326 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
42, Abronia nudata Rydb. Bull. Vorr, Club 29: G83. 1902. Figure 64. 
This differs from ot. fragrans in its smaller bracts, more glabrous 
stem, and its decumbent labit, 
Specimens examined: 
MONTANA: Colgate near Glendive, IS92, Sandberg, MacDougal & 
Heller 1016, type collection. 
Fic, 4.— 43. Abronia glaucescens (A. Nelson) Standley. 
Fruit of Abronia fragrans glaucescens A, Nelson, Bot. Guz. 84: 864, 1902. 
‘neue The glabrous stem and flowers, the thick leaves, and the glaucous 
Seale 2, leaves and stems separate this from 4. fragrans, which it resembles in 
habit. From A. nudata it can be separated by its larger bracts and 
leaves, more erect habit, and more glabrous fruit and stem, No type was desie- 
nated in the original description, and I would Sugeest as a type the collection 
from Casper, Natrona County, Wyoming, “ in sundy, recky river bottoms,” July 
6, 1901, Goodding 210. 
Other specimens cramined: 
WYOMING: Inyvan Kara Divide. S02, Buff TSE: Casper, ISOL, Buffum 
785: Cheyenne, 1895, 1. Velson 1996: Powder River, 1894, Vernon 
Bailey 30. 
COLORADO: Manitou, 1886, Fritehey, 
44, Abronia ammophila Greene, Pittonin 4: 226, 1900, Figure 65, 
Abronia arenaria Rydb, Mem. X.Y, Bot. Gard. 1: 137. 1900, not 
Menz. 
Abronia nelsoni Weimerl, Aun, Cons. et Jard. Geneyv. 5:191, 
1901, 
Abronia cheradophila A, Nelson, Bot. Gaz. 34: 364. 1902, 
This much-named species is a very distinet one because of. its 
prostrate habit, narrow leaves, lanceolate bracts only about 4 mim, ammophita, 
long, and peculiar fruit. Seale 2. 
7 ad _4 . 
Fic. 65.—Fruit 
Of Abronia 
Specimens eramined: 
Wroming: Yellowstone Lake, TSO, ft. a BL Nelson 6685 ; 
Yellowstone Lake, 1871, Robert lds; same locality, 
ISS, Tiveedy 1442. 
45. Abronia lanceolata Rydb. Bull. Torr, Club 29: 685. 1902, 
FIGURE 66, 
. ; Specimens eramined: 
Fic. 66.—Fruit  * ! 
of Abronia Ipano: Idaho Balls, IDOL, Merrill & Wileow STO, type: Idabo 
lanceolata- “alls, 1893, Palmer 884: Blackfoot, 1898, Palmer 462: 
Seale 2, St. Anthony. 1900, Werrill 441. 
46. Abronia mellifera Dougl. in Hook. Bot. Mag. 56: pi. 2879, 1829, igure 67. 
Abronia suksdorsii Coult. & Fish, Bot. Gaz. 17: 548, 18902. 
This can -be distinguished from any other member of 
the fragrans group by the broad, thin wings of the fruit 
and the narrow bracts: its stem is finely puberulent 
throughout, while the stems of -t. lanceolata are almost or 
quite glabrous. 1. swksdorfii IT ean not separate from any 
other form of the species: the types of this and A, mel- 
lifera are from nearly the same locality, 
FIG. 67.--Fruit of 
Specimens examined: Abronia mellifera, 
WASHINGTON: Near Columbus, 1886. Suksdorf S95: Beale 2, 
near Rock Island. 1893. Sand be ro Leiberg 464: Cow Creek, 1902, 
Griffiths & Cotton 543: Pasco, ISOS, Elmer 1055; Walla Walla, Wilkes 
