108 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
involucre none; involucel of several linear sometimes elongated bract- 
lets; flowers deep purple; fruit oblong, 3 mm. long, flattened laterally, 
crowned by prominent calyx teeth; carpels more or less flattened dor- 
sally, the lateral and sometimes the dorsal and intermediate ribs more 
or less winged; stylopodium none; oil tubes several in the intervals; 
seed face plane. 
Type locality, near Coronado mine, Clifton, Ariz., among rocks in 
moist creek: collected by A. Davidson, no. 161, June 7, 1900; type in 
U.S. Nat. Herb. 
Arizona. 
Specimens examined: 
Arizona: Type specimens as cited under type locality. 
Flowering material of this species was sent by Mr. 8. B. Parish in the winter of 
1899-1900, but we were unable to determine it. Dr. A. Davidson, however, kindly 
consented to re-collect the species in fruiting condition. He has just sent in speci- 
mens, which enable us to characterize the species. We are unable, however, to 
decide with definiteness its generic relations. In habit it suggests Pseudocymopterus 
montanus, but the fruit is quite different. From typical Aletes it likewise seems 
different, but for the present there seems to be no better place for it. 
5. Aletes (?) tenuifolia C. & R., sp. nov. 
Stems glabrous, once to twice branching, slender and weak, usually ~ 
longer than the leaves, 1 to 2 dm. long; leaves delicate, pinnate; leaf- 
lets 3 to 5, entire, filiform to linear, acute, 1 to 8 cm. long; rays very 
short (2 to 4 mm. long); fruit subsessile (the pedicels 1 mm, or less 
long): involucre wanting; involucels linear, entire, 3 to 6 mm. long; 
fruit oblong, 3 to 4 mm. long, slightly roughened; seed flattened 
slightly dorsally; carpels rather strongly 5-ribbed; oil tubes 2 or 3 
in the intervals. 
Type locality, near Logan, Utah; collected by 2. A. Rydberg, August 
9, 1895; type in New York Botanical Garden herbarium, fragments 
and photograph in U. S. National Herbarium. 
Specimens examined: Type specimens as cited under type locality. 
We are at loss just where to refer this species, and it is placed here only tenta- 
tively. 
30. LEIBERGIA ©. & R. Contr. Nat. Herb. 38:575. 1896. 
Calyx teeth obsolete. Fruit flattened laterally, linear, beaked, gla- 
brous. Carpels only slightly flattened dorsally, with five filiform ribs, 
the two laterals a Jittle more prominent and turned inward. Stylo- 
podium wanting. Oil tubes small, single in the intervals, two on the 
commissural side. Seed face broad, slightly concave, but when dry 
becoming more or less involute. 
Slender glabrous acaulescent plants from small globose tubers, 
with leaves ternately divided into long filiform leaflets, irregular 
umbels, subsessile fruit, and white flowers. 
A monotypic genus of the Columbia River region. 
