Petrocelis middendorfii (Rupr.) Kjellm.

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Phycotheca Boreall-Americana. Collins, Holden, and Setchell.
1548. Petroeelis Hiddendorfii (Rupr.) Kjellm.
For references see P. B.-A., No. 900.
Forming a closely adherent reddish br^jg
at low water mark, Jaquish Island, Casco Bay,
1904.	THt *** YO hk Botanical Garden
fy ś ţ ¨cAtlifiS1!. 1 *22
The plant from the New England coast which has gone by
the name of P. cruenta appears to belong rather to this species.
It is seldom as well developed as the plant of the Pacific coast,
distributed as P. B.-A., No. 900, but there is always a much more
noticeable parenchymatous basal layer than in the true P. cruenta.
J. Ag.
NEW YORK BOTANICAL GARDEN
02184974
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Se/ BY N. L. Bruton, 1 922
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NORTH AMEKICAN ALGAE.
DETERMINED BY F. S. COLLINS.
Published by the Cambridge Botanical Supply Company.
253. Petroeelis cruenta J. A
%*i F.S . COLMNr HFRB1WQM
On rocks allow water mark. p„c„bwti-
The New York Dot .Ntcau Cahp^i
Mount Desert, Maine, July, 1900.	By N. L. Srityon, iS22
Coll. F. S. Collins.
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