, the nephew of author. The 

 work is an excellently printed royal octavo volume of 362 pages 

 enumerating no less than 2201 species. It is restricted to the sper- 

 matophytes and the sequence of orders and families is essentially that 

 of Engler & Prantl's Natiirlichen Ptianzenfamilien. However, sev- 

 eral departures from this arrangement are made, and not always with 

 happy results. Thus the Co?npositae are divided, as by several recent 

 writers, into three families, the Cichoriaceae, Atnbrosiaceae, and Com- 

 positae. About the practical value of this division there will of course 

 be a difference of opinion, but if it is made, there would certainly 



' Flora of Pennsylvania by Thomas Conrad Porter, I). D., LL. D. Ed. by 

 John Kunkel Small, Ph. D. Ginn & Co., Boston, 1903. 



