Arbejder fra den Botaniske Have i Kobenhavn. Nr. 42. 
Sertryk af Botanisk Tidsskrift. 28. Bind. København 1908 
The Dasycladacex of the Danish West Indies. 
By 
F. Borgesen. 
The following treatise comprehends the species of Dasycladaceæ 
hitherto found in my material of alge collected during my three 
sojourns at the West Indies. 
In the arrangement of the genera I follow the system of Olt- 
manns in his “Morphologie und Biologie der Algen”. 
I. Dasycladee. 
Neomeris Lamouroux. 
N. annulata Dickie. 
Dickie, On the Alge of Mauritius (Journal Linnean Society, vol. 14 
p. 198). H.Solms-Laubach, Ueber die Algengenera Cymopolia, Neomeris 
und Bornetella (Ann. du Jardin bot. de Buitenzorg, Vol. XI. 1893). 
Neomeris Kelleri Cramer, Ueber die verticillirten Siphoneen besonders 
Neomeris und Cymopolia (Neue Denkschrift. der schweiz. naturf. Gesell- 
schaft, Bd. XXX, 1887), and Ueber die verticillirten Siphoneen besonders 
Neomeris und Bornetella (Neue Denkschriften, Bd. 32, 1890). 
Besides the typical form, which I have collected in great quan- 
tities, I have found a few specimens which in the form and size 
of the sporangia show some difference. The sporangia were namely 
cylindrical about 2'/2 times as long as broad with the apex obtuse, 
—, rounded (see Fig. 1d). The spore was about 190, long and 70 u 
= broad. As to the size of the spores of N. annulata Solms (|. c. 
— p.71) gives the length to be 140» and the breadth 65—70y and 
te these dimensions agree very well with those of the common typical 
— form. But sometimes also other sizes are to be found, in one 
<I specimen e.g. the dimensions of the spores were 160 long and 
