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385 



gnosis (I.e. p. 37): ''frondibus erectiusculis fere clavæformibus, inferne laxe ramen- 

 taceis superne dense imbricatis". And in the description further down on the page 

 he adds: ''In forma occidentali sæpiiis ramenta ad rachidis partes suprenias densiora, 

 irnmo dense imbricata hunt, parte apotheciiformi extrorsum oblique versa, rachides 

 ita omnino obtegentia; frondes his locis imnio digitum minorem crassæ". From 

 var. Chemniizia this form differs by having the uppermost swollen part of the 

 ramuli convex and not more or less disciform or even concave. The lowest ramuli 



Fig. 29. Caulerpa racemosa (Forsk.) Weber van Bosse var. occidentalis (J. Ag.). 

 From Christiansfort (St. Jan). (About 1 : 1.) 



are commonly more or less cylindrical, higher up they become more and more 

 swollen at the apex; they have a rather long thin stalk often over -'/i of the length 

 of the whole ramulus and then swell suddenly. The swollen part is flattened 

 convex in the uppermost, outwardly bent side. The figure quoted of Reinke 

 gives a very good illustration of this variety; cfr. also the figures given here 

 (Fig. 28 and 29). Svedeuis has delineated (1. c. fig. 30) a related form from Ceylon, 

 which shows a transition to var. iiuifera and he is of the opinion that it is pro- 

 bably such forms which have caused Mme. Weber van Bosse in her Monograph 

 to refer var. Chemnitzia to C. racemosa and not to C. peltata. For the rest Mme. 



n. K. n.Vidensk SelsU.SUi 



. Mække. nnturvidensk. o^ iiiatheni. .\rtl. IV. 



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