188 MISSOURI BOTANICAL GARDEN. 
1320, 1321, 1322; Brown, 365, 366, 367). Sta. Maria 
(1322, a). 
Lunuvartia Cruciata, Dumort. LZ. vulgaris, Mitten 325; 
Watson (2) 616; Drouet 216.— Gray, 730. pl. 25. 
? Flores (Watson). : 
CoNOCEPHALUM CONICUM, Wiggers. Feygatella conica, Mit- 
ten 827; Watson (2) 616; Drouet 216.— Gray, 729. 
pl, 22. 
? Flores (Watson). 
ASTERELLA AFRICANA, Underwood, nov. nom. Rha- 
cotheca Azorica, Bisch. in Seubert 12. pl. 14; Mitten 
328; Drouet 216. 
Flores (1323). San Miguel (1324, 1325). 
Resounta HeMispHaERica, Raddi. Fegatella hemisphae- 
rica, Watson (2) 616; Drouet 216. 
? Flores (Watson). Sta. Maria (1325, a). 
Algae.* 
CHARACEAE. 
NITELLA HYALINA, A. Br.? 
San Miguel (1397). 
The absence of mature spores renders it impossible to determine 
it with certainty. It seems to differ from the ordinary forms of 
hyalina.— A. 
CHARA FRAGILIS, Desv. 
San Miguel (1398). 
A very unusual form, slender-leaved and not incrusted.— A. 
These plants occur in considerable abundance at Sete Cidades 
in the Lagoa Grande. The Chara, which occurs in the bay be- 
tween the peninsula and the Lagoa Verde, does not extend to a 
depth of more than 10.5 meters. The smaller and more sparing 
Nitella lies, in the bay, only along the outer limit of growth of the 
other species, at a depth of about 10 meters, and extends along the 
* Determinations and notes on my own collections, by Professor W. 
G. Farlow, except for Characeae, which are by Dr. T. F. Allen, and 
Diatomaceae, which are by Professor H. L. Smith. There is no doubt 
some confusion in names of species not seen by these gentlemen. 
