494 



Bulletin 315 



Fig. 127. — Spicaria simplicissima 

 Olid. A, conidiophores and conid- 

 ial fructification, x 2j6.6; B, same swollen 

 enlarged, x 533.3; C, chlamydo- 

 spores, X 333.3 



Hab. Isolated from humous soil from Bussum, Holland, September, 

 1903, Koning; from soil of plant-breeding plats, Cornell University, 



Ithaca, N. Y., in November, 19 10, and 

 January, 191 1, also from potato tubers. 

 Plant pathology herbarium No. 5,921. 



Naematogonium humicola Oud., Arch. 

 Neerl. Sci. Nat. ser. 2, 7: 288. pi. 23, 

 figs. I- J. 1902. Nederl. Kruidk. Arch, 

 ser. 3, 2: 905. 1903. Lindau, Rab. 

 Krypt. Flora Abt. 8, i: 360. 1907. 



Colonies orbicular, velvety, at first 

 white, later light green, finally cream- 

 colored (Sacc. Chromot. No. 27); conidio- 

 phores ascending, 2.2-3.3^1 thick, hyaline, 

 septate, unbranched, consisting of perfectly 

 cylindrical long cells alternating with 

 shorter, fertile cells; conidia 

 sessile, globose, 3-4/x in diameter, or 

 ellipsoidal 3-6 by 2-4 n, almost h^^aline. 

 Hab. Isolated from pulverized hiimous soil from woods called Span- 

 derswoud near Bussum, Holland, June, 1901, Koning. 

 Trichothecium roseum Link, Mag. Gesell. Naturf. Fr. Berlins: iS. fig. 



27. 1809. 



Syn. Puccinia rosea Corda, Icon. Fung, i: 6. fig. q8. 1837. 



Dactylium roseum Berk. Lambotte, Fl. ]\Iyc. Belg. 3: 244. 1880. 

 Cephalothecium roseum Corda, Icon. Fung. 2: 14. ^g. 62. 1838. 

 Cephalothecium candidum Bonord., Handb. Allg. Myk., %i. fig. 8g. 1851. 



Colonies forming a powdery or velvety covering, wide-spreading, mold- 

 like or cobwebby, at first white, later rose-red; vegetative hyphas septate, 

 branched, 1.5-6/1; conidiophores erect, sparsely or 

 nonseptate, mostly unbranched, 200-500 by 3-3. 5m J 

 conidia acrogenous, produced singly one after the other, 

 adhering to the upper part of the conidiophore to form 

 a loose head, pyrifomi, two-celled, slightly constricted at 

 septum, at first hyaline, later rose, 12-22 by 8-13/x. 



Hab. Isolated from soil of plant-breeding plats, 



also from oat field in autumn and spring, Cornell 



University, Ithaca, N. Y., 1910-1911, by the writer. 



Plant pathology herbariiim No. 5,922. 



Mycogone nigra (Morgan). 

 Syn. Monotospora nigra Morgan, New North American Fungi. Jour. Cincinnati 

 Soc. Nat. Hist. 18: 44. pi. 3, fig. 20. 1895. 



Colonies at first hyaline, later showing yellowish tint, and finally becom- 

 ing black-brown and zonate. In rapidly growing colonies, the hyphaj 



Fig. 128. — Tri- 

 chothecium rose- 

 iimLink. Conid- 

 iophore and 

 conidia, x 236.6 



