40 
JOURNAL OF MYCOLOGY. 
[Vor, IV, Nos. 4, 5, 
Nebraska (Miss L. S. Dond). Stroma depressed-globose, 5—15 mm. across, 
light brick-red, nearly smooth but closely punctate by the minute black 
ostiola, solitary or subcontinent; perithecia peripheric, monostichous, 
minute, ovate, I—i mm. high; asci (spore-bearing part) 45—50 x5 /'•, with 
a slender, thread-like base, 35 long; sporidia uniseriate, opaque, subin- 
equilateral-elliptical, 6—7 x 3—3£ /■>■. The substance of the stroma is of a 
blue-black color, and a vertical section shows a radiate fibrous structure 
with one or two faint concentric zones. The interior of the stroma in 
II coccineum is homogeneous in structure and of an even gray-black 
color. Shat species is also distinguished from this by its smaller stroma, 
roughened by the slightly projecting perithecia (i —I mm. in diameter) and 
by larger asci and sporidia. In the Nebraska specimens the perithecia 
are distinctly prominent, but in other respects they do not differ from the 
normal form. 
IXypoxylon commutatum, Nitschke, var. IIolwayanum, S. &E.— 
Mich., II, p. 570 ; Sacc. Syll,, II, XXV, Addenda. On bark of dead oak. 
Decorah, la., and on bark of dead plum trees and (maple [?]), Vermilion 
Lake, Minn. (Ilolway). Stroma erumpent-superficial, solitary or subcon¬ 
tinent, subglobose, hemispherical or oblong, I—£ cm. across, dull purplish- 
red, becoming black, grayish-black within, roughened by the distinctly 
prominent, ovate, monostichous, £ x } mm. perithecia; asci (spore-bearing 
part) 75—80 x 6—7 /-*, with abundant paraphyses; sporidia uniseriate, 
opaque, inequilateral-elliptical, 10—12 x 41—51 /->■. According to Saccardo, 
the perithecia are larger and more prominent than in the typical form, 
which is described by Nitschke as having the stroma pulvinate, depressed, 
rarely hemispherical or nearly globose, solitary or connate with globose, 
crowded, subdistichous peripheric perithecia and sporidia, 10—12 x 6 /*. 
The smaller stromata resemble those of H.fuscum, from which it is dis¬ 
tinguished by its smaller sporidia. From II. multiforme it is distin¬ 
guished by its larger, darker sporidia. 
IIypoxylox enteromelum (Schw .)— Splicer i a enteromela, Scliw., 
Journ. Acad. Philada., Vol. V, p. 10. Erumpent from cracks in the 
bark of dead chestnut trees, Bethlehem, Pa. (Scliw.). Bather rare. Stro¬ 
mata pulvinate, often longitudinally confluent for 6 inches in length, 
rusty red, surface not granulated, variable in shape, subcompressed, very 
black (within), covered above with a furfuraceous, pulverulent, rust- 
colored bark. Immersed in the stroma are a few perithecia of larger 
size, the others being minute, peripheric, globose and black. The stroma 
stains the inner bark black. In the nature of the outer layer of the 
stroma this is allied to 11. coccineum. Sec. Cooke in Grev., XI, p. 123, the 
sporidia are 10 x 4 P-. 
IIypoxylon Vera Cructs, Berk. & Cke.— Grev. XI, p. 129. On 
rotten wood, Vera Cruz (Salle). Subglobose, superficial, often confluent 
(1—2 cm. in diameter), bright rust color, sooty black within ; perithecia 
of medium size, ovate, peripheric, somewhat prominent; asci cylindrical; 
sporidia elliptical, attenuated at each end, brown, 20 x 8 p. 
