] 78 Allgemeines. - - Anatomie. Descendenz u Hybriden. 



insularis, Juslicia galapagana Lindau, Borreria ovalis abingdonensis 

 {B. ovalis Roh. and Greenm.), Acanthospermum microcarpum, Elvira 

 inelegans {Desmocephalum inelegans Hook.) , F.. repens (Microcoecia 

 repens Hook). Pectis Anderssonii (P linearis Rob. and Greenm.), P. 

 Hookeri (P. gracilis Roh. and Greenm.), Scalesia Helleri, S. Hopkins», 

 S. microeephala, S. narbonensis and «S. Snodgrassii. All these names 

 nnless otherwise indicated are apparently proposed by the anthor of the 

 paper. The following species are Hgured: Phoradendron uncinatum, 

 Bursera malacophylla, Acanthospermum microcarpum , A. hispidum, 

 Telanthera Hellen, T. Heller/' obtusior, Scalesia Heller/', Pilea Baurii, 

 Telanthera Snodgrassii, Acnistus insular is, Bidens refraeta, Euphorbia 

 nesiotica, Scalesia Hopkins/ 7, >V. microeephala, S. narbonensis, S. Snod- 

 grassii. 



The list oi species, with Synonyms and localities, is followed bj 

 tabulation of the several collections of higher plants which have been 

 made on the Islands, and a table showing the distribution of the 

 species of higher plants through the archipelago. The general features 

 ol the flora and its affinities are discussed, the conclusion being reaffirm- 

 ed that it is only an outlying portion of the American flora but with a 

 strong specific differentiation. The several islands are subjeeted to a 

 short discussion which concludes with two tables snmmarising the 

 florulae and the species common to two or innre islands. In a section 

 clevoted to the botanical evidence regarding the origin of the Galäpagos 

 Islands, the theory that they are pelagic islands, built up from the sea 

 floor by volcanic action rather than Continental peaks isolated by sub- 

 sidence, is found less at variance with the peculiar distribution of the 

 plants than when the author made a study of the same subjeet some 

 years since, and the botanical evidence, so far as it has been made out, 

 is now regarded as opposed rather than favorable to the subsidence 

 theory. A small list of addenda, based on collections by Dr. Stein - 

 d achner of the Hassler Expedition, which concludes the paper adds 

 the following new names: Platyleje/ii/ca pogonoptera Evans (Lejeunea 

 pogonoptera Spruce), Chlor/'s paniculata Scribner and Kyllinga nudieeps 

 C. B. Clarke. Trelease. 



Hanausek , T. F., Ueber die Gummizellen der Tari- 

 lüilsen. (Berichte der Deutschen Botanischen Gesellschaft. 

 1902. Bd. XX. p. 77.) 

 Die Zellen der inneren Epidermis vom Perikarp sind bei 

 den Tarihülsen (Caesalpinia digyna) , deren histologische 

 Zusammensetzung Verf. ausführlich beschreibt, als Gummi- 

 zellen ausgebildet. Das Gummi entsteht nach Verf. aus den 

 Membranen der Zellen. Die Hülsen enthalten gleichzeitig 



in besonderen Schichten reichlich Gerbstoff und Balsam 

 (ätherisches Oel). Küster. 



Handei-Mazzetti, Heinrich, von, Eine neue hybride Gentiana 



aus Tirol. (Zeitschrift des Museum Ferdinandeum in Inns- 

 bruck. III. Folge. Jahrgang 1902. Heft 46. 5 pp. Mit 

 einer Tafel.) 



Lateinisch und Deutsch genau beschriebener Bastard von Gentiana 

 campestris L. subsp. Islandica Murbeck < aspera Heg. et Heer subsp. 

 Sturmiana A. et F. Kern, dem mit dem Namen Gentiana Tirolensis be- 

 nannt wird, wobei Verf., da alle möglichen Combinationen der Formen 

 von G. campestris mit denen von G. aspera wohl kaum auseinanderzu- 

 halten sind, unter diesem Namen (G. Tir.J die Kreuzung der ganzen 

 Formengruppe der genannten Gollectivspecies versteht. Der bei Hall 



