(52) 
Dixon, H. N, Camptothecium nitens var. falcatum (Peck) Burnham. (Ibidem p: 92.) 
— Rhaphidostegium caespitosum (Sw.) and its Affinities. (Journ. of Bot. LVIII 
[1920], p. 81-—89.) 
Douin, C, Les variations du gametophyte chez les Cephaloziellacees. (Rev. gener. 
de Bot. XXVIII [1916], p. 251—256; 257—288, Pl. XL-XV; p- 300—320, Pl. 
XVI—XIX; p. 329—352.) 
— Le capitule du Marchantia beiytkorihs expliqu& par Leitgeb et ses disciples. 
(Rev. gener. Bot. XXXIH [1920], p- 57—71.) 
Dunham, Elizabeth Marie. How to know the mosses, a popular guide to the mosses 
of the north-eastern United States. (Boston 1916, XXV u. 287 pp., 8°.) 
—- How to know the mosses without the Aid of a Lens. (The Bryologist XIX [1916], 
p. 19-23.) 
—— Fungus-Spores in a Moss-Capsule. (The Bryologist XIX [1916], p. 89--90.) 
— Unusual Habitats. (Ibidem XX [1917], p. 98—99.) 
> Mounting mosses for exhibition purposes. (The Bryologist XXIII [1920], p. 6.) 
Durand, Elias J. Encalypta laciniata in Central New York. (The Bryologist XXII 
[1919], p. 13.) 
. Dutton, D. Lewis. Buxbaumia indusiata Brid., from Brandon, Vermont. (The Bryo- 
logist XXIV (1921, p. 8.) 
Emig, W. H. Mosses as Rock Builders. (The Bryologist XXI [19181], p. 25-27, Pl. 
AV—XVL) 
— Octodiceras Julianum Brid. var. ohioense, new variety. (Ibidem p. 60-61.) 
Evans, Alexander W. Abruzzi Hepaticae. (Revue Bryologique XLVII [1920], 
P- 57—58.) : 
—— Report on the Hepaticae of Alaska. (Bull. Torr.Bot. Club XL1[1915), p. 577-616, 
Pl. XX1.) 
—- Additions to the Hepatic Flora of Quebec. (The Bryologist XIX [1916], p. 27—30.) 
‚ ——- Notes on North American Hepaticae. VII. (Ibidem XX [1917], p. 17-—28, Pl. Il.) 
—— Notes on North American Hepaticae. VIII. (The Bryologist XXII[1919), p.54—72, 
Pl. 11, 15 Textfig.) Neue Combinationen: Nardia rubra (Gottsche), Evans — 
Jungermannia rubra (Gottsche) und Porella Cordaeana (Hüben.), Evans— 
Jungermannia Cordaeana (Hüben.). 
 —— Three South American species of Asterella. (Bull. Torr. Bot. Club XLVI [1919], 
p: 469-480.) —- (Contrib. Osborn Bot. Laborat. Yale University 1919, No. 11.) 
—— The North. American Species of Asterella. (Contr. U. S. Nat. Herb. Washington 
XX, Part. 8 [1920], p. 247—-312.) 
.  Fruetuoso, Gonzalo y Tristancho,  Excursiones briolögicas por la Provincia de Bada- 
; joz. (Trab. Mus. Nac, Cienc. Naturales Madrid. — Serie Botanica, No. 6 [1914], 
A6pp.) 
 Frye, T. C. Illustrated Key to the Western Ditrichaceae. (The Bryologist XX [1917], 
pP: 49-60, Pl. IV—XIX.) 
— The Rhacomitriums of Western North-America. (The Bryologist XX [1917], 
p- 91—98, Pl. X<X—XXII; Vol. XXI [1918], p- 1—16, Pl. I-XIV.)- 
ag Illustrated Key to the Western hessen (Ibidem XXI | p- 37-48, 
sBpE XVIL-XXIIL) - 
— Notes on useful and harmfal» mosses. (The Bryologist XXIII [1920}, p. 71.) 
Gaisberg, E. v. Beiträge zur Kenntnis der Lebermoosgattung Riccia. (Flora N. F. 
ie ‚XIV [1921, p. 262—277.) ER, 
'Garjeanne, A. 5. M. Über Haplozia arte Dum. (Recueil trav. bot. neerl. Soe. 
bot. neerl. ei ee p- 205-217, 6 Fig.) 
