No. 1, Mat, 1921] TAXONOMY OF VASCULAH PLANTS 105 



719. Denslow, H. M. Further reflections of an orchid-hunter. Jour. New York Bot. 

 Gard. 21: 145-156. 1920. — The orchid flora even of the eastern states is not yet well known 

 and much more information is needed on the life histories of various species. Herbaria do not 

 contain suflBcient specimens to indicate geographical distribution accurately. Field work on 

 orchids must be prosecuted promptly and actively, since the orchid flora is rapidly disap- 

 pearing. — H^ A. Gleason. 



720. Engler, Adolph, tjnd Ernst Gilg. Syllabus der Pflanzenfamilien. [Syllabus of 

 the fsonilies of plants.] 8vo, 8th ed., 395 p., 457 fig. Gebrtider Borntraeger: Berlin, 1919.— 

 A comprehensive and epitomized survey of the families of plants from and including the 

 Schizomycetes (Bacteria) to the Compositae of the Dicotyledons. There is included also a 

 brief classification of vegetation from a geographical standpoint. Very few and but minor 

 changes are made from the arrangement given in the seventh edition of this work. — E. B. 

 Payson. 



721. Fernald, M. L. Gaultheria procumbens L., forma suborbiculata, n. f. Rhodora 

 22: 155-156. 1920. — An e.xtreme form with strikingly large round leaves, collected in Har- 

 wichport, Harwich, Massachusetts. — James P. Poole. 



722. Fernald, M. L. Lactuca hirsuta Muhl., forma calvifolia, n. f. Rhodora 22: 156. 

 1920. — This new form differs from the typical L. hirsuta in the leaves being glabrous beneath 

 and in some specimens extremely thin and membranous. — James P. Poole. 



723. Hamet, Raymond. Sur un nouveau Sedum chinois de I'herbier du Museiun d'His- 

 toire Naturelle de Paris. [A new Sedum from China.] Bull. Soc. Bot. Geneve 11: 146-150. 

 1919.— The new species, Sedum Pinoyi Hamet, is compared with other species of Sedum 

 which are closely related to it. — W. H. Emig. 



724. Hitchcock, A. S. Revisions of North American grasses: Isachne, Oplismenus, 

 Echinochloa, and Chaetochloa. Contrib. U. S. Nation. Herb. 22: 11^208. PI. 25-82, fig. 

 21-62. 1920.— Four papers are presented under this title. In the first, eight species of 

 Isachne are described, each illustrated by a plate. In the second, four species of Oplismenus 

 are described and figured. In the third paper, seven species of Echinochloa, one form of 

 which has been cultivated in the United States under the names "billion dollar grass" and 

 "Japanese barnyard millet," are described and figured. Several varieties of E. crusgalli 

 are recognized and illustrated, and the following new names occur: Echinochloa polyatachya 

 (HBK) Hitchc, E. opUsmenoides (Fourn.) Hitchc, and E. crusgalli crus-pavonis (HBK.) 

 Hitchc. In the fourth paper, twenty-six species of Chaetochloa, more widely known as 

 Setaria, are described, and all, with the exception of C. ambigua, are represented by figures. 

 The following new names occur: Chaetochloa Poiretiana (Schult.) Hitchc, C. palmifolia 

 (Willd.) Hitchc. & Chase, C. tenax (L. Rich.) Hitchc, and C. Scheelei (Steud.) Hitchc The 

 treatment in each paper consists of a short introduction, a description of the genus with its 

 synonyms, and a key to the species. Under each species the synonymy is given, in some 

 cases very extensive, followed by the description and the citation of specimens.— 5. F. Blake. 



725. Ladbrook, James. A new species of Coupoui. Jour. Botany 58: 176-177. 1920.— 

 This new species, C. micrantha, was found in the British Museum herbarium among unnamed 

 bpecimens of Tabernaemontana, and was collected by Martin in Guiana. This species adds a 

 fourth to the three included in Wernham's account of Coupoui in Jour. Botany 58: 105-108. 

 1920.— iiC. M. Wiegand. 



726. LiNDAXj, G. Acanthaceae africanae. X. [Acanthaceae of Africa. X.] Bot. Jahrb. 

 57:20-24. 1920. — Eight species, in seven genera, are discussed, all new to science: Hygro- 

 phila kyimbilensis (N. Nyassaland), Mellera menthiodora (interior Africa), Pseudobarleria 

 glandulifera (Southwest Africa), Dyschoriste albiflora (N. Nyassaland), Barleria (Eubarleria) 

 albida (N. Hereroland), Asystasia leptostachya (Kamerun), A. glandulifera (Kamerun), and 

 Anisotes ukambanensis (Massai Steppes). — K. M. Wiegand. 



