Sept., 1887.] 
NORTH AMERICAN XYLARIA AND PORONIA 
99 
b. Capitulum subclavate; ste7ii thick , abbreviated or obsolete. 
7. Xylaria roLYMORPHA (Peis.) Grev. Flor. Edin., p. 35; Xits- 
chke Pyr. Germ., p. 17 ; Spliceria polymorplia , Pers., Comm., p. 17. 
Stromata fasciculate or tufted, 2—6 connate at base, or more rarely 
solitary, erect, thick, glabrous, dark argillaceous, becoming black, some¬ 
times simple and terete, more or less attenuated at the base and apex, or 
quite obtuse and subcylindrical, or compressed and obovate, or emargin- 
ate, or furcately branched, or sometimes nearly globose, the entire sur¬ 
face—except the very short or nearly obsolete stipe —roughened by the 
slightly prominent, rather large ($—f millim.), ovate, closely-packed 
perithecia; asci cylindrical, with a very long, stipitate, slender base, 
140—180 x 8—10 V- (spore-bearing part 100—120 y long); sporidia uniseri- 
ate, subfusoid or navicular, often more or less curved, subacute at each 
end or rarely obtuse, pale at first, with 1—2 nuclei, soon opaque, 20—30 x 
5—9 y. Around the base of old stumps, etc. Common throughout the 
United States and Canada. 
8. Xylaria Titan, B. & C. Grev. IV, p. 47. 
“Gigantea allantoidea dura, extus albida; ostiolis nigris promi- 
nentibus. Texas, Lindheimer, Xo. 2,676. Five inches long, two i ches 
wide, sausage shaped, convex on one side, hollow on the other, hard, 
solid, dirty-white, stained with the sporidia and dotted with the prom¬ 
inent ostiola.” 
9. Xylaria fulvella, B. & C. Linn. Journ., X, p. 380. 
“Clavata, rubiginosa, papillata; peritheciis semiprominulis, ostiolis 
nigris; stipite cylindrico, pallide fulvo lineato-rugoso (590). On dead 
wood. Alabama (Xo. 4,902). Sporidia oblong, .0003 inch long, closely 
allied to an Australian species, X. phosphoria , B., but differs in the 
absence of the white ring around the ostiolum.” Found also in Cuba. 
c. Capitulum subglobose. 
10. Xylaria cudonia, B. & C. Grev. IV, p. 47. 
On rotten trunks, Santee Canal, So. Ca. (Ravenel.) Appearing some¬ 
what as if varnished ; stipe short (twelve millim. high, four millim. thick) 
dilated above; head hemispheric, twelve millim. in diameter, papillate, 
roughened by the slightly prominent perithecia; ostiola very small. 
Cooke, in Grev. XI, p. 82, states that the sporidia are almond-shaped, 
13 x 8 y. 
11. Xylaria clavulus, B. & C. On decaying culm of some grass 
in Texas. 
u Parva seriata ; stipite brevi, crassiusculo penetrante; capitulo eon- 
vexo.” Saccardo, in Syll. I, p. 323, says: “Stroma about 2—3 millim. 
high, not varnished (laccate) texture rather firm ; a beautiful but minute 
species. 
B. Xylocoryne. Club everywhere fertile; stem villose, 
a. Capitulum clavate ; stem elongated, slender. 
