“4 THE JOURNAL OF BOTANY 
The type of Rhipocephalus Phenix is no longer in existence, but 
there is a satisfactory figure of it in Ellis and Solander’s Natural 
History of Zoos (1786), p. 126, tab. 25, fig. 2, under the name 
Corallina Phen It has flabella of about 15 mm. long 
We think tha a t the ere are three main forms of A. Phaniz, which 
should be defined as follows :— 
1. Forma typica, fiabellis c. 15 mm. longis, capitulum oblongum 
Tee efformantibus. 
Unknown. 
weit ma brevifolia, flabellis 5-10 mm. longis, swpius in verti- 
cillos eee | vaginantes ¢ dense imbrieatos lateraliter conjunctis, 
‘comam comptam szepe elongato-conica ; Stipite usque 
ad apicem iblealt pereurren sev 
: . Bahamas, Bemini Harbor, in 1-6 dm. of water at low tide, 
M. A. ae Me 3239). Guadeloupe, Mazé! (No. 24, 1"* Série) in 
ore Bri 
geeks Ue, flabellis 20 mm. et ultra longis, irregularibus, 
 oofinde et irregulariter laciniatis, ascendentibus vel divergentibus, 
comam horridulam efformantibus. 
Hab. Florida, Key ete on sandy bottom in 3 dm. of water at 
low tide, M. 4. Howe! (No. 1612). Florida, Rugel 
Rugel’s plant, of ig we give a figure (fig. 3), diffors strikingly 
from normal specimens, as we said above, in the great length of its 
stem (150 mm.) and of its flabella (48 mm.). Yet, though twice as 
long as any other specimens that we have seen, it is nothing but a 
giant example of our form longifolia, differing in no respect. (apart 
from size) from ordinary specimens ; for instance la 
the normal characteristic structure of R. Phenix, being Bea osed 
of laterally coherent filaments which have a diameter of 75-100 Ps 
Though the flabella exhibit an unusual degree of spreading, this is 
largely due to their accidental displac ement during drying, and is 
not natural; for the effect of gravitation upon the flabella when 
submerged would be very slight, and would be more than counter- 
acted by the buoyancy derived from the clinging or imprisoned 
bubbles of oxygen gas evolved by the plant during the process of 
p esis under a tropical sun. During life the flabella were 
probably pepe From prolonged ete growth the stem attained 
its remarkable length; year by year it produced gradually longer 
and longer flabella at its apex, the olde te ES shorter ones falling off 
below. In this respect it is the antithesis of the form brevifolia in 
which the flabella spina’ exceed a bere of 10 mm., though the stem 
may grow up to a length of 80- 
In conclusion, ee should tke 4 "thank Mr. M. A. Howe for 
placing at our disposal such excellent material, and for the benefit 
of his observations and experience. We have also to thank him for 
ps Hes before us some fine and recently gathered specimens of the 
and almost unknown tea oblongus, an account of 
pei will be published later 
