RYDBERG: Rocky MounrTAIN FLORA 71 
includes P. anisatus and P. bipinnatus in his section Oreoxis, but the 
genus Oreoxis has all ribs corky and the lateral ones scarcely more 
prominent than the dorsal ones, the fruit is not flattened dorsally, 
the styles and sepals are erect. In Pseudocymopterus anisatus 
the lateral wings are very prominent, the dorsal ribs narrowly 
winged or some of them merely acute, the styles are recurved, 
the sepals spreading and one or two of them larger than the rest, 
and the fruit is decidedly flattened dorsally. The plant is more 
related to Aletes than to Oreoxis, and P. aletifolius connects it with 
that genus. It can not be placed in Aletes, however, for in that 
genus the fruit is not compressed and the ribs not winged. It 
would be much better to include P. anisatus and P. aletifolius in 
Pteryxia, as they have the foliage and nearly the same fruit as in 
that genus, but the strictly acaulescent plant, the narrow and thick 
wings of the fruit and the very prominent and unequal calyx-teeth 
would make it rather abnormal even in that genus. Although 
it does not differ so much in the technical characters of the 
fruit from the typical Pseudocymopterus, the habit is quite different, 
so also the texture of the leaves, and in Pseudocymopterus the 
sepals are minute. It is better to regard P. anisatus as a type of 
a new genus, 
Pseudopteryxia Rydb. gen. nov. 
Densely cespitose, strong-scented, acaulescent perennials with 
multicipital caudices covered with numerous sheaths of old leaves. 
Leaves pinnatifid or bipinnatifid with thick, firm, pungent divi- 
sions. Flowers yellow; involucres wanting; bractlets linear-subu- 
late, pungent. Calyx-teeth very prominent, spreading, unequal, 
one or two much longer than the rest. Stylopodium wanting. 
Fruit oblong, glabrous. Ribs thick, the dorsal and intermediate 
ones sharp or some of them with narrow wings; the lateral ones 
with broader wings, distinct from those of the other carpel. 
Carpels flattened dorsally. Oil tubes 1-3 in the intervals, 2-4 
on the commissural side. Seed face plane. 
Pseudopteryxia anisata (A. Gray) Rydb. 3 
Cymopterus (?) anisatus A. Gray, Proc. Acad. Phila (18622 
( 1863. 
Psciuloeymapbecs anisatus C. & R. Rev. N. Am. Umb. 75. “1888, ; 
