Vol. 37 No 3 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
MARCH, tgto 
The morphology of Taenioma 
ELIZABETH ILSLEY THOMPSON 
(WITH PLATES 9 AND I0) 
The work here described was done in the Botanical Laboratory 
of Barnard College, Columbia University, under the direction of 
Professor H. M. Richards, for whose kindly interest and assistance, 
as well as that of Dr. T. E. Hazen, I wish to express my deep ap- 
preciation. Iam greatly indebted also to Dr. M. A. Howe of the 
New York Botanical Garden, through whose kindness the material 
has been available for this work. The material used was col- 
lected by Dr. Howe on two of his southern trips and was pre- 
served with the aid of formaldehyde as well as by drying. The 
fertile plants, possessing all the kinds of reproductive organs, were 
obtained in Porto Rico in 1903; sterile (rarely tetrasporic) plants 
were collected in the Bahamas (West Caicos) in 1907. 
It is not the purpose here to determine the species to which 
these two plants belong. There are minor differences between 
them. The plant from Porto Rico (antheridial, cystocarpic, and 
tetrasporic) appears larger, is dark violet in color, less secundly 
branched, and the short flattened shoots are longer, sometimes 15— 
30 segments in length, are more closely and more conspicuously 
fasciculate or even fastigiate, and are prolonged into three hairs ; 
while the plant from the Bahamas (sterile or rarely tetrasporic) is 
smaller, reddish purple in color, the branches are apparently more 
secund and the short flattened shoots, 9-15 segments in length, are 
prolonged into two hairs. In spite of these differences there seems 
little reason to doubt that both of these plants belong to the spe- 
[The BuLLeTIN for February, 1910 (37: 51-96), was issued 5 Mr 1910. } 
97 
4 
