202 PACHYMA COCOS. 



iseo. P. Conifemrum, Horaninow in litt. 



Sclerotium Cocos, Schweinitz, Synopsis Fangorum Carolines 

 Superioris, in Act. Societatis Naturae Scrutatorum Lipsiensis, 

 torn. i. (1822) p. 56. 



Lycoperdon cervinum, Walter, Flora Caroliniana (1788), p. 262. 



L. solidum, Gronovius, Flora Virginica (1762), p. 176. Mac- 

 bride, Linn. Trans, vol. xii. (1818) p. 368. 



Tubera Terrce- maxima, externe pidla et scabra, intus Candida, 

 Gronovius, Flora Virginica (1743) pars ii. p. 205. 



Indian Bread or Tuckahoe, M. J. B. in Gardeners' Chronicle, 16 

 Dec. 1848. 



P%-f8-lim, Cleyer, Specimen Medicines Sinicce (1682), Med. 

 Simp. ISTo. 189. 



(Fuli-ling vel Foo-ling), Pun-tsaou-kang-rnuh, cap. 

 xxxvii. sect. 4 (cum icone). 



Fine specimens of this production, received many years since 

 from Dr. Macbride of South Carolina, and described by him in 

 the 12th volume of the Linnean Transactions, under the name 



Lycoperdon o f Lycoperdon solidum, are to be seen in the Museum of the 

 Society ; and one of the most characteristic of these specimens 

 is represented in PL X. Fig. 5. PL X. Fig. 6 represents a longi- 

 tudinal section of a very similar specimen, and is interesting 

 as exhibiting very completely the manner in which the root has 

 been affected by the Pacliyma. Dr. Macbride states that the 

 Pachyma originates between the wood and bark of living roots, 

 that it gradually detaches the bark, while it spreads round the 

 wood and converts it into a substance similar to itself. The 

 present section, however, exhibits an intermediate condition ; 

 for, although the bark is detached and the Pachyma interpolated 

 between it and the wood, a great part of the wood itself is but 



Description of little affected. The portion referred to by the letter a retains 

 te ' its natural colour and appearance ; and when examined in section 

 under the microscope, is found to consist of healthy woody 

 tissue in an almost perfect state. This portion, when looked at 

 with a lens, or even with the naked eye, may be seen to be 

 traversed by narrow longitudinal white streaks, which the micro- 

 scope shows to be very similar in composition to the part marked 

 b, next described. This part (b) to the naked eye looks like 



