~ 
CRYPTOGAMIA. ALGA.. Conferva.(1) Threads 
 sumple, equal. 
Rocks and stones in the sea. Near Christ-church, Hamp- 
shire, ' A. April 
125 
U. Stem and primary ‘branches of equal thickness, verticilla‘ta, 
broadest at the origin of the branches : ultimate 
branches very numerous, of equal thickness, filled 
with close set whirls of fructifications, 
So very slippery that. when first taken up it glides through 
the fingers. «eh et cent ii ‘ 3; : mes ft ? , 
_ This non-descript Ulva was sent me by Major Velley, with 
the following description. It is a large plant; the lowet part 
of the main stem consists of a lubricous skin which in ‘theses 
ior 
i ULF 
Sea ccast. | , ug vortt i adirodve eee ° 
(1) Threads unbranched, equal, without joints. 
C. Threads very long.” eae S a 
Dill. 2. 1-Mich. 89. 7—Lob. obs. 054, 1—Ger, em, 1570, 11 
Park. 1261. 2. _ : ; hroufl 
Entirely formed of threads, from 1 to 2 cubits or more in 
length, extremely slender, floating, not branched, green, shining 
like silk, Dru. 12. ss 
Crow-silk, Slowly flowing brooks and rivers, erat 
Var. 2. Shorter and thicker. 
Dill. 2. 2~Mich. 89, 6. " 
__. tivula’ris, 
