106 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
29. ALETES C. & R. Rev. N. Am. Umbell. 27 and 125. 1888. 
Calyx teeth prominent. Fruit flattened laterally, oblong, glabrous. 
Carpel with equal and prominent ribs. Stylopodium wanting. Oil 
tubes large and solitary (several in 
A. davidsoni) in the broad inter- 
vals, 2 on the commissural side 
and a small one in each rib. Seed 
sulcate beneath the oil tubes, with 
face plane or slightly concave. 
Acaulescent (except in A. daved- 
son?) glabrous mountain perennials, 
with pinnate (ternate at first in A. 
davidson) leaves, broad sharply 
toothed or cut rather distant leaflets 
(except in «1. fenuifolia), mostly no 
involucre, involucels of linear to 
lanceolate bractlets, and yellow 
(purple in A. davidson?) flowers. 
Types species, Deweya acaulis 
Torr. 
A genus of 4 or 5 species, be- 
longing to the rocky foothills of Colorado, New Mexico, and Arizona. 
Fig, 28.—Aletes acaulis: a, «8; by «10. 
Leaflets broad and sharply toothed. 
Flowers yellow. 
Ribs equaily prominent and not winged; pedicels very short. 
Peduncles longer than the leaves...........------------------ 1. A. acaulis, 
Peduncles much shorter than the leaves ............---------- 2. A. humilis. 
Lateral ribs (and sometimes dorsals) becoming winged; pedicels 2 to 8 mm. long. 
3. A. (?) macdougali. 
Flowers deep purple........2--.--------- eee eee eee eee ee eeee 4. A. (?) davidsoni. 
Leaflets filiform to linear, entire ........--.------------------- 5. A. (?) tenuifolia. 
1. Aletes acaulis (Torr.) C. & R. Rev. N. Am. Umbell. 126. 1888. 
Fig. 28. 
Deweya (?) acaulis Torr. Pacif. R. Rep. 4': 94. 1856. 
Oreosciadium acaule Gray, Proc. Ain, Acad. 7: 343. 1867. 
Seseli halla Gray, |. ¢. 8: 288. 1870. 
Musenium greenei Gray, |. ce. 387. 1872 
Carum (2) hallii Watson, Bibl. Index 416. 1878. 
Zizia hallii C. & R. Bot. Gaz. 12: 137. 1887. 
Cespitose, with peduncles 10 to 30 cm. high, often much longer than 
the leaves; leaflets ovate, irregularly toothed and cut, sometimes almost 
pinnatifid; umbels 8 to 15-raved: rays stiff, 10 to 20 mm. long; fruit 
almost sessile, narrowly oblong, + to 5 mm. long. 
Type locality (Deweya acaulis), **in crevices of rocks near Santa 
Antonita, New Mexico;” collected by Bigelow; type in Herb, Colum- 
bia Univ. 
Rocky foothills of Colorado and New Mexico. 
