June, 1920] TAXONOMY, VASC. PLANTS 439 



reticulata, A. reticulata var. glabra, A. rvbescetu, A. Ledernumnii, A. caulijlura, A. ciupidata, 

 Ilalfordia papuana, Ilormopctulum i/rarile, II. Wernerl, II. Pullet, Clausenia papuana, 

 Luvunga papuana, Citrus paludosa, Hunsteinia n. gen., and //. jmpuana. — J. M. Greenman. 



2995. MAIDEN, J. II. A critical revision of the genus Eucalyptus. Vol. IV, Part 8. 

 P. 201-237, 4 pi. William Applegate Gulliek: Sydney, 1919. -The pre ent part contains 

 descriptions and critical notes on the following species: Eucalyptus reasellaria F.v.M., E. 

 Spenceriana Maiden, E. Cliftoniana Fitzgerald n. sp., E. setosa and E. ferruginea Schauer, 



E, Moorei Maiden it Cainbage, E. dm/iosa A. Cunn., E. lorquata Luelunann, E. amygdalina 

 Labill., E. radiata Sieber, E. numerosa Maiden, and E. nitida Hook. f. The first four species 

 enumerated are copiously illustrated. [See also Hot. Absts. 2, Entries 359 and 1355.] — 

 J . M. Greenman. 



2990. MARSHALL, E. S. Notes on Somerset plants for 1918. Jour. Hotany 57: 175-181. 

 1919. [Concluded from Ibid. 57: 154.] — Notes are given on the distribution and structural 

 character of plants in the families from the Solanaceae to the Lycopodiaceae and Characeae 

 (Henthamian system.) — K. M. Wiegand. 



2997. Maksh all, E. S. Barbarea rivularis in England. Jour. Botany 57:211-212. 

 1919. — Plants collected by W. D. Miller in Somerset County had very small pale yellow 

 flowers and crowded erect pods. These were formerly identified as B. stricta, a plant clearly 

 distinct from B. vulgaris. A study of Rouy and Foucaud's "Flora de France" showed that 

 the proper name of this plant is B. rivularis Martrin-Donas (= B. stricta Boreau, non Andrz. 

 nee. Fries.). Syme's figure and Babington's description indicate the typical form of this 

 species, while the material cited above is var. longisiliquosa Carion. Marks of distinction 

 between B. stricta and B. rivularis are noted. — K. M. Wiegand. 



2998. Mass along a, C. Di alcune Podostemacee del Brasile. [The Podostemonaceae of 

 Brazil.] Bull. Soc. Bot. Ital. 1918: 42-44. 4 fig. 1918.— The author records four species of 

 Apinagia and one of Mniopsis from Brazil. — J. M. Greenman. 



2999. Meyer, Rud. Echinocereen. [Forms of Echinocerus.] Monatsschr. Kakteen- 

 kunde 29: 14-18. 1 pi. 1919. — Notes are given on the species shown in the plate entitled 

 Echinocereen Gruppe. — A. S. Hitchcock. 



3000. Millspaugh, Charles Frederick, and Earl Edward Sherfp. Revision of the 

 North American species of Xanthium. Field Mus. Nat. Hist. Publ. Bot. Ser. 4:9-51. PI. 

 7-18. 1919. — Twenty-one species of Xanthium are found in North America. Of these, 4 are 

 distinctly new species {Xanthium australe from Mexico, X. calvum from California, X. 

 cenchroides from Texas, X. curvescens from Vermont) and one other (Xanthium globosum 

 Shull from Kansas and Missouri) is described for the first time in accordance with the Vienna 

 Code. Two of the common species, Xanthium commune Britt. and X. canadense of American 

 authors (not Mill.), are seen to be X. italicum Mor. and X. ckinense Mill, respectively. The 

 Old World X. strumarium L. occurs very rarely in North America (Massachusetts and Cali- 

 fornia) and the European A', orientale L. is not found here at all. X. riparium Lasch of 

 Europe is seen to differ specifically from X. echinatum Murr. of North America. X.bubalo- 

 carpon Bush is identical with X. speciosum Kearn. and X. silphiifolium Greene likewise 

 equals A', oviforme Wallr. A number of additional less well known "species" are merely forms 

 or unstable varieties of older species and hence are reduced to synonymy. The fruiting 

 involucres of each species are illustrated both by photographs and by drawings. Photo- 

 graphs of the type sheets of A', curvescens, X. calvum and A r . australe are presented in full- 

 page plates. — Earl E. Sherff. 



3001. Moore, Spencer Le M. Alabastra diversa. Part XXX. 1 Plantae Rogersianae. 

 IV. Jour. Botany 57: 86-91. 1919 (cont. from Ibid. 56: 212. 191S.)— A further installment of 

 notices concerning, and descriptions of Archdeacon Roger's African Plants, chiefly from 



