82 NORTH AMERICAN SORDARIACEAE 
and complexity of the secondary appendages. Their true char- 
acter is liable to be entirely overlooked in the dried specimens. The 
asci are also so fugaceous that it is next to impossible to remove 
one with perfectly mature spores from the perithecium. Theaccom- 
panying illustrations and measurements were made from asci in 
which the spores were, in the olive-green stage for reasons stated 
above. 
21. PLEURAGE DECIPIENS (Wint.) Kuntze, Rev. Gen. Plant. 3°: 
505. 1808 
. Sordaria decipiens Wint. Abhand. naturforsch. Gesell. zu 
Halle, 13: 95. pl. 9. f. 16. 1873; Fuckel, Symb. Mycol. Ap- 
pend. 2: 44. ۸ r. f. 33. 1873; Cohn's Krypt.-Flora Schles- 
ien, 3°: 287. 1894; Schenk, Handbuch der Bot. 4: 362. f. ۰ 
1890; Sacc. Syll Fung. 1: 235. 1882; Naturhist. Forening 
Kjobenhaven Vidensk. Middelelser for Aarene, 342, 352. pl 7. f. 
25—26. 1876. 
Eusordaria decipiens (Wint.) Zopf, Zeitschrift gesammt. Natur- 
wiss. 56: 542 Pl. 6. f. 20-22. 1883. 
Podospora decipiens (Wint.) Rehm ; Rabenhorst, Kryptogamen- 
Flora, 1*: 173. f. 7-3. : 1887. 
Perithecia pyriform, sunken in the substratum, scattered, 300- 
4504 x 575-750"; walls thin, membranaceous, black above and 
greenish below, often so transparent that the asci and spores can 
be indistinctly seen by transmitted light; beak moderately long, 
straight or curved, and often roughened above by a few short 
papillae ; rhizoids abundant and extending up to the projecting 
usually curved black beak. 
Asci 8-spored, clavate, rounded above and contracted below 
into a pedicel of medium length, evanescent, 40-55 بر‎ x 180- 
240 :م‎ paraphyses long, ventricose, septate, agglutinated, abundant, 
but not much mixed with the asci. 
Spores biseriate, ellipsoid to ovate, slightly wider below the mid- 
dle, 20-24 4 x 38-54y; color ranging from hyaline when young 
through olivaceous to dark brown and opaque : germinal pore large, 
apical and eccentric ; lower end of spore terminated by a long cylin- 
drical primary appendage, I-1.5 times the length of the spore; 
the base of this appendage being surrounded by short gelatinous 
secondary appendages, while the apex of the spore is crowned by 
a lyre-shaped tuft of similar consistency. (Pl. 9. f. 70-13.) 
Distinctive character: The spore appendages. 
