319 
GENUS 121. ©EXcIPULA. F7,* 
Perithecia delicate, hispid, open above. Spores hyaline, atte- 
nuated, not appendiculate. 
1.—Excipula, strigosa Fr., on carex. Spye Park, and on dead 
grasses. Rudlow, &c. Corda Icones iii., figure 78. 
2.—Excipula chetostroma B and Br. A. N. H., No. 445, with a 
figure. On old ash keys, Bristol. 
3.—Excipula fusispora B and Br. A. N. H., No. 814, with a 
figure. On Clematis, Vitalba, Batheaston. Three out of 
four British. 
GENUS 122. DINEMASPORIUM. Lév.t+ 
Perithecia open above, delicate, hispid. Spores hyaline, aris- 
tate at either end. 
1.—Dinemasporium graminum Zév. on dead grasses, Batheaston. 
Lév., Ana. Scien. Nat., 1846, p. 274. Corda Icones iii., 
figure 79 ; the only species. 
GENUS 123. MyxoRMIA. B and Br.} 
Perithecium composed of flocci, with free apices, open above. 
Spores concatenate, involved in gelatine. 
1.—Myxormia atro-viridis B and Br., on dead grass (aira coespi- 
tosa), Batheaston. A. N. H., No. 447, with a figure. The 
only species. 
GENUS 124. PROSTHEMIUM. Kze.§ 
Perithecia carbonaceous. Spores fasciculate, fusiform, septate, 
attached to articulated threads. 
* Excipula, from excipulus, a vessel. 
+ Dinemasporium, from dis twice, and nema a thread. 
{ Myxormia, from myxa, slime and orme a tendency. 
§ Prosthemium, from prosthema, the spores being, as it were, appiied to 
the threads. 
