No. 1, Mat, 1921] MORPHOLOGY AND TAXONOMY, BRYOPHYTES 67 



characters drawn partly from the sporophyte and partly from the gametophyte. In the 

 larger divisions the sporophytic characters are emphasized; in the smaller divisions, the game- 

 tophytic. The class Musci is first divided into the 3 subclasses Sphagnales, Andreaeales, 

 and Bryales. The first 2 of these each include a single family, but the third is further divided 

 into the 3 groups (Reihengruppen) Eubryinales, Buxbaumiinales, and Polytrichinales. Of 

 these groups the first embraces the following orders (Reihen) :Fissidentales (1 family), Dicran- 

 ales (8 families), Pottiales (4 families), Grimmiales (1 family), Funariales (5 families), 

 Schistostegiales (1 family), Tetraphidales (1 family), Eubryales (16 families), Isobryales (21 

 families), Hookeriales (6 families) and Hypnobryales (12 families). The second group 

 embraces the orders Buxbaumiales and Diphysciales (1 family each), and the third group 

 the orders Dawsoniales and Polytrichales (1 family each). — A. W. Evans. 



449. Gargeanne, A. J. M. tJber Haplozia caespiticia Dum. Recueil Trav. Dot. N^er- 

 land. 17:205-217. 6 fig. 1920. — Haplozia caespiticia, a very rare species in the Nether- 

 lands, reaches its maximum development in late September and early October and is quickly 

 overgrown by other bryophytes. It contains the largest oil-bodies heretofore observed in 

 the Hepaticae. These are especially pronounced in the cells of the leaves, where they fre- 

 quently take up the entire width of the cell. They occur also in the protonema but are 

 minute or even lacking in the cells of the stem. Haplozia caespiticia is one of the very few 

 Jungermanniales which produce endogenous gemmae. These are borne in hundreds at the 

 apexes of the stem and also on the protonema; they are set free by the gelatinization of the 

 cell walls. When germinated on peat under glass the gemmae give rise to orthotropous shoots 

 with bilobed or even serrate leaves, instead of the roundish leaves normal to the species. — 

 J. C. Th. Uphof. 



450. Lesage, p. Contributions a I'etude de la germination des spores de mousses. 

 [Germination of moss spores.] Compt. Rend. Acad. Sci. Paris 166: 744-747. 1918. — See Bot. 

 Absts. 7, Entry 433. 



451. LoRCH, WiLHELM. Die Haube von Polytrichum formosum Hedw. [The calyptra of 

 Polytrichum formosum.] Hedwigia 61: 346-347. 1920.— The author shows that the opercu- 

 lum of Polytrichum formosum remains closely attached to the calyptra and that both organs 

 are thrown off simultaneously. He considers that the calyptra, thus acting as a sort of "flight 

 organ," plays an important part in the separation of the operculum, in addition to carrying 

 out its function of protecting the developing capsule. — A. W. Evans. 



452. Machado, A. Notes de bryologie portugaise. [Notes on Portuguese mosses.] Bull. 

 Soc. Portugaise Sci. Nat. 8: 43-45. 1918. — In the first part of the paper 4 mosses new to the 

 flora of Portugal are recorded, 1 species being described as new under the name Pottia Sam- 

 paiana. It approaches P. cavifolia, var. epilosa Schp. and was discovered by G. SampXio 

 in the province of Algarve. In the second part of the paper the opinion is advanced that 

 Hypnum lusitanicum Schp. represents an aberrant form of Rhynchostegium rusciforme Br. 

 & Schp. — A. W. Evans. 



453. Malta, N. Beitrage zur Moosflora des Gonvernements Pleskau mit besonderer 

 Beriicksichtigung des Kalksteingebietes der Welikajamiindung. [Contributions to the moss 

 flora of the Government Pskov, with special reference to the limestone region at the mouth of 

 the Velikaia River.] 78 p., 12 fig. Riga, 1919. — This report on the bryophytes of the Govern- 

 ment Pskov in western Russia is based on observations and collections made by the author 

 during the years 1916 and 1917. The species occurring on limestone, on sandstone, and on 

 clayey substrata are separately discussed, and the influences exerted on the bryophytic flora 

 by the physical and chemical factors of the soil are clearly indicated. In the enumeration of 

 species which concludes the work 35 hepatics, 15 peat mosses, and 206 mosses are listed with 

 definite data regarding stations. The only new species proposed is Bryum androgynum 

 Warnst., but a new var. pleskowiensis Malta is described under Seligeria recurvata. The 

 new species and the new variety are illustrated. — A. W. Evans. 



