—39— 



This species seems to be most closely related to F. Bolanderi, but that has a 

 well-developed outer peristome, the leaf-cells rather larger and more lax and the 

 costa vanishing far below the apex of leaf. 



Explanation of Plate IV 



1. Brachymenium macrocarpum, nat. 



size. 



2. Capsule X 6 diam. 



3. Inner perichaetial leaf x 20. 



4. Branch-leaf x 40. 



5. Outer perichaetial leaf x 20. 



6. Peristome x 270. 



7. Median leaf-cells x 130. 



8. Apex of upper stem-leaf x 130. 



9. Margin about half-way down leaf 



X 130. 



New York Botanical Garden. 



10. Funaria ruhiginosa, nat. size. 



11. Part of lower lid x 100. 



12. Peristome x 100. 



13. Perichaetial leaf x 12. 



14. Middle stem-leaf x 12. 



15. Part of upper capsule showing 



transverse cells at rim x 100. 



16. Apex of perichaetial leaf x 100. 



17. Capsule after opening X 5. 



18. Capsule with lid x 5. 



19. Calyptra x 5. 



FLORIDA LICHENS 



G. K. Merrill 



The Lichens here listed, excepting two, are new to the flora of Florida, and 

 six of them appear to be unreported from other sections of the United States. 

 Most of the plants were collected by Mr. S. Rapp, of Sanford. Mr. Rapp is 

 thoroughly well versed in the botany of his region, and to his keen-eyed search- 

 ing, the new Lichen Flora of Florida will be overwhelmingly indebted. 



Sticta {Ricasolia) dissecta Ach. Method, p. 279. 



On various trees in company with S. erosa. Sanford, Fla. S. Rapp. 



Plant small, but perfectly in agreement with the species. Exciple crenate 

 or leafy-crenate and incurved. Thallus minutely scrobiculate. 



S. dissecta forma corrosa (Ach.) Merrill, Lichenes Exsiccati No. 42. 



With the foregoing. 



Margins and surface of the thallus here and there leafy-dissected. Thallus 

 beneath very characteristic. Both the above new to Florida and probably to 

 the United States. 



Physcia (Pseudophyscia) speciosa var. minor, var. nov. 



Thallus rather small (5-7 cm.) adnate, glaucous, glaucescent or fusco- 

 glaucous, laciniate, the divisions rather radiant, linear, much divided, borders 

 irregular or dentate, all the axils rounded, tips of the liciniae palmate and with 

 crenate margins, more or less sorediate throughout on upturned margins of the 

 laciniae; beneath as in the species, but with a greater development of rhizoids. 

 Without apothecia in the specimens examined. 



On various trees. Sanford, S. Rapp; Daytona and St. Augustine, G. K. 

 Merrill; South Carolina, Dr. Green. 



