1911] BROW N—LACHNEA SCUTELLATA 303 
somes by linin fibers in the nucleus. The centrosome divides and 
the daughter centrosomes come to be situated at the poles of the 
spindle. The chromosomes divide transversely. As they approach 
the poles they appear to split longitudinally. The second and 
third divisions in the ascus are similar to those in the ascogonium. 
The spore wall does not appear to be formed by the fusion of 
_astral rays. 
The writer wishes to express his thanks to Professor D. S. 
JoHNson for helpful suggestions and criticisms, to Professor C. B. 
Davenport, Director of the Biological Laboratory of the Brooklyn 
Institute of Arts and Sciences, for courtesies shown him during 
his stay at Cold Spring Harbor, to Mr. L. W. SHarp for help in 
collecting material, and to Dr. F. H. Biopcetr for assistance in 
the preparation of .the photographs. 
MICHIGAN AGRICULTURAL COLLEGE 
East LANsinc, MICHIGAN 
LITERATURE CITED 
I. ALLEN, C. E., Die Keimung der Zygoten bei Coleochaete. Ber. Deutsch. 
Bot. Gesells. 23:285-292. 1905. ‘ 
- Barker, P. T. B., The morphology and a of the ascocarp in 
Miaicne Ann. Botany 1'7:167—-236. 1903. 
- Biacxman, V. H., and Fraser, H. C. I., On the sexuality and develop- 
ment of the aseocatn of Humaria eromalats. Proc. Roy. Soc. London 
77°354-368. 1906. - 
- Brown, W. H., The nature of the embryo sac of Peperomia. Bot. Gaz. 
46: 445-460. fsok, 
. —————. Nuclear a in Pyronema confluens. Johns Hopkins Univ. 
Cir. 6: *42-45. 190 
6. , The ecko of the ascocarp of Leolia. Bot. Gaz. 50:443- 
459. 
Curtinc, E. M., On the sexuality and development of the ascocarp in 
rete carnens Pers. Ann. Botany 23:399-417. 1909. 
5 CLAUSSEN, YF. Zor Kenntnis der Kernverhiltnisse von Pyronema confluens. 
Ber. Deutsch. Bot. Gesells. 25: 586-590. 1907. 
: DANGEarRD, P., Seconde mémoire sur la reproduction sexuelle des Ascomy- 
cétes. Le Botaniste 5:245. 18 
10. ———.. Sur le développement Ae la perithecée chez les Ascomycétes. Le 
Botaniste 10:1. 1907. 
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