66 MORPHOLOGY AND TAXONOMY, BRYOPHYTES [BoT. Absts., Vol. VIII, 



during the development of the seed. In the Lythraceae, however, it remains. The cuticle 

 between the 2 integuments and that between the seed-coat and the nucellus remain intact in 

 both species. In the chalaza cork tissue is developed, which connects with the inner cuticle 

 between the seed-coat and the nucellus. At times layers of the seed-coat develop into 

 cork cells. — H. Engelhardt. 



445. WissELiNGH, C. VAN. Bijdragen tot de Kennis van de Zaadhuid. Zevende bijdrage: 

 Over de Zaadhuid van Tropaeoliun majus L. (Tropaeolaceeen), Hypericum qimdrangulum L. 

 (Hypericaceeen) en Ipomoea purpurea Roth (Convolvulaceeen). [Contributions to a knowledge 

 of the seed coat. Seventh contribution : The seed coat of Tropaeolum majus L. (Tropaeolaceae) , 

 Hypericum quadrangulum L. (Hypericaceae) and Ipomoea purpurea Roth (Convolvulaceae).] 

 Pharm. Weekblad 57: 575-583, 605-614. PI. 2, 12 fig. 1920.— A survey of our knowledge, and 

 particularly of the work of K atser, as to the morphological character of the seed coats in these 

 3 species. The presence in the young integument of cuticles which later disappear during the 

 development of the ovule into the seed; and the history of the chalazal tissue, are especially 

 studied. The author concludes that the chalaza should be regarded as a part of the seed 

 coat. — H. Engelhardt. 



MORPHOLOGY AND TAXONOMY OF ALGAE 



E. N. Transeaxj, Editor 

 (See in this issue Entries 99, 103, 687) 



MORPHOLOGY AND TAXONOMY OF BRYOPHYTES 



Alexander W. Evans, Editor 



(See also in this issue Entries 118, 123, 130, 133, 134, 142, 687) 



446. Campbell, D. H. Studies in some East Indian Hepaticae. Calobryum Blumei, N. ab 

 E. Ann. Botany 34: 1-12. PI. 1, 6 fig. 1920. — Calobryum differs in several important 

 particulars from the Jungermanniales, with which it is usually associated. The early stages 

 of the antheridium and archegonium are very similar, supporting Goebel's theory of the 

 close homologies of these organs. There is, however, considerable variation shown, espe- 

 cially by the antheridium. The genus is acrogynous, i.e., the apical cell finally becomes 

 transformed into an archegonium. This organ has only 4 rows of peripheral neck-cells, and a 

 cap-cell may be wanting. The sporophyte differs from that of the typical Jungermanniales 

 in having but 1 layer of wall cells, thus more nearly resembling the Sphaerocarpales or Mar- 

 chantiales. The family Calobryaceae is well founded, and perhaps a distinct order Calo- 

 bryales ought to be established. — D. H. Campbell. 



447. Fleischer, Max. Kritische Revision von Carl Miillerschen Laubmoosgattungen. 

 [Critical revision of Carl Miiller's genera of mosses.] Hedwigia 61:402-408. 1920. — This 

 paper (which is to be continued) forms a part of a series in which the specimens contained 

 in the herbarium of C. Muller (of Halle) are critically discussed. It consists mostly of 

 names arranged in 2 parallel columns, the first giving Miiller's determinations and the 

 second those of the author. Determinations which required neither revision nor transfer- 

 ence to other genera are mostly omitted. The following genera, as understood by Muller, 

 are taken up: Braunia, Harrisonia, Hedwigia, Cyrtopus, Bescherellia, Spiridens, Trachypus, 

 Myrinia, Mollirete, Eriodon, Dimerodontium, Rozea, Habrodon, Fabronia, Helicodontium, 

 and Schwetschkea. Several of Muller's species are reduced to synonymy, and many new 

 combinations are necessitated through the transference of species. — A. W. Evans. 



448. Fleischer, Max. Natiirliches System der Laubmoose. [Natural classification of 

 the mosses.] Hedwigia 61: 390-400. 1920. — The classification here proposed is based on 



