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Hauman-Merck, L. Les Parasites vegetaux des plantes cultivees en Argentine et 
dans les regions limitrophes. — Lichenes. (Anales Mus. Nac. Hist. Nat. Buenos- 
Aires XXVI [1915], p. 163 ff.) 
Herre, A. C. Preliminary Notes on the Lichens of Whatcom County, Washington. 
(The Bryologist XX [1917], p. 76—84, 1 Fig.) 
— Notes on Mexican Lichens. (The Bryologist XXIII [19207, p. 3—4.) 
— Hints for Lichen Studies. (Ibidem p. 26—27.) 
— Alaskan Notes. (Ibidem p. 37—38.) 
Howe, R.H. An interesting tropical lichen new to the United States. (Torreya XVI 
[1916], p. 50, 26 Fig.) 
— A further note on the lichens of Nantucket. (Rhodora XX [1918], p. 40.) 
Lettau, G. Nachträge zur Lichenentlora von Ost- und Westpreußen. (Schriften d. 
'  Physikaı.-Ökonom.-Ges. Königsberg i. P. LX [1919], 19%0, p. 5—21.) 
Linkola, K. Einige bemerkenswerte Flechtenfunde aus Süd- und Mittelfinnland. 
(Medded. Soc. Faun. Flör. Fenn. XLV [1918—1919], p. 92--98.) 
— Kulturen mit Nostoc-Gonidien der Peltigera-Arten. (Annales Societatis Zoolog. — 
Botanicae Fennicae Vanamo Tom. I [Helsinski 1920], p- 1—23, 1 Tafel, 7 Abb.) 
Longman, H. A, and White, C. T. The Flora of a Single Tree. -— Lichenes (deter- 
mined by Mr. E. Cheel). — (Proceed. Roy. Soc. Queens. XXIX, No. 6 [1917], 
p. 68—69.) 
Mac Caughey, V. Lichen flora of the Hawaiian Islands. (Hawaiian Forester. XIV 
{1917], p. 303-304.) 
. Mameli, Eva, Ricerche fisiologiche sui Licheni. I. Idrati di Carbonio. (Atti Istist. 
Bot. R. Univ. Pavia e Laborat. crittog. ital. XVII [1920], p. 147—157.) 
— Licheni della Sardegna. — Primo contributo. (Ibidem p. 159-173.) 
 — Licheni della Cirenaica. — Secondo contributo. (Ibidem p. 175-183.) 
Merrill, Dudley. Lichens of the Mt. Monadnock Region, N. H. — No. 12. (The 
Bryologist XXIII [1920], p. 78.) 
Moxley, G. L. Additions to the lichen flora of southern California. (Bull. So. Calif. 
Acad. Sci. XVII [1918], p- 61—62.) 
“litt, Charles C. A short history of Lichenology. (The Bryologist XXII [1919], 
pP- 77—85.) 
Riddle, Lincoin W. ‘The genus Parmeliopsis of Nylander. (The Bryologist XX [1917], 
pP. 69—76, Pl. XX, 2 Fig.) Als neue Combinationen werden aufgeführt: Parme- 
liopsis aleurites var. diffusa (Ach.) Riddle und P. diffuca (Weber) Riddle. ; 
— Some noteworthy lichens from Jamaica. (Bull. :Torrey Bot. Club XLIV [1917], 
p. 321-330, Pl. XXI.) 
* — Pyrenothrix nigra, gen. et sp. nov. (Bot. Gazette LXIV [1917], p. 513—515, 
with 4 Fig.) 
— Lichens. In Britton, N. L. Flora of Bermuda [1918]. p. 470—479. 
— Two Publications on Tropical American Lichens. (The Ba yobogint HARHEL [19201, 
 ...P- 60-61.) ‘ 
"Smith, A. Lorrain and nalen J. Is Pelvetia canaliculata « a Lichen ? (New 
... Phytologist X1V [1915], p. 295—298.) 
i Btainer, J. Aufzählung der von J. Bornmüller im Oriente gesammelten ‚Flechten. 
(Ann. K. K. Naturhist. Hofmus. Wien XXX [1916], p. 24—39.) s 
ir Aa; J. Rinodina oreina var. mougeotioides, (Nyl.) Zahlbr. na Morav&. (Sbornik 
klübu Prerodo vödeckeho V; Brne. za obdobi. IE 19. RE U. Brünn 1919, 
SPP) 
