or 
وت وک wm‏ 
Ke,‏ 39 يس سس سيم سیب ےی 
[| 
UrorHRIX 147 
in its original sense, viz., for the species now recognized under 
Urospora.* 
Hormiscia in this sense is distinguished from the marine 
species of Ulothrix by the larger size of its filaments, the chroma- 
tophore consisting of a more or less spiral band or of a somewhat 
reticular parietal plate, and above all by the zodspores which are 
narrowed at the posterior end into a pointed tail-like process. 
This genus (as Urospora) has been removed to the Cladophoraceae 
by Wille (g90), on account of the multinucleate character of the 
cells, and therefore does not receive detailed treatment here. 
Synopsis of Species 
Fresh-water species. 
Filaments 11-45 in diameter, pyrenoids several. 
Mature filaments 25-45 م‎ in diameter. I 
Cells 15-20 م‎ in diameter, 14 as long. 2, 
Cells 13-16 مم‎ in diameter, 1-2 > as long. 3. U. aequalis. 
ells 11 in diameter, 1(—14 as long. 4. U. oscillarina. 
Filaments 5-9 in a. one sete in a cell. 
Cells 7.5-9 u in diam 5. U. tenerrima, 
Cells 5-6 u in یہد‎ "6. U. variabilis. 
Salt or brackish-water species 
Diameter 6-15 u, cell-wall thin 7. U. implexa. 
Diameter 10-25 ,م‎ cell-wall thickened. 8. U, flacca. 
1. ULOTHRIX zonata (Web. & Mohr) Kütz. Flora, 16: 519. 
1833; Phyc. Gen. 251. ۸۶. 9o. 1843; Spec. Ale 347. 1849; 
Tab. Phyc. 2: fl. go. f. 2. 1852. Dodel, Jahrb. wissen. Bot. 
IO: 417-450. pl. 71-38. 1876. Wolle, F. W. Alg. 133. A. 
117. 1887. Chodat, Beitr. Krypt. Flor. Schweiz, 1°: 267. 
.از‎ 453. 1902 
igo aee m. species, then, are as follow 
Hor PENICILLIFORMIS (Roth) ye Flor. Scan. 327. 1835. 
ی سے‎ iformis Roth, Cat, Bot. 3: 1806, 
Urospora mirabilis Aresch. Nov. Act. ZEN 2 Upsal. III. ei: No. 2, p. 16. 
1866. 
۰ penicilliformis Aresch. Nov. Act. Reg. Sci. Upsal. III. g!: No. 1, p. 
4. 
2. Hog MIsCIA WORMSKIOLDI (Fl. Dan.) Fries, 7. «. 328. 
Conferva Wormskioldii Fl. Dan. pl. 7547. 181 
ی‎ Wormskioldii Rosenvinge, Bot. Tidssk. 18: 57. 1892. 
> RMISCIA COLLABENS (Ag.) Rabenh. Deutsch. te 98 22: 115. 1847. 
سای‎ collabens Ag. Syst. Alg. 102. 2 
Hormotrichum collabens Kütz. Phyc. سے‎ 205. 1845. 
