454 THALLOPHYTES 



612. MYRIAUPGIUM, Berlc. <j- Mont. 



[Gr. Myrios, innumerable, and Angeion, a vessel, or cell ; descriptive of the plant.] 

 Apothecia, tuberculiform, at first closed, then open, plane, immar- 

 ginate. Hymenium thick, many-celled, each cell containing one 

 spherical ascus. Sporidia oblong, multiseptate. Thallus pulvinate, 

 swelling when wet, unequal, tuberculate. 



1. IH. Curtisii, Mont. [Curtis' a] : Irregular, confluent, dull, 

 blackish. 



Hob. On smaller branches of Hickory, and Sour Gum. 



Obs. Common with us, but considered to be a Southern species. 

 I have received it from the gentleman whose name it bears, from 

 South Carolina. TUCKERMAN remarks, that it is "new to the 

 North." 



613. COULE'MA, Hoffm. 



[Gr. Kolle, gluten; from the gelatinous nature of the plant.] 

 Apotheda subglobose, becoming discoid-open and scuttellaeform, 

 with a thalline exciple. Thallus corneous-gelatinous, somewhat 

 pulpy, of a moniliform-filamentous texture, variously lobed. 



f Thallus imbricate-plicate, becoming thick and turgid when wet. 



! C. pulp5sum 9 Ach. [Pulpy"] : Thallus thick, suborbicular, 

 compact, blackish-green ; lobes numerous, rather erect and entire, 

 or repand-crenate, those of the circumference larger and some- 

 what appressed ; apothecia crowded, slightly concave, rufous, with 

 an elevated irregular margin. 

 Sab. On mos&y rocks; limestone, Ac. 



2. C. fascicillare, Ach. [Fascicled] : Thallus suborbicular, 

 olive-green ; lobes dilated upward, waved, those of the circumfer- 

 ence rounded, cut-crenate ; apothecia marginal, elevated-subpedi- 

 cellate, fasciculate ; disk convex, rufous. 



Hob. On trunks, and rocks. 



f f Thallus thin, foliaceous, gelatinous-membranaceous, lobed principally at the cV- 

 cumference. 



3* ) Hi el aen 11 in, Ach. [Black] : Thallus foliaceous sub- 

 stellate, blackish-green, the lobes elongated, radiant, multifid, with 

 elevated waved and crisped crenate margins ; npothecia submar- 

 ginal, somewhat plane, at length rufescent, with a subgranulate 

 margin. 

 Hob. On mossy rocks, and trunks. 



4. C. flaccidum, Ach. [Flaccid] : Thallus foliaceous, mem- 

 branaceous, smooth, flaccid, blackish-green; lobes somewhat ascend- 

 ing, rounded, rather entire, undulate-plicate ; apothecia small, 

 scattered, somewhat plane, rufous. 

 Hob. On rocks, and trunks. 



Obs. A conspicuously foliaceous species, which often presents a 

 radiate or centrifugal appearance. 



