408 Eev. W. A . Leighton on the Determination of the 



The yellow reaction (K + ) is observed in C. delicata and its 

 varieties in the herbarium of Delise and also in his C. syrtarum 

 and C. squamosa var. anomcea, Del. (Dr. Nylander in Hit.) 



See remarks under C. squamosa, Hoffm. postea. 



12. C. Santensis (Tuck.). Of this Dr. Nylander says {in litt.), 

 "Decidedly, after a renewed examination^ C. Santensis, Tuck. 

 Suppl. ! and Nyl. Syn., is a Cladonia near to delicata, and not a 

 Pycnothelia. Its reaction is strongly K + . 



** PhcEocarpcB (K — ), 



13. C. alcicornis, Flk. (Dill. t. xiv. f. 12 a; Vaill. Paris, t. 21. 

 f. 3) = Schfer. L. H. 455; Leight. Exs. 15; Coem. CI. Belg. 

 5, 6, 7, 8, 9, 10. 



My herbarium contains this also from Bagni di Lucca and 

 Rome (Dr. Deakin), Pont du Gard (Mr. G. Bentham), Lheris 

 (Dr. Philippe), Ayton, Yorkshire (Mr. Mudd), Aberdovey (Rev. 

 A. Bloxam), and from Bodbury Ring, near Church Stretton, 

 Shropshire. 



The want of reaction (K — ) separates this from C. endivice- 

 folia (K + ). 



14. C.firma, Nyl. (Syn. p. 191). This, according to a spe- 

 cimen from Dr. Nylander himself (gathered by H. de la Perrau- 

 diere on TenerifFe in 1855), has a peculiar red-brown, almost 

 sanguineous, reaction, which I have noticed in no other plants. 

 = Coem. Clad. Belg. 11, 12, 13. 



I possess similar specimens from Tatra, Lower Austria (Dr. 

 Harslingsky), and from Christmas Harbour, Kerguelen's Land 

 (Dr. J. D. Hooker). 



15. C. ceratophylla, Eschw. = Wright's Cuba, 25; Spruce 

 Lich. Amaz. 151. 



I have it also from Mount Corcovado, near Rio de Janeiro 

 (M. Casaretti). 



16. C. verticillaris, Mnt. (fide spec, a DNtrs. collected by 

 M. D. Casaretti in sylvulis Restinga de Taypii prope Rio de 

 Janeiro, labelled C. perfoliata, Flk.) (Dill. t. xvi. f. 23) = 

 Wright, Cuba, 27 ; Spruce, Amaz. 29. 



In my herbarium are also specimens from Hong Kong (Mr. 

 Wilford) and New Granada (Mr. Blagborne) . 



Var. Dilleniana, Flk. (Dill. t. xvi. f. 23) = Wright, Cuba, 

 34, 35. 



The reaction here is peculiar, being, as Dr. Nylander remarks 

 (m litt.), " thallus (vel podetiorum cortex) hydrate kalico fere, 

 mox dilute fuscescens," as is the case also in C. furcata and C. 

 calycantha. In the var. Dilleniana I should mention that the 

 podetia exhibit no reaction, whilst the folioles become slightly 

 tinged with yellow, which dries into a pale tawny colour. 



