Zygnemataceae

8 9 10

The New York

copyright reserved botanical garden

276. Rhizoclonium hieroglyphicum (Ag). Kg. var. atro-brunneum Til-
den. Observations on some West American Thermal Algae. Bot.

Gaz. 25: 93,94. pi. 8. f. 14-17. F 1898.

In long strings, dark brown {fuligineus); normal vegetative cells 15-22
mic.in diameter, less than once as long to three times longer than wide,
very variable in size in the same filament, rarely producing short
rhizoids; cell contents dark brown, granular.

In shallow water, plastered to surface of ground, most luxuriant in slow
current. In overflow through grass, of hot spring on bank above.
Temperature 24° C.

Norris Geyser Basin. Yellowstone National Park.

T. E. T. 27 Je 189^Smum“2

( COLUMBIA J
Xj-fWlVERSVViX

( COLUMBIA

J&il

C COLL
Xi/N/VE

Determi

necf by Harry K. Phinney

Phi

NEW YORK BOTANICAL GARDEN

02110268

^SBARiUSr^

COLUMBIA
J^W/VERSIT^

^2^.'‘ Rnlzoclonium hieroglyphicum (Ag). Kg. var. atro-brunneum Til-
den. Observations on some West American Thermal Algas. Bot.
Gaz. 25: 93,94. pi. 8. f. 14-17. F 1898.

In long strings, dark brown (fuligineus); normal vegetative cells 15-22
mic.in diameter,less than once as long to three times longer than wide,
very variable in size in the same filament, rarely producing short
rhizoids; cell contents dark brown, granular.

In shallow water, plastered to surface of ground, most luxuriant in slow
current. In overflow through grass, of hot spring on bank above.
Temperature 24° C.

Norris Geyser Basin. Yellowstone National Park.

J. E. T. 27 Je 1896.

02110268