216 TAXONOMY OF VASCULAR PLANTS [Bot. Absts., Vol. VII, 



with an illuminating half-natural-size photograph or sketch of a representative species under 

 each genus, should enable the amateur botanist readily to fix in his mind the generic char- 

 acteristics, and, indeed, the species typifying the genus. A brief of the publication of each 

 generic name is given, and the reason is stated for choosing the species taken as a type. 

 The arrangement of the material, in general, differs from that of previous contributions on 

 the subject in that the tribes have been placed in a new sequence, based upon the complicity 

 of the flower structure, the simplest or most primitive being placed first and the most highly 

 developed being given last. According to the author's researches, the tribal arrangement as 

 presented is the closest approximation to the natural relationship that can be shown in 

 sequence. Accordingly, the bamboos (Bamboseae) are listed first, as certain genera embraced 

 in this tribe are of the simplest floral structure. The following points are of special interest to 

 agrostologists: Munroa has been placed under the tribe Chlorideae. Triodia has been re- 

 stored ; and while the species embraced in this genus are variable in habit and in floral char- 

 acter, the author does not deem it practicable to segregate any of them into distinct genera. 

 Aira has been restored and Deschampsia relegated to synonomy under it. Aspris is used for 

 three annual economically unimportant species heretofore carried under Aira. Agrostis 

 palustris is the name given for A. alba, cultivated redtop. Agrostis capillaris replaces 

 what has been considered a variety of cultivated redtop, A. alba vulgaris. The synonomy is 

 com-plete for generic names based on American species. The lifelike sketches of representa- 

 tive species by Mrs. Gill and the detailed taxonomic drawings by Assistant Agrostologist, 

 Mrs. Agnes Chase, practically all of which are new, are exceedingly helpful in the recognition 

 of the species typifying each genus.— Arthur W. Sampson. 



1450. HoEHNE, F. C. Catalogo do Hervario e das especies cultivadas no Horto "Oswaldo 

 Cruz" com a indicacao daquellas que existem em duplicata e poderao ser cedidas em permuta. 

 [Catalogue of the herbarium and of the species cultivated in the Garden of "Oswaldo Cruz" 

 with an indication of those which exist in duplicate and which may be given in exchange.] 

 S vo., 48 p. Sno Paulo, 1919. 



1451. Holm, Theo. Antennaria alpina and A. carpathica. Rhodora 22 : 138-142. 1920.— 

 The author argues that these species should not be excluded from the flora of this continent, 

 but that both species exist in Canada as well as in the United States. He believes that 

 A. alpina (L.) R. Br. is polymorphic and is represented on this continent by various forms 

 which have been separated as varieties and even as species, such as A. glabrata Greene and 

 A. mucronata E. Nelson. Likewise, A. carpathica (Wahlenb.) R. Br. is claimed to be repre- 

 sented on this continent by A. lanata Greene.— James P. Poole. 



1452. HoLMBERG, Otto R. Einige Puccinellia-Arten und Hybriden. [Some Puccinellia 

 species and hybrids.] Bot. Notiser [Lund] 1920:103-111. May, 1920.— Four species and 

 six hybrids are discussed. Several new names or combinations for these are proposed.— 

 P. A. Rydberg. 



1453. Hutchinson, J. Clematopsis, a primitive genus of Clematideae. Bull. Misc. Inf. 

 Kew 1920: 12-22. 5 fig. 1920.— Clematopsis Bojer, previously in manuscript only or applied 

 to species as a nomen nudum, is taken up for a group of the Clematideae from tropical Africa, 

 South Africa, and Madagascar. Typical Clematis species have opposite leaves and sepals 

 that are induplicate-valvate in the bud. A valvate aestivation is considered derived from 

 an imbricate one, at least in the Ranales. In Clematopsis there is a gradation in aestivation 

 characters from simple imbricate to a type of induplicate-valvate arrangement that 

 approaches closely the condition in Clematis. One species of Clematopsis produces at times 

 alternate leaves. It is held that the present genus is a primitive one in the tribe and con- 

 nects that tribe with the Anemoneae. The following new combinations are made and new 

 species published: Clematopsis Kirkii {Clematis Kirkii Oliv.), C. Teuczii {Clematis villosa 

 var. Teuczii O. Ktze), C. speciosa, C. chrysocarpa {Clematis chrysocarpa Welw.), C. argentea, 

 C. katangensis, C. Oliveri, C. Stuhlmannii {Clematis Stuhlmannii Hieron.), C. trifida {Cle- 

 matis trifida Hook.), C. scabiosifolia {Clematis scabiosifolia DC), C. Stanleyi {Clematis 



