160 THE AMERICAN MIDLAND NATURALIST 
List N. A. Pterid, 26, (1901). See also A. A. Eaton in Fern Bull. 
ele E12, (190%): 
Eddy Co., Sheyenne. 
15. Equisetum robustum A. Br. Engelm. Am. Journ. Sci. 
46: 88, (1844). 
In the Willow Creek ravine near Dunsieth. ~ 
16. Equisetum pratense Ehrh. Hannov. Mag. 138, (1784). 
Turtle Mountains: near St.. John; Pleasant Lake. 
Family 5. SELAGINELLACEAE Underw. Nat. Ferns, 103, 
(1881). 
SELAGINELLA Beauv. Prod. Aeth. p. 1o1, (1805). 
17. Selaginella densa Rydberg. Mem. N. Y. Bot. Gard, 
Ir Gigere, oy \ 
Dunsieth, Towner, Minot. 
Subkingdom SPERMATOPHYTA. 
Class I. GYMNOSPERMAE. 
Order I. CONIFERAE. Bellonius (1533), Rivinus (1690-1699). 
Family 6. ABNETIDEAE S. F. Gray, Nat. Arr. 2,223, (1821). 
PINUS Virgilius, Ecl. VII. 56 and Georgica I, 141. 
18. Pinus scopulorum (Engelm.) Lemmon. Gard. and For. 
183, (1897). 
Medora (Bergman.) 
JUNIPERUS Virgilius Ecl. VII, 53, and Ecl. X. 78. 
19. Juniperus vulgaris Tragus. Hist. 1074, also Clusius (1601). 
Juniperus communis Linn. Sp. Pl. 1ogo (1753). 
Medora (Bergman). 
20. Juniperus depressa Raf. Med. Fl. 12, (1830). 
Juniperus prostrata Pers. (?). 
Dickinson (Bergman). 
21. Juniperus scopulorum Sargent. Gard. and For. 10:423, 
(1897). 
Medora (Bergman in 1910; Stevens in 1914). 
Class 2. ANGIOSPERMAE. 
Subclass 1. MONOCOTYLEDONEAE. J. Ray and A. Haller. 
Order 6. PANDANALES. 
sritton, Man. 2nd ed. p. 38. (1905). 
Family 7. TYPHACEAE J. S. Hillaire, Expos. Fam. 1, 60 
(1805). 
