ULOTHRIX 157 
FUL SPECIE 
ULOTHRIX MONILIFORMIS Kitz. Spec. xm 347. 1849; Tab. 
phye. 2: pf. 88. 7. 4. 1852. 
Hormidium moniliforme Kitz. Phyc. Gen. 244. 1843. 
Hormiscia moniliformis Rabenh. Flor. Eur. Alg. 3: 361. 1868. 
Cooke, Brit. F. ۷۷۰ Ale 179. pl. 70. f. z. 1883. 
Light green, more or less crisped, torulose, 11-14 م‎ in diam- 
eter; cell-wall thickened. 
Exsic: Phyc. Bor. Am. 672. East Haven, Conn., April, 1894 
(W. A. Setchell). 
This specimen is certainly a form of Ulothrix and corresponds 
exactly to Kützing's figure and description. Whether it is a dis- 
tinct species, or only a condition of some other species with a 
thickened cell-wall, cannot at present be determined. 
Wolle records this species as collected by Austin in sphagnum 
swamps in New Jersey (Bull. Torrey Club, 6: 188. 1877), but the 
specimen in the Wolle herbarium is composed of Microspora floc- 
losa in the akinete stage. The same may be said of Ulothrix 
lacustris Hilse; Rabenh. Alg. Eur. 7540, which is quoted as a 
synonym of U. moniliformis in Rabenh. Flor. Eur. Alg. 3: 361. 
1868. Probably Wolle finally recognized the true character of 
his specimens, for no mention is made of the species in the Fresh 
Water Algae. 
ULOTHRIX SUBTILIS THERMARUM Rabenh. Flor. Eur. Alg. 3: 
365. 1868. Hansg. Prod. Ale Bohm. 1: 59. 1886. Wolle, 
F. W. Ale 136. pl. 178. f. 16, 19. 1887. Delon, Syll. Ale 
I: 160. 1889. 
Exsic.: Rabenh. Alg. Eur. 2568, June, 1877. Bethlehem, 
Pa. (F. Wolle) Wittr. & Nordst. Alg. Exsic. 779. Bethlehem, 
Pa. (F. Wolle). 
ULOTHRIX FLACCIDA CALDARIA (Kütz. Hansg. Prod. Alg. 
Bohm. 1: 6r. 1886. 
Gloeotila caldaria Kitz. Phyc. Germ. 191. 1845; Spec. Alg. 
363. 1849; Tab. Phyc. 3: X. 32. f. 3. 1853. Rabenh. Flor. 
Eur. Alg. 3: 320. 1868. 
Hormiscia flaccida caldaria Hansg. Flora, 71: 265. 1888. 
DeToni, Syll. Ale 1: 162. 1889. Tilden, Bot. Gaz. 25: or, 
JS. 64,5. 1898. 
