60 The Botanical Gazette. [February, 
established Rebouillia, contained what was left in the genus 
after the one species was taken from it. That Nees established 
Fimbriaria without recognizing the fact that one of its most typ- 
ical species already stood as the sole representative of a genus 
does not alter the case. Since Fimbriaria Nees cannot possibly 
stand, as there is an earlier Fimbriaria Stackh. (1809) among 
the algz, there is no possible excuse for using Hypenantron 
when there is already an appropriate generic name nineteen 
years older. There is even much less excuse for the adop- 
tion of Asterella for Rebouillia since the latter name was the 
first to be separated from the former. The fact that Asterella 
has been used for another genus will make a little confusion 
for a time, but that would not warrant the cancellation of 
such an appropriate name as has been done by Schiffner in 
Die natiirlichen Pflanzenfamilien (Engler-Prantl). 
The American species under their new names are as fol- 
lows:— 
1. ASTERELLA TENELLA Pal. de Beauv. Encyc. Meth, 
Bot. 3: 110. 1810. 
Marchantia tenella L. Sp. Pl. 1137. 1753. 
Fimbriaria nigripes Bisch. MS. in Lehm. Pug. Pl. 6: 19. 1834- | 
Fimbriaria tenella Nees, Europ. Leberm. 4: 271. 1838. 
Fimbriaria mollis Tayl. Lond. Jour. Bot. 5: 411. 1846. 
This species is very widely distributed throughout Eastern 
America. Specimens have beenreceived as follows: Massa- 
chusetts, Cummings, Crocker, Underwood; New York, 
Fischer; Ontario, Macoun; Ohio, Werner, Herrick; Indiana, 
Underwood; Illinois, Seymour; Pennsylvania, (hb. Taylor, 
type of F. mollis), Delaware, Commons; Virginia, (ex hb. 
James); South Carolina, DuBois; Georgia, Underwood; Ten- 
nessee, Bain; Missouri, Demetrio. Sterile forms collected im 
Nebraska, Webder, and in Minnesota, Holsinger, have been 
_. hitherto referred to this species but these need the confirma- 
tion of mature specimens as they differ in being dark purple 
beneath, and the Nebraska specimens at least possess whitish 
scales. 
2. Asterella Californica (Hampe), nom. nov. 
Fimbriaria Californica Hampe MS. 2. 2. in Aust. Hep. Bor.-Am- 
135; Undw. Bull. Ill. State Lab. Nat. Hist. 2: 41. 188. 
This species is found throughout California from San Fran- 
cisco southward to San Diego and Guadeloupe Island, having 
been sent by various collectors. Sterile specimens have also 
