208 Floristik, Geographie, Systematik etc. 



the stolons are exceedingly short, and the leaves fleshy. A typical 

 rhizome consisting of several tuberous internodes is possessed by 

 5". Jainesü Torr., but the stem above ground does not persisl in this 

 species. The swelling of the internodes is due to the secondary for- 

 mations in the Stele and the large development of the pith, which 

 contains deposits of starch. Six figures illustrate some of these stems 

 and rhizomes. Theo Holm. 



Olsson-Seffer, P., Visits to some botanic gardens abroad. 

 (Plant World. X. p. 27—31. f. 9—11. Feb. 1907; 58-62. f. 14. Mar. 

 1907; 84—90. f. 16—18. Apr. 1907; 117—118. May 1907; 130—137. 

 f. 25-28. June 1907; 161—167. f. 30-32. July 1907; 169—172. f. 33. 

 Aug. 1907; 193—202. f. 38-41. Sept. 1907.) 



Short illustrated accounts of Honolulu, Tokyo, Hongkong, 

 Buitenzorg, Tjikeumeuh, Tjibodas, Singapore, Kuala Lum- 

 pur, Penang, Peradenij'-a, Henaratgoda and Hakgalla. 



Trelease. 



Stapf, O., Spartina Townsendii. (Gardeners Chronicle, XLIII. p. 33—35. 

 2 figs. and 2 maps. January 1908.) 



The rapidit}" with which this grass secures a hold on tidal mud 

 has been noteworthy in recent years, especially in the Solent, 

 Southampton Water, and neighbouring parts of the coast. A 

 map shows the past and present distribution of the three British 

 species (5. stricta, S. alternifolia, S. Townsendii) on the coast of 

 Sussex, Hampshire and the Isle of Wight, 5. stricta has been 

 known since 1629 and is indigenous; 5. alternifolia , first recorded 

 in this district in 1829, is introduced. 5. Townsendii was recorded 

 in 1870 at Hythe, in 1883 it was found two miles north of this; the 

 first record for the Isle of Wight is 1893 as "several strong pat- 

 ches" at Yarmouth where it now Covers a large area. The species 

 extends now along an irregulär coast-line the extreme points of 

 which are 50 miles apart. As no Spartina corresponding to this 

 species has yet been observed in America, hence it cannot have 

 been introduced. Nor can the author admit its sudden appearance 

 as a mutation from 5. stricta, which is a non-varying species. His 

 view is that 5. Townsendii is a hybrid between 5. stricta and S. al- 

 ternifolia, as suggested by Foucaud in 1894. This is supported b}^ 

 the anatomical and morphological structure, and the fact that 5. 

 Townsendii (inclusive of 5. Neyraittii, Foucaud's other hybrid form) 

 occurs "just in the two parts of the world where the two reputed 

 parents meet, namely at the head of the Bay of Biscay and in 

 Southampton Water." Dispersal takes place bv spikelets and 

 grains transported in water. The embryo is larger than the endo- 

 sperm and is bright green, a fact pointing to rapid germination; 

 the seedlings are soon firmly rooted. A descriptive key is given for 

 the three British species, and two figures show the habit of S. stricta 

 and S. Townsendii. W. G. Smith. 



Ausgegeben: 35 A.tigustus 1908. 



Verlag von Gustav Fischer in Jena. 

 Buchdruckerei A. W. Sijthoff in Leiden. 



