46 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Athrotaxopsis tenuicaulis Font. Potomac Fl., p. 241,pl.cxiv,f. 4, 5; 
cxv, f. 4; cxvi, f. 6; cxvii, f. 2, 1889. 
Potomac formation : Fredericksburg and near Dutch Gap Canal, 
Virginia. , 
AZOLLOPH1TLLITM Penhallow. Trans. Roy. Soc. Canada, vol. viii, 
sec. iv, p. 77,1890 [1891]. 
Azollophyllum primaevum Penhallow in Dn. Trans. Roy. Soc. 
Canada, vol. viii, sec. iv, p. 77, f. 2, 1890. 
Miocene!: Stump Lake, Similkameen Valley, British Columbia. 
BAIERA Braun. Flora, 1841, p. 33, 1841. [Not seen.] 
Baiera brevifolia Newby. Am. Journ. Sci., vol. xli, p. 199, pi. xiv, f. 
3 ; 1891. 
Kootanie: Great Falls, Montana. 
Baiera foliosa Font. Potomac FL, p. 213, pi. xciv, f. 13, 1889. 
Potomac formation : Near Dutch Gap Canal, Virginia. 
Baiera incurvata Heer? Fl. Foss. Arct., vol. vi, abt. ii, p. 45, pi. xiii, 
f. 6, 1882 ; Newby., Fl. Amboy Clays, p. 60, pi. x, f. 6, 1895 [1896]. 
Amboy clay: Woodbridge, New Jersey. 
Baiera longifolia (Pom.) Heer. Fl. Foss. Arct., vol. iv, abt. i, p. 39, 
pi. viii, f. 6, 1877; Dn., Trans. Roy. Soc. Canada, vol. iii, sec. iv, p. 
9, pi. ii, f. 5, 1885 [1886]. 
Dicropteris longifolia Pomel. Bericht d. deutseh. Naturf. Gesell., 1847, p. 
339, 1847. 
Kootanie: Martin Creek, British Columbia. 
BAIEROPSIS Fontaine. Potomac Fl., p. 205, 1889. 
Baieropsis adiantifolia Font. Potomac Fl., p. 211, pi. xcii, f. 8, 9; 
xciii, f. 1-3; xciv, f. 2, 3, 1889. 
Potomac formation : Fredericksburg, near Potomac Run, and near 
Telegraph Station, Virginia. 
Baieropsis adiantifolia minor Font. Potomac Fl., p. 212, pi. xciv, f. 
1, 1889. 
Potomac formation : Fredericksburg, Virginia. 
Baieropsis denticulata Font. Potomac Fl., p. 210, pi. xciii, f. 7, 1889. 
Potomac formation : Near Dutch Gap Canal, Virginia. 
Baieropsis denticulata angustifolia Font. Potomac Fl., p. 210, pi. 
xcii, f. 7, 1889. 
Potomac formation : Near Brooke, Virginia. 
Baieropsis expansa Font. Potomac Fl., p. 207, pi. lxxxix, f. 1, 3; 
xci, f. 1; xci, f. 2; xcii, f. 5, 1889. 
Potomac formation: Fredericksburg, Dutch Gap Canal, Trents 
Reach, Virginia. 
Baieropsis foliosa Font. Potomac Fl., p. 209, pi. xciii, f. 4-6, 1889. 
Potomac formation : Near Brooke, White House Bluff, Virginia. 
Baieropsis longifolia Font. Potomac Fl., p. 210, pi. xci, f. 6, 1889. 
Potomac formation : Near Telegraph Station, Virginia. 
