Palmella.] ALG/E GLOIOCLADE,£. 097 



an inch and a half in diameter, flattish, somewhat orbicular, between 

 coriaceous and gelatinous, when dry almost horny, of a deep but dull 

 purple colour, much lobed and curled, like some Gyrophoree, filled with 

 crowded clusters of granules, which, if minutely examined, are found 

 to be mostly arranged in fours. Hook. 



** Granules globose. 



5. P. hyalina, Lyngb. (green pellucid Palmella) ; " frond 

 globose or somewhat elongated pellucid green, the granules 



globose green." Grev. — Lyngb. Hydroph. Dan. t. 69 Grev. 



Crypt. Fl. t. 247. — (8. muscicola; (Carni.) "frond of no deter- 

 minate figure, spreading over mosses, of the same pale-green 

 colour as the aquatic variety." — Carm. MSS. 



In fresh-water streams, &c, Pentland hills, Dr. Greville. Appin, in 

 stagnant water, Capt. Carmichael. — " The gelatinous mass, scarcely de- 

 serving the name of frond, is quite shapeless. Its colour is owing to the 

 granules, which are mostly solitary, but sometimes approximated in pairs 

 or fours." Carm. MSS. 



6. P. rupestris, Lyngb. (yellowish Bock Palmella); frond 

 shapeless rugose yellowish-olive, granules globose associated in 

 fours (sometimes scattered). — Lyngb. Hydroph. Dan. t. 69. 

 Ag. Syst. Alg. p. 13. 



On moist, overhanging cliffs. Appin, Captain Carmichael. — " It oc- 

 curs as a dirty-yellowish gelatinous crust, often hanging down in flakes 

 from the face of the rock. The granules, in my specimens, are mostly 

 solitary, with a dot in the centre ; but every thing connected with these 

 imperfect, not to say doubtful, vegetables, is liable to the widest varia- 

 tions." Carm. MSS. 



7. P. rivuldris, Carm. (bright-green River Palmella); fronds 

 adnate hemispherical tuberculose often confluent bright-green, 

 granules small globose scattered. 



" In a mountain-streamlet, attached to the rocks and stones ;" Appin, 

 Captain Carmichael. — " Fronds one-fourth to half an inch in diameter, 

 hemispherical, tubercular, firmly adhering, sometimes cohering into a 



broad crust. Gr/iiu/es small, globular, scattered. Colour vivid-green. 

 It bears a striking resemblance to Chcstofhora tuberculosa." Carm. MSS, 



8. P. Iiriihi. ('arm. (hhuhish Palmclln); widely iiHrustin^, 

 frendl polymorphous lobed granulated livid, granules globose 

 small. 



" On overhanging clifis, covering them to an indefinite extent with a 

 dirty black •curt," Captain Carmichael*— M Frondt of an indeterminate 

 form, lobed and granulated on the Burface, of a livid gray colour and 



filled with exceedingly small granules." ('firm. MSS. 



!>. P. grumdtOi Cano. (do tied red Pakneila); frond vridelj 



expanded dotted briek-red ftoatillg, granule- gloOOM r.d, here 



and there aggregated. 



" ( )n a rock at the -ea->ide, in a -mall eavity filled with rain-w ater, at 



Appin," Capi, Carmichael. — " Tub species forms ■ clotted gelatinous 



maSS, upwards of a loot in diameter ami half an inch thick, of' ,i briek - 



