190 Rhodora [OcroBE R 
and Forestiera for Adelia are maintained. Some "splitting" of 
families not in accordance with Gray’s Manual is observed, such as the 
separation of Ulmaceae and Moraceae from Urticaceae, Malaceae and 
Amygdalaceae from Rosaceae, and Caesalpinaceae from Leguminosae. 
Liquidambar is placed in Altingiaceae, and Aesculus in Aesculaceae. 
Malus is separated from Pyrus, and Padus from Prunus. The genus 
Cynoxylon is revived for Cornus florida. 
Betula papyrifera Marsh. is recognized as of specific rank, instead 
of being treated as a variety of B. alba. Celtis pumila (Muhl.) 
Pursh seems hardly worth specific rank. Michaux’s Acer nigrum, 
reduced by Britton to a variety of A. saccharum, is restored to the 
rank of a species. Fraxinus Michauzii Britt., although no synonymy 
is cited, seems to replace F. profunda Bush. Eggleston’s treatment 
of Crataegus shows several departures from the views set forth in his 
exposition of this genus in the last edition of Gray's Manual, and 
makes us wonder if this much-tortured group is ever going to return 
to stable conditions. C. pausiaca Ashe is replaced by C. cuneiformis 
(Marsh.) Eggleston; C. macracantha Lodd. var. succulenta (Schrad.) 
Eggleston is raised to specific rank; C. deltoidea Ashe is replaced by 
C. rugosa Ashe; C. coccinea L. var. oligandra Torr. & Gr. becomes 
C. Gattingert Ashe;. C. coccinea L. seems to be regarded as identical 
with C. pedicellata Sarg., and we are left in doubt as to what name 
should now be given to the C. coccinea of the Manual; and two species 
not mentioned in the Manual, C. neo-fluvialis Ashe and C. Calpo- 
dendron (Ehrh.) Medic., make their appearance. 
A few errors in the citation of authors are noted. Ostrya virginiana 
(Mill) K. Koch is cited as a synonym of O. virginiana (Mill.) Willd.; 
but Willdenow's name for the species seems to have been virginica. 
Betula lutea is ascribed to the elder rather than the younger Michaux, 
and in the same way Cornus alternifolia to the elder instead of the 
younger Linnaeus. Alnus incana is credited to Muenchhausen, perhaps 
from confusion of the abbreviation * Muench." with the name Moench. 
Quercus palustris is credited to DuRoi instead of Muenchhausen. 
Toaxylon pomiferum was never given valid publication by Rafines- 
que, and the adherents of the * American" Code would if consistent 
have to use the name Joxylon. The accent of scientific names is 
indicated by the use of grave and acute accents, as in Gray's Manual; 
but the following names of genera: Liriodendron, Robinia, Aesculus, 
Tilia, Nyssa, Diospyros; and of species: lucida (p. 39), heterophylla 
(pp. 47, 242), ovata (p. 62), fulva (p. 137), velutina (p. 127), Michauxii 
(p. 259), remain unmarked. An attempt has been made to indicate 
the etymology of generic names; but out of 49 genera only 22 are so 
explained, and some of these derivations are decidedly suspicious. 
The apparent relation between Populus and the Latin populus, the 
common people, is wholly deceptive, as also between Acer and acer, 
sharp. The attempt to show a “Celtic” origin for such classical 
Latin words as Salix, Quercus, Carpinus, Betula and Alnus seems to be 
