Part 1, 1910] NECTRIACEAE 19 
stroma; asci cylindric or clavate, mostly 8-spored, with the spores occasionally accom- 
panied by numerous other minute spore-like bodies in the ascus; spores 1-2-seriate or 
irregularly crowded, ellipsoid to fusoid, straight or curved, 1-septate, hyaline; paraphyses 
present or not evident. 
Type species, Tremella purpurea L. 
Perithecia some shade of red, scarlet, brick-red, or brownish-black. 
Perithecia dull brick-red, becoming brown or black with age. 
Ascospores not accompanied by spore-like bodies in the ascus. 
Perithecia verrucose, covered with coarse granules. 
Stromata tubercular, prominent. 1. C. purpurea. 
Stromata concave, not rising above the surface of the sub- 
_ Stratum. 2. C. verrucosa. 
Perithecia smooth or only minutely rough, becoming black 
with age. 3. C. atrofusca. 
Ascospores accompanied by minute spore-like bodies in the ascus. 4. C. Coryli, 
Perithecia scarlet or blood-red, becoming reddish-purple with age. 
Spores ellipsoid or subellipsoid, with ends obtuse. 
Perithecia collapsing with age. 
Perithecia becoming truncate. 
Perithecia becoming pezizoid when collapsed. 
Perithecia entire; ostiolum very prominent. 
Spores fusoid, with ends acute or subacute. 
Spores narrow-fusoid, 3 times as long as broad. 
Spores broad-fusoid, twice as long as broad. 
Spores comparatively small, not more than 16 # long. 
C. pithoides. 
C. rubicarpa. 
C. mammoidea,. 
Cc. 
eo NNN 
. coccinea. 
Perithecia vertically collapsing; on Diatrypella. 9. C. nipigonensis. 
Perithecia mostly entire; on coniferous wood. 10. C. Cucurbtitula. 
Spores comparatively large, 20-25 # long. 11. C. diploa. 
Perithecia pale-red or some shade of yellow or yellowish-white. 
Stromata soft, floccose; perithecia cespitose on the stroma. 
Perithecia strongly verrucose ; conidial phase a Fusarium. 12. C. Ipomoeae. 
Perithecia not strongly verrucose. 
Conidial phase a Verticilium, 
Spores 12-14 x 54; on cacao pods. 13. C. Bainiz. 
Spores 8-12 x 3-4 #; on bark, decaying seeds, etc. 
Stromata tubercular; on bark. 14. C. ochroleuca. 
Stromata effuse ; on decaying seeds. 15. C. seminicola. 
Conidial phase uncertain ; on bark. 16. C. grammicospora. 
Stromata hard, tubercular; perithecia scattered over their surface. 17. C. tuberculariformis. 
1. Creonectria purpurea (1,.) Seaver, Mycologia 1: 184. 1909. 
Neciria cinnabarina Fries, Summa Veg. Scand. 388. 1849. 
Nectria Russelldi Berk, & Curt.; Berk. Grevillea4: 45. 1875. 
Nectria offuscata Berk. & Curt.; Berk. Grevillea 4: 45. 1875. 
Nectria nigrescens Cooke, Grevillea7: 50. 1878. 
Nectria Sambuci Ellis & Ev. Proc. Acad. Phila. 1890: 246. 1890. 
Nectria Meliae Earle, Bull, Torrey Club 25: 364. 1898. 
Neciria purpurea Wilson & Seaver, Jour. Myc. 13: 51. 1907. 
Stromata erumpent, tubercular, at first pinkish or yellowish-red, becoming darker with 
age, often brownish and occasionally quite black, 1-2 mm. in diameter and 1-2 mm. high ; 
conidiophores 50-1004 long with short lateral branches on which the conidia are borne ; 
conidia 4-6 X24, ellipsoid, hyaline; perithecia springing at first from the base of the 
stroma, which at maturity is concealed by the cespitose clusters of perithecia; individual 
perithecia nearly globose, with the ostiolum rather prominent, becoming slightly collapsed, 
at first bright cinnabar-red, becoming darker with age, often brown and occasionally black 
(when weathered), roughened externally with coarse granules 375-400 in diameter ; asci 
clavate, 50-90 X 7-12 #, 8-spored; spores mostly 2-seriate, ellipsoid, elongate, about 3 times 
as long as broad, with obtuse ends, 1-septate, hyaline, mostly a little curved, 12-20 X 
4-6; paraphyses very delicate. 
On bark of various kinds of deciduous trees and shrubs, of many different families, 
TYPE LOCALITY: Europe. . ; 
DISTRIBUTION: Maine to California and South Carolina, probably common throughout North 
America; also in Europe. 
