Part 1, 1910] HYPOCREACEAE 49 
Sclerotia formed in the bodies of insects or larvae. 
Stromata large, several cm. high. 
Occurring on larvae or pupae. 
Head fertile to the tip. * 
Head clavate. 
Stromata bright-orange ; on pupae. 1. C. militaris. 
Stromata brownish; on larvae. 
Spore-segments short, 1.5 long. 2. C. palustris. 
Spore-segments long, 3-5 # long. 
Plants stout ; spore-segments 4-5 /. 3. C. Ravenelii. 
Plants slender; spore-segments 3.5. 4. C. acicularis. 
Head globose or subglobose. 
Plants purplish. 5. C. insignis. 
Plants yellowish. 
Spore-segments 44 long. 6. C. flavella. 
_ Spore-segments 6-8 4 long. 7. C. entomorrhiza,. 
Head with a sterile apex. 
Plants stout, yellowish ; on white grubs. 8. C. herculea. 
Plants slender, brownish ; on larvae. 9. C. stylophora. 
Occurring on adult insects (wasps). 10. C. sphecocephala. 
Stromata less than 1 cm. high. 
Perithecia collected into a definite head, immersed. 
Spores much shorter than the ascus, fusoid; on scale-insects. ll. C. clavulata. 
Spores nearly as long as the ascus, filiform ; not on scale-insects. 
Plants 3 mm. high, reddish-purple. : 12. C. Langloisit. 
Plants 5-9 mm. high, yellowish. 13. C. armeniaca. 
Perithecia scattered, becoming subsuperficial. 
Stromata very long and slender, 5 em. high. 14. C. Sphingum. 
Stromata 1 cm. or less high. 
Stromata effuse or erect; perithecia becoming spatulate when 
ry. 15. C. Cockereliiz, 
Stromata erect ; perithecia flask-shaped. 16. C. dsariotdes. 
Sclerotia formed in fungi. 
Stromata agariciform. 17. C. agariciformia. 
Stromata clavate. 18. C. parasitica. 
1. Cordyceps militaris (1,.)Link, Handb. 3: 347. 1833. 
Clavaria militaris L. Sp. Pl. 1182. 1753. 
Ramaria farinosa Holmsk. Danske Vid.-Selsk. Skr. II. 1: 299. 1781. 
Clavaria granulosa Bull. Herb. Fr. pl. 496, f. J. 1790. 
Clavaria farinosa Dicks. Pl. Crypt. Brit. 2: 25. 1790. 
Lsaria farinosa Fries, Syst. Myc. 3: 271. 1832. 
Kentrosporium militare Wallr. Beitr. Bot. 166. 1844. 
Torrubia miliiaris Tul. Fung. Carp. 3: 6. 1865. 
Sclerotia formed in the pupae of insects, compact, white; conidial phase rising from 
the sclerotium, consisting of a slender stalk, and a white, floccose, feather-like head ; stem 
slender, very variable in length and diameter, often externally whitish; head at first 
with numerous delicate conidial branches, giving the whole a powdery appearance; 
stromata at maturity consisting of a sterile stem and fertile, clavate head, usually simple 
but rarely forked or branched, the whole often attaining a height of 4-5 cm., often much 
shorter, bright-orange ; perithecia thickly scattered or crowded, for the most part immersed 
with the necks protruding, or subsuperficial (especially in weathered specimens); asci cyl- 
indric; spores filiform, nearly as long as the ascus, many-septate, breaking apart at the 
septa, giving rise to numerous subellipsoid segments 2-3 « long. 
On pupae buried or partially buried in the ground. 
TYPE LOCALITY: Europe. eae . 
DISTRIBUTION: Massachusetts to North Dakota and Virginia; also in Europe. : 
ILLUSTRATIONS: Bull. Herb. Fr. p/. 496, f. 1; Fl. Dan. p/. 657, f. 1; Sow. Engl. Fungi /. 
60; pl. 308. 
2. Cordyceps palustris Berk. & Br.; Berk. Jour. 
Linn. Soc. 1: 159. 1857. 
Stromata 1-3 em. high; stem 3-4 mm. thick, simple or divided into 24 short branch- 
lets, even, smooth, brown; head 1-2 cm. long, thicker than the stem, cylindric-ovoid, dull 
brownish-purple or flesh-colored, minutely rough with the slightly protruding necks of the 
perithecia; asci elongate, narrowly cylindric, capitate, tapering below into a long, slender 
pedicel ; spores arranged in a parallel fascicle, slightly curved, filiform, hyaline, becoming 
many-septate, 100-120 K 1, the segments 1.5 # long. 
