17 

 STICTA MACROPHYLLA. 



Cryptogamia Lichenes. Nat. Ord. Lichenes. 



Gen. Char. Apothecia scutelliformia, subtus e thallo formata, centro 

 affixa. Discus coloratus, planus. Thallus foliaceus, coriaceo- 

 cartilagineus, expansus, lobatus, subtus liber us villosus vel tomen- 

 tosus, cyphellis sorediis vel maculis interspersis. 



Sticta macropliylla ; effusa, thallo subcartilagineo crassiusculo lurido- 

 virescente siccitate cinerascente glabro repetitim dicliotomo seg- 

 mentis latis undulatis obtusissimis, subtus fusco-tonientoso, cyphel- 

 lis albis limbatis, apotheciis fuscis extus tomentosis. 



a. apotheciis sparsis. 



Sticta macrophylla (Delis). Fee Crypt, des Ecorces, p. 129. t. 33.* 

 Spreng. Syst. Veget. v. 4. p. 303. 



|3. apotheciis marginalibus. (Tab. XIII.) 



Hab. Arboribus Insulae Mauritii. D. Bojer. Insula Franciac; et in 

 variis regionibus Americse Meridionalis, supra ramos annosos 

 Cinchonarum peruvianarum. Fee. 



Thallus late efFusus, diametro spithamaeus et ultra, suborbiculari-ex- 

 pansus, laciniato-lobatus, imbricatus, laciniis liberis repetitim 

 dichotome divisis, segmentis latis, subundulatis, obtusissimis; supra 

 omnino glaber, leevis, absque sorediis, madore lurido- vel subfusco- 

 viridis, siccitate pallide gi'iseus vel cinerascens, ad marginem fiis- 

 cescens : subtus ubique f usco-tomentosus, ad marginem pallidior. 

 CypliellcB numerosae, urceolatae, albae, limbatae vel marginatae. 

 Substantia subcartilaginea, siccitate rigiila, madefacta magis flac- 

 cida. Odor fere ut in Sticta fuliginosa Europac. Apothecia pri- 

 mum globosa, demum explanata, compressa, fusca, disco piano, 

 subtus margineque tenui tomentosa, in a sparsa, in /3 omnino mar- 

 ginalia. 



I WAS prepared to publish this noble species of Sticta, 

 which I had received from the Mauritius more than two years 



* It is called M. macrocarpa in the text ; but that name is not applicable to 

 the plant, nor is it followed in the index, or on the plate. Sprengel, too, calls 

 it macrocarpa. 



VOL. I. . C 



