448 Physiologie. — Algae. 



guajacin ebenfalls obigen krystallisierenden Körper C19 H20 0„ und 

 ferner einen zweiten krystallisierbaren phenolartigen Körper Cic HisOs 

 und eine nicht krystallisierbare hellbraune amorphe Masse. 



Die Guajakonsäure stellt nach den Untersuchungen des Verf. keinen 

 einheitlichen Körper dar, sondern besteht aus der nicht krystalli- 

 sierenden, leicht oxydierbaren und das bekannte Blau erzeugenden 

 «-Guajakonsäure und der sich gegen Oxydationsmittel indifferent ver- 

 haltenden krystallinischen p'-Guajakonsäure. Ersterer kommt wahr- 

 scheinlich die empirische Formel C-.- Hsi Oe oder Ce- H-g O« zu, 

 letztere besitzt die Formel CjiH-.;Oö. Bredemann (Marburg). 



CoLLiNS, F. S., New species, etc. issued in the Phycotheca 

 Bo r eali- Am e ricana. (Rhodora. VIII. June 1906. p. 104 

 — 113.) 



Formal publication of certain new species, varieties and forms, 

 issued byColIins, Holden and Setchell in their Phycotheca 

 Boreali-Americana, from the beginning, in February 1895, to the 

 present, which have not been formally published heretofore, unless 

 the issuance of descriptive labeis with the exsiccati is held to con- 

 stitute valid publication. The descriptions here given are stated to 

 be exact transcripts of the labeis distributed with the plants during 

 the period mentioned. 



The list follows, the numeral being the number under which the 

 plant was issued: 



1160. Oscillatoria salinanim. Near Guanica, Porto Rico. 



707. Schizothrix Simmonsiae. Rhode Island. 



1168. Calothrix criistaceal\\urti forma prolifera (Flah.) n. comb. 

 Alameda, California. 



1263. Spirogyra porticalis (Müll.) Cleve forma minor. Con- 

 necticut. 



1 265. Tetraspora gelatinosa Kütz. forma uniformis. Berkeley, 

 California. 



1267. Enteromorpha micrococca Kütz. forma bullosa. San 

 Leandro, California. 



1185. Prasiola Gardnerl. Alameda, California. 



664. Chaetoinorpha californica. La Jolla, California. 



978. Cladophora flexiiosa (Griff.) Harv. forma Floridana Key 

 West, Florida. (In a footnote it is stated that perhaps this is 

 referable to C polyacanlha Mont. from G u i a n a.) 



1193. Cladophora crispata (Roth) Kütz. forma siibsimplex. 

 San Leandro, California. 



1194. Cladophora fracla (¥lDa.n.) Kütz. lorma. re/lexa. North 

 Berkeley, California. 



1079. Edocarpus confervoides (Roth) Le Jolis forma Halliae 

 (J. Ag.) n. comb. St. Augustine, Florida. 



670. Edocarpus confervoides (Roth) Le Jolis forma irregularis. 

 Maine. 



738. Strepslthalla Investiens. San Pedro, California. 



1038. Hecatonema maculans (Collins) Sauv. forma solutum. 

 Maine. 



1084. Laminaria Agardhii Kjellm. forma zostericola. Rhode 

 Island. 



LXXXIII. Laminaria Agardhii Kjellm. forma angustissima. 

 Maine. 



