352 OLDER MESOZOIC FLORAS OF UNITED STATES. 
Genus SAGENOPTERIS Presl. 
SaGENOPTERIS NILSONIANA (Brongniart) Ward n. comb." 
PL LVI, Fig. 1; Pl. LXVII, Fig. 2. 
1820. Bladaftryck (folium ovatum, etc.) Nilsson: K. Vet.-Acad. Handlingar, Stock- 
holm, Vol. I, p. 115, pl. v, figs. 2, 3. 
1825. Filicites Nilsoniana Brongn.: Ann. Sci. Nat. de Paris, Vol. IV, p. 218, pl. xii, 
fig. 1. 
1828. Glossopteris Nilsoniana Brongn.: Prodrome, pp. 54,194; Hist. Vég. Foss., Vol. I, 
+ p. 225, pl. xiii, figs. 3, 3A. 
1834. Glossopteris latifolia Minst.: N. Jahrb. f. Min., 1834, p. 43. 
1836. Glossopteris elongata Minst.: Op. cit., 1836, p. 510. 
1836. Acrostichites inequilaterus Sternb. in Géppert: Syst. Fil. Foss., p. 287. 
1836. Aspidites Nilsonianus Géipp.: Op. cit., p. 354. 
1838. Sagenopteris rhoifolia Pres] in Sternberg: Flora der Vorwelt, Vol. II, pp. 165, 210, 
pl. xxxv, fig. 1. 
1838. Sagenopteris diphylla Presl: Op. cit., p. 165, pl. xxxv, fig. 4. 
1838. Sagenopleris semicordata Presl: Op. cit., p. 165, pl. xxxv, fig. 2. 
1838. Sagenopteris acuminata Presl: Op. cit., p. 165, pl. xxxv, fig. 3. 
1843. Sagenopteris elongata Minst.: Beitr. z. Petrefactenkunde, Vol. II. Pt. VI, p. 28. 
1845. Acrostichites? (Sagenopteris) diphylla (Presl) Ung.: Synops. Pl. Foss., p. 77. 
1845. Acrostichites ? (Sagenopteris) semicordata (Presl) Ung.: Loe. cit. 
1845. Acrostichites? (Sagenopteris) acuminata (Presl) Ung.: Loc. cit. 
1849. Phyllopteris Nilsoniana Brongn.: Tableau, pp. 22, 103. 
Several poorly preserved specimens of a Sagenopteris are found at 
the locality ‘‘In the bed of a ravine that leads from the Banner mine,” 
etc. They occur in the form of detached pinnules on indurated tuff, 
and the nervation is poorly shown, but is very dense. Pl. LVI, Fig. 
1, gives one of the most perfect pinnules, and Pl. LX VII, Fig. 2, a large 
pinnule in which the anastomosis is not visible. This plant seems to 
be quite near Sagenopteris rhotfolia elongata Mimst.’ The midrib in 
the Oroville plant is less strong, the nervation denser, and the pinnules 
are on an average smaller. It may be a new species, but there is not 
enough material to fix positively the character of the plant. 
1§chimper (Traité de Pal. Vég., Vol. I, p. 642) says: 
“Le Glossopteris (Phyllopteris) Nilssoniana Brongn. appartient sans aucun doute A cette espéce. 
J’en ai pu examiner dans la collection de M. Nilsson 4 Lund de trés-bons échantillons, qui m’ont 
convaincu que la plante de la Suéde ne différe en rien de celle de l’Allemagne." 
As the Filicites Nilsoniana of Brongniart (1825) was the earliest name given to the plant, and as all 
are now agreed that it belongs to Presl’s genus Sagenopteris (1838), there is no way of escaping this 
combination for the plant that has so long gone by the name Sagenopicris rhoifolia, which Professor 
Fontaine continues to apply to it. The synonymy here given rests entirely on the authority of Pres] 
and Schenk. Presl himself admitted that his plant was the same as Sternberg’s Acrostichites inaqui- 
laterus (1836), which he had shown to Géppert and allowed him to describe. This alone condemns 
Presl’s specific name. Schimper confirms all that Schenk says as to the other names, ‘and the former 
worked over the original material. In the synonymiy here given I have not taken account of the 
three varieties that Schenk distinguishes. It is sufficiently doubtful whether the American forms 
really belong to this widespread polymorphous species or not. L. F, W. 
2See Schenk, Fossil Flora der Grenzschichten, pl. xii, fig. 1. 
