IQ Cainillo Karl Sehneider: Morphologie der Gewebe (Anatomie). Uß 



2. The leaf-trace bundles, especially the lower ones, undergo a market 

 change as they enter they stem. This consists in the appearance of a 

 distinct endodermis. and in an increase in the xylem, leading to the 

 formation of a greatlv swollen amphivasal bündle. Below the node 

 these bundles resume the collateral type. 



3. Amphivasal bundles of the ordinary type, though absent in the aerial 

 internodes, are very commonly found in the nodes, and arise by fusion 

 of collateral bundles which are generally leaf-trace bundles. In some 

 species they are more nuinerous in the nodes at the base of the plant, 

 and vvhere such nodes are crowded, the bundles may retain the amphi- 

 vasal condition through successive internodes. The presence of amphi- 

 vasal bundles in reproductive branches of plantes in which these bundles 

 are scarce in ordinary nodes, points to their beeing an ancestral feature, 

 which in highly organized members, has disappeared from most parts 

 of the plant, but is retaint in the conservative flowering axis. It appears 

 that the amphivasal bundles so characteristic of monocotyledons, in all 

 probability made their appearance in connection with the entry of 

 nuinerous leaf-trace bundles into the nodes, bub that secondarily, in certain 

 instances, they are found to be related to branching. 



4. A well-marked, though generally short-lived, cambium occurs in the 

 bundles just above the node or near the base of the leaf-sheet in cer- 

 tain grasses. This fact is considered to lend Support to the view that 

 monocotyledons have been derived from some group possessing a cam- 

 bium, probably the dicotyledons. 



5. The anatomical features of the grasses point to their being a more highly 

 specialized family than the sedges. 



49. Contzen. F. Aus der Pflanzenwelt Unterfrankens. IX. Die Ana- 

 tomie einiger Gramineen wurzeln des Würzburger Wellenkalkes. 

 (Verh. phys.-med. Ges. Würzburg, N. F., XXXV III, 1 906, p. 2(35—329.) 



Siehe Jahresb. 1907. 



50. Drabble, E. and Scott, D. ß. The structure and cultivation of 

 the Ramie Plants Boehmerio nivea Hook, et Arn. and var. tenacissima 

 Gaudich. (Quart. Journ. Inst commerc. Research Tropics, I, 1906, p. 94 — 100. 

 pl. I-II.) 



Nicht gesehen. 



51. Ferreira Diniz, Josö d'Oliveira. Estudo auatomico do Ranunculus 



repens. 4°. IG pp., 12 color. Taf., mit 21 Fig.. Lisboa 1906. Luisier. 



52. Freeiiian, W. G. Ein Vergleich der Sabina-Bl'&tteT des Handels. 

 (Pharm. Journ., 1905, p. 829.) 



Nach Ref. in Pharm. Praxis, V, 1906, p. 11. 



Steinzellen im Mesophyll fehlend, Blätter gekreuzt: Juniperus Sabina- 

 Steinzellen im Mesophyll vorhanden: 



Blätter gekreuzt J. thurifera, 

 Blätter spiralig J. phoenicea. 

 Bei J. phoenicea ausserdem die Ölhühle von der Epidermis durch Hvpo- 

 derm getrennt, welches bei Sabina an dieser Stelle fehlt. 



53. Fritzsche, Felix, über den Unterschied zwischen Empetrum 

 nigrwm L. und Empetrum rubrum Willd. (Abh. Isis Dresden. 1906, p. 22— 23.) 



Referat siehe ,.Morphologie und Systematik". 



