NEW BARE OE CRITICAL LICHEJ!fS 111 



U. ruhiginea (Mich.) Herre. The status of this plant is doubt- 

 ful ; it has been placed as a species, a variety and a form. It appears 

 to be fairly frequent. Exton (5), near Longleat (6), Bradley wood 

 (8), Artro wood (48). Crombie gives a few stations for his form 

 ferruginascens of TJ. ceratina, but states that his plant is not 

 U.Jlorida form ruhiginea of Mich. 



Cetraria aculeata (Schreb.) Fr. The tj'pe is the variety cam- 

 pestris Schaer. This has three forms — edentula Ach. with few or no 

 spinulose teeth or setae, acanthella Ach. with abundant setse, and 

 suhnlgrescens Harm, which is somewhat intermediate. All these 

 forms are found on the Blackdowns in Somerset (5). Variety muri- 

 cata Schaer. is practically the same as form hispida Cromb. and is 

 the common form of the Pennines and man}'- other upland m.oors. 

 Variety alpina Schaer. is often included in form hispida Cromb. 

 It occurs in the Snowdon district (49), and forms similar close 

 cushions to those of the commoner state of hispida, but has a more 

 flattened thallus. 



Platysma glaucum var. tenuisectum Cromb. Near Ilkley (64). 



(To be continued.) 



BIBLIOGRAPHICAL NOTES. 



LXVIII. — "The Gardeners' Chrok^icle." 



On^ turning up a reference in the index of the first volume of The 

 Gardeners^ Chronicle I was surprised to find that the page indicated 

 was not in the copy in the Department of Botany. Further inves- 

 tigation showed that from this copy of the Chronicle the first eight 

 numbers as originally published are altogether absent, their place 

 being supplied by what are erroneously described as "reprints," in 

 which only the pages containing what was presumably considered to 

 be the more important matter were included. These were reimposed 

 but not reset : the numbers of the pages remain unaltered, only the 

 heading of the first page of each " reprint " having been changed. 

 The headings run : 



" Nos. 1-2. Saturday, January 2-9, 1841. Reprinted February 26, 

 1841'' [pp. [l]-9, 19-25]. 



"Nos. 3-4. Saturday, January 16-23, 1841. Reprinted, April 2 " 

 [pp. [38]-41, 51-57]. 



"Nos. 5-6. Saturday, Jan. 30-Feb. 6, 1841. Reprinted, May 28, 

 1841'' [pp. [65]-73, 83-89]. 



"Nos. 7-8. Saturday, February 13-20, 184L Reprinted Sep- 

 tember 3, 1841" [pp. [97]-105, 115-121]. 



Owing to the plan indicated, the references in the index apply 

 accurately to the matter on these pages : it is only when one has 

 occasion to look up something on one of the missing pages that the 

 incompleteness of the numbers is detected. 



The subject is not of any importance, but seems of sufficient 



