— 7 — 
REVIEW OF DR. WARNSTORF’S PAPER ON EUROPEAN H ARPIDIA. 
John M. Holzinger. 
This paper is published in the Beiheft zum Botanischen Centralblatt, 
Band XIII, Heft 4, 1903. It is accompanied by two plates. 
In dealing with the literature of the group the author naturally reviews 
the work of previous authors who have made it a specialty. Carl Mueller 
was the first to treat this as a subsection of Hypnum, under the name of 
Drepanoclo.dus (1851). In 1856 Sullivant gave the name Harpidium to 
essentially the same group, with some omissions, and for forty years Sulli- 
vant’s name has been in use, in spite of the priority of Mueller’s name. 
Since 1885, however, there has been established a genus of lichens, Harpi- 
dium Korben. So that now a double ground exists for holding to Mueller’s 
older Drepanocladus. Limpricht, in his Laubmoose, has reinstated the 
name, and Warnstorf very properly has taken like ground. 
The authors most interested in this group were Schimper (1876), Sanio 
(1891), Renauld (1890), v. Klingraeff (1893), and Limpricht (1900). The least 
practical, most mechanical treatment appears to have been that of Sanio. 
Both Renauld and Limpricht are far more logical in disposing of the multi- 
tude of forms in this polymorphic group, A number of species retained by 
them are however reduced by Warnstorf, and his discussion of these species 
is quite instructive. 
Following is his synopsis of European species of Drepanocladus-. 
I. INTEGROFOLIA — 
A. Group Kneiffii: 
D. Kneiffii (Sch.) 
D. polycarpus (Bland). 
D. pseudofluitans (Sanio). 
D, simplicissimus (W. Warnst.) 
B. Group Aduncus: 
Crassicostata— 
D. capillifolius (Warnst.) 
D. aduncus (Hedw.) 
D. Sendtneri (Sch.) 
• Tenuicostata. 
D. lycopodioides (Schwaegr.) 
D. latifolius (Lindb. & Arnell). 
D. brevifolius (Lindb.) 
D. subaduncus (Warnst.) 
C. Group Intermedius: 
D. vernicosus (Lindb.) 
D. intermedius (Lindb.) 
D. revolvens (Sw.) 
D. latinervus (Arnell). 
