144 



times as long as the breadth of the midrib, often even more. These 

 forms have a great likeness to the figures 8, 12 and 13 of pi. XXVII 

 and figures 10 and 12 of pi. XXVIIl in M™'^ Weber-van Bosse's 

 Monograph. These specimens I have called var. plumarioides 

 (Fig. 112). They are the forms which M™^ Weber-van Bosse 

 has called f. elegans, f. alternifolia and f. amicorum, and are referred 

 by her to the var. lycopodiiim. This name I prefer to use only 

 for the typical form (C. Lycopodium J. Ag.) which is characterized 

 by having the long cylindrical ramuli placed in several rows. Beau- 

 tiful specimens of this form are present in M™'' Weber's Her- 

 barium originating from the Barbados, where they were collected 

 by M^^'' Vickers. In Danish West India I have not met with 

 this form. 



I cannot however lay too much stress on the fact that tran- 

 sitional forms occur in great number between the var. typica and 

 var. plumarioides, and regarding a great number of my specimens 

 e. g. from Christianssteds Lagoon, it is impossible to decide to 

 which form they belong. 



Finally, we meet with Caulerpa ciipressoides in deeper water 

 in the open sea. The forms we find here are rather large. They 

 are dichotomously branched and the branches, which have the 

 edge turned towards the midrib, are all placed in nearly the same 

 plane, in such a way that the erect shoots have more or less an 

 obviously flabellate form. The ramuli are always distichous and 

 variable as to the length, from a little longer than the midrib to 

 5 — 6 times as long. The plant is of a fresh-green colour. 



Two forms can be distinguished. One of these is rather richly 

 dichotomously branched in such a way that the erect shoots are 

 more or less flabellate. Ramuli are rather short, 1 — 3 times as 

 long as the midrib. This form I have called var. flabellata (Fig. 

 113 and 114). The other form is likewise clearly dichotomously 

 but less ramified. The ramuli are long, cylindrical and bent some- 

 what upward. It has a great resemblance to the figure 9, pi. XXVII 

 in M'"*^ Weber's Monograph, a form she has called f. elegans and 

 which name I also have used for my form (Fig. 115). These two 

 varieties though they seem very different are nevertheless so nearly 

 related that one can find both forms on the same rhizome (see 

 Fig. 116). 



]yjiie Vickers lias found var. elegojis at the Barbados in shal- 

 low water. Through the kindnes of M'"° Weber I have had the 

 opportunity to see several specimens of this var. preserved in her 

 Herbarium. They agree very w(^ll with mine, though generally 



