276 MORPHOLOGY AND TAXONOMY, BRYOPHYTES [Bot. Absts., Vol. VI, 



niinal portions of the scale bundles and the sporophyll bundles, where they may be mesarch; 

 and in the latter show indications of occasional exarch structure, the terminal portion of 

 these bundles also being concentric. — A. W. Dupler. 



1899. Harlan, Harry V. Daily development of kernels of Hannchen barley from flower- 

 ing to maturity at Aberdeen, Idaho. Jour. Agric. Res. 19 : 393-429. PI. 83-91, 17 jig. 1920. 



1900. Henry, Augustine, and Margaret G. Flood. The Douglas Firs: a botanical 

 and silvicultural study of the various species of Pseudotsuga. Proc. Roy. Irish Acad. B, 35: 

 67-90. PL 12-14. 1920.— See Bot. Absts. 6, Entry 1544. 



1901. Lecomte, Henri. Sur la "structure etagee" de certains bois. [On the "storied 

 structure" of certain woods.] Compt. Rend. Acad. Sci. Paris 170: 705-709. 1920. — The author 

 contends that it is preferable to restrict the term "storied wood" to cases in which the 

 wood rays are of about equal depth and in tangential section appear arranged in successive 

 layers as are the windows of most buildings. To instances where there are rays of two sizes, 

 only one of which is so arranged, he applies the term "semi-storied." He does not believe 

 the word "storied" should be used as referring to the wood elements. Nine species of legumes 

 and representatives of other families are listed as having storied wood-structure. — C. H. and 

 W. K. Farr. 



1902. Morvillez, F. L'appareil conducteur foliaire des Hamamelidacees et des formes 

 voisines. [The foliar conductive system of the Hamamelidaceae and related forms.] Compt. 

 Rend. Acad. Sci. Paris 169: 542-545. 10 fig. 1919. — Descriptions and drawings are presented 

 of the foliar vascular apparatus of Hamamelis virginiana L; Parrotia persica D. C. ; Folhergilla 

 alnifolia L., Disanthus cercidifolia Max; Bucklandia populnata D. C; Liquidambar styraci- 

 flua L. ; Altingia chinensis Hook; Platanus orientalis L. ; Liquidambar imberbe Ait., Eriobotrya 

 japonica Lindl. and Holodiscus discolor Maxim. On the basis of these studies, the author has 

 worked out a system of relationships among the groups of plants represented by the above 

 species. — V. H. Young. 



1903. Morvillez, F. L'appareil liberoligneux foliaire des Betulacees, Corylacees et 

 Castaneacees. [The vascular anatomy of the leaves of the Betulaceae, Corylaceae, and Casta- 

 neaceae.] Compt. Rend. Acad. Sci. Paris 170:674-677. 12 fig. 1920. — These families are 

 found to differ in their foliar vascular anatomy in very much the same way as do the Chryso- 

 balaneae and the Leguminoseae; namely, in the number and development of the projecting 

 portions of the vascular ring at the distal end of the petiole. These lateral projections are 

 held to be of significance as a family characteristic. — C. H. and W. K. Farr. 



1904. Schellenberg, G. Ueber einige Arten der Gattung Rourea Aubl. [Several species 

 of the genus Rourea Aubl.] Bot. Jahrb. 56 (Beiheft) : 21-29. 1920. 



1905. Watson, E. E. On the occurrence of root-hairs on old roots of Helianthus rigidus. 

 Michigan Acad. Sci. Ann. Rept. 21: 235. 1919. — Root hairs were formed on roots occurring 

 in the neighborhood of a bud at the end of a rhizome. These roots are one or two decimeters 

 long. Root hairs occur throughout the entire length. They are 0.5 mm. or more long, non- 

 septate, and frequently branched, always dichotomously. Each comes from a small wedge- 

 shaped epidermal cell. — Richard de Zeeuw. 



MORPHOLOGY AND TAXONOMY OF BRYOPHYTES 



Alexander W. Evans, Editor 



1006. Brotherus, V. F. Musci Weberbaueriani. Bot. Jahrb. 56 (Beibl. 123): 1-22. 

 1920. — Previous collections of the moss flora of Peru have not been very extensive or very 

 numerous. The principal ones are those of A. Mathews, R. Spruce, and E. Ule, with scat- 

 tered records from other collectors. The present report is based on the collection made 



