— 202 — 



evident from what he says p. 109: "Die Originale der hier vor- 

 gestellten Abbildungen, haJDe ich nach dem erstem, als einem gan- 

 zen Gewachse, aus der bertihmten Sammlung des Herrn Prasiden- 

 tens von Schreber, mitgetheilt erhalten. Die einzelne StSmme aber 

 wurden mir vom Herrn Doctor Mohr beliefert, und sind von 

 Herrn Prof. Vahl selbsten aus St. Croix mitgebracht, und unter 

 vorgesetzten Namen von ihm beschrieben v^orden." That Vahl 

 himself should have collected the plants at St. Croix is however 

 not right, they were as pointed out above collected by West. 



Fig. 18. Acantliopliora spicifera (Vahl) nob. 

 A, ramulus with antheridial stands. B, a cystocarp C. sticliidial ramuli with tetrasporangia. 



Lamouroux has evidently not been aware of Vahl's de- 

 scription, or the figure and description of Esper. These on the 

 other hand were known to both G. Agardh and J. Agardh and 

 it seems strange that they have not taken Vahl's name up again. 

 J. Agardh writes (1. c. p. 820) for the rest about this matter: 

 "Fucum spiciferum Vahlii ad Ac. Thierii pertinere, specimine ex 

 Herbar. Hoffman, quod tamen an authenticum sit nescio, assumsi." 



This species has been found with tetraspores, antheridia and 

 cystocarps. (Fig. 18.) 



The tetraspores are developed in stichidial ramuli bearing 

 spines (Fig. 18 C), in contrast to the spineless ovate, roundish 

 stichidia of Acanthophora Delilei Lamx. as mentioned and described 



