Abstract
The Lichens on which I have recently been experimenting are two in number, namely, the South American variety of Roccella tinctoria , which is imported in considerable quantities from the neighbourhood of Lima and Valparaiso, and is known in commerce as “Lima weed;" and the Roccella tinctoria var. fuciformis , the same which I had formerly designated Roccella Montagnei ; it is the “Angola weed ” of commerce. Soon after the publication in 1848 of my first paper on this subject, Dr. Schunck threw out the hypothesis that the various compounds produced by boiling lecanoric, erythric, alpha- and beta-orsellic acids with alcohol were all one and the same ether—the pseudoerythrin of Heeren.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
