328 TAXONOMY OF VASCULAR PLANTS [BoT. Absts., Vol. VII, 



Douglasii, and probably to be rather regarded as a distinct species. Four species native to 

 China and Japan are also described. A comparison is made as to difference in odor, minute 

 anatomy of the leaves, and composition of the oil distilled from the leaves. — J. C. Nelson. 



2231. Eydberg, Per Axel. Notes on Rosaceae — XII. Bull. Torrey Bot. Club 47: 45-67. 

 1920. — A discussion is given of the 33 species of roses of northeastern North America, with 

 key to groups and with notes on each species. These notes supplement the material given 

 by the same author in the "North American Flora." Nineteen hybrids are also reported. — 

 P. A. Mum. 



2232. Sargent, C. S. Notes on North American trees. VI. Jour. Arnold Arboretum 

 1 : 245-254. 1920. — Hamamelis macrophylla Pursh is taken up as a distinct species and the 

 following new species of Crataegus described or new names proposed, and some reduced to 

 varietal rank: Crataegus montivaga, C. Cocksii, C. meridionalis , C. noelensis, C. rufula, C. 

 drymophila, C. aestivalis var. maloides, C. aestivalis var. cerasoides, C. aestivalis var. cera- 

 soides f. luculenta, C. Holmesiana var. tardipes, C. pedicellata var. gloriosa. — Alfred Rehder. 



2233. ScHLECHTER, R. Die Columelliaceae. Notizbl. Bot. Gart. Berlin 7: 8-14. 1920.— 

 The family is best placed near the Gesneriaceae. An analytical key and descriptions are 

 given of the 6 species of Columellia, and a new species, C. Weberbaueri Schltr., is described 

 from Peru. — H. A. Gleason. 



2234. ScHLECHTER, R. Tetradcma Schltr., ein neues Genus der Gesneriaceen. [A new 

 genus of Gesneriaceae.] Notizbl. Bot. Gart. Berlin 7: 15-18. 1920. — The genus includes 

 four species of the Philippines, Borneo, Java, and Sumatra, hitherto placed in other related 

 genera. The following new combinations are made: Tetradema rubrum {Trichosporum rubi-um 

 Merr.), T. tuberculatum (Agalmyla tuberculata Hook, f.), T. asperifolium (Agalmyla asperi- 

 folia Bl.), T. praelongum (Dichrotrichum praelongum Kranzl.). — H. A. Gleason. 



2235. ScHLECHTER, R. Einc zweite Art der Gattung Androcorys Schltr. [A second 

 species of Androcorys Schltr.] Notizbl. Bot. Gart. Berlin 7:52, 53. 1920. — Herminium 

 gracile King & Pantl. is transferred as Androcorys gracilis (King & Pantl.) Schltr. — H. A. 

 Gleason. 



2236. ScHLECHTER, R. Orchidaceae novae, in caldariis Horti Dahlemensis cultae. II. 

 [New orchids cultivated in the warm-houses at Dahlem.] Notizbl. Bot. Gart. Berlin 7: 323- 

 330. 1919. — New species are described as follows: Cryptophoranthus similis , Stelis calotricha, 

 Octomeria Dusenii, O. irrorata, Bulbophyllum dahlemense, B. paranaense, Promenaea acumin- 

 ata, P. albescens, Capanemia paranaensis, Oncidium aberrans, Aerangis parvula, Angraecum 

 elephantinum. — H. A. Gleason. 



2237. Schmidt. Wilh. Dendrobium delicatum Bail. Orchis 14: 1-2. 1920.— Dendro- 

 bium delicatum Bail, occurs in nature on the rocky cliffs near Toowoomba, Queensland, in 

 company with D. Kingianum and D. speciosum var. Hillii. It is believed that D. delicatum 

 is a hybrid between these two. — E. B. Payson. 



2238. Schneider, Camillg. Notes on American willows. VII. Jour. Arnold Arbore- 

 tum 1: 147-171. 1920. — The present paper deals with the section Adenophyllae containing 

 8 and with the section Balsamiferae containing 2 species. As in the preceding papers of this 

 series keys to the species are given and each species is discussed in detail. The following 

 species, form and combination are new: Salix orestera, S. Eastwoodiae i. callicoma, S. glauco- 

 phylloides var. glaucophylla (Bebb). — Alfred Rehder. 



2239. Schneider, Camillg. Notes on American willows. VIII. Jour. Arnold Arbore- 

 tum. 1: 211-239. 1920. — This paper deals with the sections Chrysantheae (8 species), Can- 

 didae (1 species) and with Salix Wolfii. As in the preceding papers of this series keys to the 

 species are given and each species is discussed in detail. The following varieties are new: 

 Salix Hookeriana var. tomentosa and S alaxensis var. longistylis (Rydb.) — Alfred Rehder. 



