208 



Mycologia 



at first (Isaria stage) often delicate, producing conidia, later 

 usually clavate, producing perithecia, which are more or less im- 

 mersed or more rarely subsuperficial, collected into a globose, 

 clavate, or agariciform head supported by a sterile stem, or some- 

 times surmounted by a sterile apex ; asci cylindric, 8-spored ; 

 spores filiform or subfiliform, many-septate and often breaking 

 into segments in the ascus, or more rarely simple and entire. 

 Type species, Clavaria militaris L. 



Sclerotia formed in the bodies of insects or larvae. 



Perithecia collected into a definite, enlarged head, 

 usually immersed. 

 Stromata large, several cm. high. 

 Occurring on larvae or pupae. 

 Head fertile to the tip. 

 Head clavate. 



Stromata bright-orange ; on 

 pupae. 



Stromata brownish ; on larvae. 

 Spore segments short, 1.5 



mic. in length. 

 Spore segments long, 3-5 

 mic. in length. 

 Plants stout ; spore 

 segments 4-5 mic. 

 in length. 

 Plants slender ; spore 

 segments 3.5 mic. 

 in length. 

 Head globose or subglobose. 

 Plants purplish. 

 Plants yellowish. 



Spore segments 4 mic. in 



length. 

 Spore segments 6-8 mic. 

 in length. 

 Head with a sterile apex. 



Plants stout, yellowish ; on white 

 grubs. 



Plants slender, brownish ; on 

 larvae. 



Occurring on adult insects (wasps). 

 Stromata small, less than 1 cm. high. 



Spores much shorter than the ascus, fusoid ; 



on scale-insects. 

 Spores nearly as long as the ascus, filiform ; 

 not on scale-insects. 

 Plants 3 mm. high, reddish-purple. 

 Plants 5-9 mm. high, yellowish. 



1. C. militaris. 



2. C. palustris. 



3. C. Ravenelii. 



4. C. acicularis. 



5. C. insignis. 



6. C. flavella. 



7. C. entomorrhiza. 



8. C. herculea. 



9. C. stylophora. 



10. C. sphecocephala. 



11. C. clavulata. 



12. C. Langloisii. 



13. C. armeniaca. 



