212 Atkinson. — A Monograph of the 
I have a microscopic mount of such a preparation in my 
possession. 
In the cases where the terminal cell of the procarp produces 
a sexual shoot it is impossible to tell whether it is before or 
after fertilization. If after fertilization it would be a case of 
apospory ; if before fertilization it would be a case of apogamyh 
By far the greater number of cases of abnormal branching 
come under the head of apogamy, where the procarp, or 
generative filament, produces either one of the three forms of 
the oophyte. In this connection it seems interesting as indi- 
cating that the procarp of the Lemaneaceae is a modified main 
branch of the sexual shoot. 
In view of these facts I am led to believe that Bornemann 1 2 
mistook similar cases for what he thought was the develop- 
ment of the Chantransia - form and young sexual shoots from 
the cortex of the main sexual shoot. 
LIST OF WORKS CONSULTED. 
Adanson, M. — Families d. Plantes, ii. Paris, 1863. 
Agardh , C. A. — Species Alg. Gryphiae, pp. 1-8, 1824-28. 
Bornemann. — Beitrage z. Kenntniss d. Lemaneaceen. Berlin, 1887. 
Bory. — Sur 1. genre Lemanea, etc., Ann. d. Mus. Hist. Nat. Paris, 1808. 
Bozver. — On some Normal and Abnormal Developments in Trichomanes , Ann. 
Bot. vol. i. No. 3. pp. 269-305. Oxford, 1888. 
Braun. — Verjiingung der Natur. Freiburg, p. 184. 
Dame and Collins. — Middlesex Flora. Malden, Mass. 1888. 
De Candolle. — Flore Fran5aise, vi. Paris, 1805. 
Desveaux, N. ^.—Journal Bot. i. pp. 1 21-124, J 43 > t 8°8. 
Farlow , W. G. — Marine Alg. N. E. 1881. 
Goebel. — Outlines of Class, and Special Morph. Oxford, 1887. 
Harvey. — Nereis Bor. Am. iii. pp. 66-6 7, Smithsonian Cont., vol. x. 1857. 
Hassall. — British Fresh Wat. Alg. London, pp. 68-74, 1845. 
Ketel. — Anat. Untersuch. liber Lemanea. Berlin, 1886. 
Kirchner. — Die Mikr. Pfl. d. Susswas. 1884. 
1 See Bower, On some Normal and Abnormal Developments of the Oophyte in 
Trichomanes. Annals of Bot. vol. i. No. 3. pp. 269-305, Oxford, 1888. 
a Beitrage z. Kenntniss der Lemaneaceen, 1887. 
