126  LEJEUNEAE OF THE UNITED STATES AND CANADA 
vating one side, the innovation simple and sterile ; bracts compli- 
cate, unequally bifid, sometimes with a narrow and rudimentary 
wing along keel, the lobe oblong-ovate to obovate, suberect to 
widely spreading, rounded at the apex, 0.9 mm. long, 0.6 mm. 
wide, lobule oblong, rounded to subacute, 0.5 mm. long, 0.2 mm. 
wide; bracteole oblong to obovate, 0.5 mm. long, 0.45 mm. wide, 
narrowed toward base, truncate at the apex; perianth obovoid, 
about half exserted, 0.9 mm. long, 0.7 mm. wide, cuneate toward 
base, broad and truncate above and with a short, narrow beak, 
lateral keels sharp, antical keel short and low, postical keel long, 
broad and prominent, sharply two-angled when young and some- 
times showing a short supplementary fold between the angles near 
apex, keels slightly roughened from projecting cells: 4 spikes 
occupying short branches, similar to those of A. clypeata : spores 
brownish-green, angular, variable in length, with thickened walls 
marked by minute verruculae and small orbicular patches of low, 
radiating ridges, averaging 23 » in short diameter. 
Type-locality, Brazil (Sellow). 
On trees and rocks: Rhode Island (Bennett); Delaware 
Commons); Virginia (Seymour, Mears); North Carolina (John- 
son); South Carolina (Miss DuBois); Tennessee (Ruth, Scoville); 
Georgia (Underwood); Florida (Austin, Farlow, Lighthipe, Un- 
derwood, Straub, Nash); Alabama (Mohr, Earle and Baker, 
Maxon and Pollard); Mississippi (Hall, Lloyd and Tracy); Louis- 
iana (Langlois); Texas (Mohr). 
Exsic.: Hep. Bor.-Amer. 95 b (as Phragmicoma xanthocarpa). 
A. Sellowiana was first distinguished from A. clypeata by 
Austin, who considered it identical with Lejennea xanthocarpa 
Lehm. & Lindenb., a widely distributed tropical and subtropical 
species occurring in both America and Africa. Austin distributed 
the plant as ۸ xanthocarpa and it has since been 
known in America under this name. Through the kindness 
of Stephani, the writer has been enabled to study a specimen 
of A. Sellowiana collected at Petropolis, Brazil, by Rudolph. 
This specimen, which is quoted immediately after the type in the 
original description, agrees very closely with the specimens from 
the United States. It is probable, therefore, that the range of the 
species extends through Mexico and Central America into Brazil. 
It is worthy of note that the sterile type-specimens, collected by 
Sellow, were first referred doubtfully by Stephani to 4. clypeata.* 
* Hedwigia, 29: 20. 1890. 
