38. Ceratodon purpureus Brid* Weinm* Petrop* 18^7, 
p. 114, no. 13. Syll. 1845, p. 52, no. 1. Dtcramim purpureum 
Hedw. Irin, et Libosch. mousseSj p. 8, no. 81 Mntum 
purpureum Sob. Petrop. 1799, p 250, no. 696, ed. ross. 11^ 
1802, p. 289, no. 7U; Georgi 1790, p. 522, no. 664. 
übique vulgatissimus et valde polymorphus. Medio 
Martio jam setas protrudit; fructus maturat a medio Majo 
ad med. Junii. 
59. Ceratodon cyltndrtcusHüheTi.W e\nm, Syll.1 845, p.52, 
no. 2. TrichosL cylindrtcumW e'inm. Petrop. 1837, p. 114, 
no. 80. 
Ad fossas argillosas pr.PawIowsk, Oranienbaum, Nikols^ 
koje ad Tosnamj et in terra nuda carbonata sylvarum pr. 
Druznaja Gorka. Medio Majo et sec. cel. >Yeinmann etiam 
aestate. 
TRICHOSTOMAGEAE. 
40. Anacaiypta recurvirostra ßryol. Germ. Weisstä curvi- 
rostra Weinm. Petrop. 1837, p. III, no 58. Anac, rubelta 
Weinm. Syll. 1845, p. 23, no. 1. 
In turfosis v. g. circa Gatczinarn, ad m. Duderhof etc. 
Vulgatissima in borto Pawlowsk, ubi ad truncos, saxa et 
terram per totum annum fructificat. 
(41.) Desmatodon tatifolius Brid. 
In rupibus arenaceis prope Jamburg, med. Julio. 
Obs. Spp.ingrica ab icone ßryol. Eur. recedunt foliis ob- 
tusis vel acutiusculis tantum, operculo acutiusculo, nec 
obtuso et peristomii fugacissimi dentibus ad membra- 
nam basilarem usque fissis irregularibus, nec cruri- 
bus ante membranam connatis. Forsari species pro- 
pria nomine D. arc/ianV salutanda, sed ob insufficien- 
tem specc. copiam vix stabilienda erat. 
42. Trichostomum tortile Schrad. Weinm. Petrop. 1837, 
p. 114, no. 81; Syll. 1845, p. 56, no. 3. 
In arenosis humidiusculis pr. Pawlowsk, in argillosi« 
Beitr. t. Pflanrenk. X. 2 
