No. 3, April, 1921] TAXONOMY OF VASCULAR PLANTS 327 



are of oceanic and 9 of Asiatic distribution. The discussion of the geographical distribution 

 is very extended. A special discussion of the genus Majidea Kirk is appended. Keys are 

 given to the genera, and under each genus to the species. Nomenclatorial references, synon- 

 omy, and notes on distribution and structure are given under the species. The following new 

 forms, species, and combinations are proposed: Aphania diciyophylla (Cupaniopsis dictyo- 

 phylla Radlk.), Lepisanthes membranijolia (Erioglossum membranifolia Radlk.), Guioa sub- 

 sericea, G. dasyantha, G. pauciflora, Cupaniopsis grosseserrata, G. hrachylhyrsa, G. multidens, 

 C. oxypetala, C. atrotheca, C. gigantophylla, C. flaccida, Rhysotoechia elongata, Dictyoneura 

 subhir&uta, D. microcarpa, Euphorianthus pallidus, Sarcopteryx rigida, Jagera serrata forma 

 genuina and iorva&fulvinervis, J. macrophylla, Arytera densiflora, A. sordida, A. xanthoneura, 

 Mischocarpus retusus, M. largifolius, Harpullia reticulata, H. largifolia, H. obscura, and H. 

 petiolaris. — K. M. Wiegand. 



2226. Rehder, Alfred. The American and Asiatic species of Sassafras. Jour. Arnold 

 Arboretum 1 : 242-245. 1920. — The taxonomic value of some of the characters used in the 

 separation of genera in Lauraceae is discussed and a revised generic description of Sassafras 

 given to include the two Asiatic species. Sassafras randaiense {Lindera randaiensis Hayata) 

 appears as a new combination. — Alfred Rehder. 



2227. Rehder, Alfred. New species, varieties and combinations from the herbarium 

 and collections of the Arnold Arboretum. Jour. Arnold Arboretum 1 : 254-263. 1920. — The 

 present continuation of this paper deals chiefly with Rosaceae and a few Saxifragaceae and 

 Hamamelidaceae. Besides some new horticultural forms the following new species, new varie- 

 ties, and new combinations appear: Ribes Ruizii, Parrotiopsis Jacguemontiana (Decne.), 

 Hamamelis vernalis f. tomentella, Physocarpus australis (Rydb.), P. stellatus (Rydb.), Neillia 

 longer acemosa war . lobata, N. sparsiflora, Spiraea prunifolia var. hupehensis (Rehd.), S. Scho- 

 chiana and S. Teniana, both from China, S. virginiana var. serrulata, Holodiscus franciscanus 

 (Rydb.), Pyracantha discolor, P. Koidzumii (Hayata), Crataegomespilus Gillotii (G. Beck), 

 and Sorbus Harrowwiana (Balfour). — Alfred Rehder. 



2228. Ridley, H. N. New and rare species of Malayan plants. Jour. Straits Branch Roy. 

 Asiatic Soc. 82: 167-204. 1920. — An account of some novelties collected of recent years 

 together with various corrections and emendations of the Malayan flora based on an exami- 

 nation of types at Kew and the British Museum. Seventy-six new species are described and 

 3 new genera, the latter being Peniculifera (Sterculiaceae), Leptonychiopsis (Sterculiaceae) 

 and Napeodendron (Sapindaceae). — T. F. Chipp. 



2229. Rock, Joseph F. The leguminous plants of Hawaii. Experiment Station of the 

 Hawaiian Sugar Planters' Association. Roy. 8vo, 334 p-,93 pi. Honolulu, July, 1920. — 

 The 200 species included in this paper belong to 71 genera and are either native to the islands, 

 have become well established there, or give promise of becoming permanent inhabitants. 

 The percentage of indigenous species is exceedingly small. Keys to the genera and species 

 are given as well as specific descriptions, synonyms, and notes regarding economic import- 

 ance and local occurrence. The following new varieties are described and new combinations 

 made: Erythrina fusca Lour. var. inermis, Mucuna pachylobia {Stizolobium pachylobium 

 Piper & Tracy), Dioclea altissima (Dolichos altissimus Velloso), Vigna sandwicensis A. Gray 

 var. heterophylla. — E. B. Payson. 



2230. Rtdberg, P. A. Henry and Flood's the Douglas fir. [Rev. of: Henry, Augus- 

 tine, and Margaret G.. Flood. The Douglas firs: a botanical and silvicultural study of the 

 various species of Pseudotsuga. Proc. Roy. Irish Acad. B. 35:67-92. PI. 12-14- May, 

 1920. See Bot. Absts. 4, Entry 1544.] Torreya 20: 102-104. 1920.— Three species and 

 one variety of Pseudotsuga native to North America are admitted, viz : P. Douglasii Carri^re 

 from the Pacific Coast region and the var. caesia Schwerin from the northern Rocky Moun- 

 tains; P. glauca Mayr. from the Rocky Mountains; and P. macrocarpa Mayr. from Southern 

 California. The reviewer considers the var. caesia as more related to P. glauca than to P. 



