Band 110. Nr. 1. 
XXX. Jahrgang. I. Bd. Nr. 1. 
Botanisches Centralblatt. 
Referirendes Organ 
der 
Association Internationale des Botanistes 
für das Gesamtgelbiet der Botanik. 
Herausgegeben unter der Leitung 
des Präsidenten: des Vice-Präsidenten: des Secretärs: 
Prof. Dr. Ch. Flahault. Prof. Dr. Th. Durand. Dr. J. P. Lotsy. 
und der Redactions-Commissions-Mitglieder : 
Prof. Dr. Wm. Trelease, Dr. R. Pampanini, Prof. Dr. F. W. Oliver 
und Prof. Dr. C. VVehmer. 
von zahlreichen Specialredacteuren in den verschiedenen Ländern. 
Dr. J. P. LOTSY, Chefredacteur. 
Abonnement für das halbe Jahr 14 Mark 
TVr 1 1 arm 
1 * * durch alle Buchhandlungen und Postanstalten. 
Alle für die Redaction bestimmten Sendungen sind zu richten an Herrn 
Dr. J. P. LOTSY, Chefredacteur, Leiden (Holland), Witte Singel 26. 
Art. 6. des Statuts de 1 ’Association intern, d. Botanistes: 
Chaque membre prend l’engagement d’envoyer au redacteur en 
chef et aussitöt apres leur publication un exemplaire de ses travaux 
ou ä defaut leur titre accompagne de toutes les indications bibliogra- 
phiques necessaires. 
Holm, T., Sisyrinchium. Anatomical studies of North Ame¬ 
rican species. (Bot. Gazette. XLVI. p. 179 — 192 . Plates X—XIa. 
Sept. 1908 .) 
According to Sereno, Watson, Bentham and Hooker the 
genus Sisyrinchium comprises three sections viz. Bermudiana 
Adans, Echthronema Herb. ( Hydastylus Salisb.), and Eriphilema 
Herb.; these sections were founded upon floral structure, and espe- 
cially whether the filaments of the stamens are connate for their 
entire length or only partly so. Otherwise the general habit of the 
species of these sections, the inflorescence, foliage etc. does not ex- 
hibit any particular distinction so as to regard the section as any- 
thing but „sections”. Nevertheless in late years some American 
writers have not only elevated these sections to generic rank, but, 
furthermore, they have increased the number of species to very 
near two hundred, if not more. — In the diagnoses of these spe¬ 
cies the foliage play^s an important part, the relative length of the 
bracts, the structure of epidermis: glabrous or scabrous etc., cha- 
racters which are neither constant nor of any specific importance 
within the Irideae. 
The internal structure of the Irideae has been treated by some 
authors, mostly the leaves, however, and but ven r little has been 
written in regard to the anatomy of Sisyrinchium In the present 
Botan. Centralblatt. Band 110. 1909. 1 
