knowu TERTIARY PLANTS OF NORTH AMERICA. 41 
Araucaria podocarpoides Font. Potomac FL. p. 349, pi. Ixxxvi. f. 1. 
1889. 
Potomac formation : Xear Brooke, Virginia. 
Araucaria spathulata Newby. Later Fxtinct Floras, p. 10, 1868; 111. 
Cret. and Tert.Pl.. pi. ii, f. 5, 5a. 1878. 
Dakota group!: Sage Creek. Xebraska. 
Araucaria zarnioides Font. Potomac Fl. 7 p. 250, pi. cxxi. f. 1. 1889. 
Potomac formation: Xear Potomac Kim. Virginia. 
ARAUCARIOXYLON Krausein Schimper. Pal. Veg.,vol ii. p. 380, 
1872. 
Araucarioxylon virginianum Kn. Bull. U. S. Geol. Surv.. no. 56. p. 
50. pi. vii. f. 2-5, 1888. 
Triassic?: Taylorsville, Virginia. 
Araucarioxylon sp., Kn. Jo urn. Geol . vol. ii. p. 260, 1891. 
Lower Cretaceous: Black Hills. South Dakota. 
ARAUCARITES Presl. in Sternberg Vers., ii. p. 20% 1833. 
Araucarites aquiensis Font. Potomac FL, p. 204. pi. cxxxiii. f. 8-12, 
1889. 
Potomac formation: Xear Brooke, Virginia. 
Araucarites ovatus Hollick. Trans. N". Y. Acad. Sci.. vol. xvi. p. 128, 
pi. xii. f. 3a, 1. 1897. 
Clay marl Upper Cretaceous : Clirlwood. ]Sew Jersey. 
Araucarites virginicus Font. Potomac FL. p. 263. pi. exxxiv. f. 7, 
1889. 
Potomac formation: Trents Reach, Virginia. 
ARISiEMA Martins. Flora, vol. xiv. p. 459, 1831. 
Arisaema cretacea Lx. Fl. Dak. Gr., p. 38. pi. xlvi. f. 1. 1891. 
Dakota group: Kansas. 
Arisaema? dubia Hollick. Trans. X. Y. Acad. Sci.. vol. xvi, p. 130, pi. 
xii. f. 6, 1897. 
Clay marl Upper Cretaceous) : Cliffwood. Xew Jersey. 
Arisaema? mattewanense Hollick. Trans. X. Y. Acad. Sci . \ , xvi. 
p. 130. pi. xii. f. 7, 1897. 
Clay Marl (Upper Cretaceous): Cliffwood, New Jersey. 
ARISTOLOCHIA (Tournefort) Linmeus. Syst.. ed. i. 1735. 
Aristolochia cordifolia Newby. Later Extinct Floras, p. 71, 1808. 
Fort Fnion group: Yellowstone Biver. Montana. 
Aristolochia curvata Lx. Am. Journ. Sci.. vol. xxxii. p. 359, 1861 : 
Geol. Vt.. vol. ii, p. 715. f. 135. 130. 1861. 
Brandon, Vermont. 
Aristolochia dentata (Heer) Lx.=Aristolochites dentata. 
Aristolochia obscura Lx. Am. Jour. Sci.. vol. xxxii. p. 359, 1861j 
Geol. Vt.. vol. ii. p. 715. f. 137. L38, 111. 1861. 
Brandon, Vermont. 
