168 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Specimens examined: 
Texas: Mer. Bound. Surv.; type specimensas cited under type locality; Belknap, 
Sulton Hayes 309; Dallas, Woolson, in 1873 (type of Cymopterus montanus 
pedunculatus Jones) ; Dallas, Reverchon, in 1874 and 1880; Shackelford County, 
Holstein, in 1883; Dallas, Reverchon, February 26, 1900. 
This species is restricted to the prairie region of northeastern Texas, and is quite 
distinct in range from P. montanus, to which it has been referred. Mr. Reverchon has 
sent us living specimens from Dallas with the following note: ‘This species occurs 
on the limestone prairies of north Texas (how far south Ido not know). It grows 
where the rocks crop out, and blooms quite early; in fact, it is the first bloomer I 
know of in Texas, sometimes appearing about Christmas when the winter is open.” 
3. Phellopterus bulbosus (A. Nelson) C. & R. 
Cymopterus bulbosus Nelson, Bull. Torr. Bot. Club 26: 241. 1899. 
Leaf segments more crowded than in P. montanus,; flowering umbel 
more elongated, in fruit equaling or exceeding the leaves; involucre 
conspicuous, of broad hyaline bracts united at base; involucels more 
conspicuous, the broad hyaline bracts sometimes with a greenish cen- 
tral region; pedicels longer than in 7% montanus; flowers purplish; 
fruit oblong, much narrower than in /?. montanus, 8 mm. long, with 
broad thin wings not thickened at insertion; oil tubes 3 to 5 in the 
intervals, 6 to 10 on the commissural side; seed face with rather deep 
and broad concavity. 
Type locality not given, but label states ‘naked clay soil in the 
ravines and on the slopes of Green River,” Wyoming; collected by 
A, Nelson, no. 4709, June 14, 1898; type in Herb. Univ. Wyoming, 
duplicate in U. 8S. Nat. Herb. 
Green River region of Wyoming. 
é 
Specimens examined: 
Wyomrna: Green River, Parry 117, in 1878; La Barge, Uinta County, Stevenson 
40, April 27, 1894; Point of Rocks, Sweetwater County, Nelson 3085, June 1, 
1897; type specimens as cited under type locality. 
4. Phellopterus purpurascens (Gray) C. & R. 
Cymopterus montanus purpurascens Gray, Bot. Ives 15. 1860. 
Cymopterus utahensis Jones, Calif. Acad. Sei. IL. 5: 684, 1895. 
Cymopterus utahensis monocephalus Jones, 1. ¢. 685. 
Peduncles longer than in P. montanus, in fruit equaling or exceed- 
ing the leaves; umbels more or less compacted; involucre conspicuous, 
composed of white or purplish hyaline bracts which have 1 to 3 green 
or purplish nerves and are united at base, or sometimes reduced to a 
hyaline sheath; involucels resembling the involucres; flowers purple; 
fruit orbicular, with broad wings and oblong body, 10 to 12 mm. long; 
carpels somewhat flattened, with 5 broad thin wings scarcely thickened 
at insertion; oil tubes 2 or 3 in the intervals, 4 on the commissural 
side; seed somewhat flattened, with broadly concave face. 
Type locality, ‘‘ Yampai Valley to San Francisco Mountains;” col- 
lected by Newberry; type specimen in U. 5S. Nat. Herb. 
In clay or gravel, New Mexico, Arizona, Utah, Nevada, and Idaho. 
