244 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
2. Monolepis nuttalliana (Roem. & Schult.) Greene, Fl. Fran. 168. 1891. 
Blitum chenopodioides Nutt. Gen. 1: 4. 1818, not Lam. 
Blitum nuttallianum Roem. & Schult. Mant. 1: 65. 1822. 
Monolepis cheno podioides Moq. in DC. Prod. 18°: 85. 1849. 
Type Locautry: ‘On arid soils near the banks of the Missouri.” 
Rance: Washington to Saskatchewan, southward to California and New Mexico. 
SPECIMENS EXAMINED: Ellensburg, Piper, May 20, 1897; Ritzville, Sandberg & Leiberg 
165; Pullman, Piper 1844; Waitsburg, Horner 186. 
ZONAL DISTRIBUTION: Upper Sonoran and Arid Transition. 
AMARANTHACEAE. Amarantu FamiIty. 
AMARANTHUS. 
Flowers in dense terminal spikes. 
Spikes green, stout, 8 to 14 mm. thick... ....-. 22 -22-2.2222--2----- 1. A. retroflerus. 
Spikes purple, slender, 4 to 6 mm. thick 
Flowers in small axillary clusters. 
Soe ee eee eee 2. A. paniculatus. 
Plants prostrate; sepals 4 or 5....2.2.2.2.-.-.-2-.-2-2--------- 3. A, blitoides. 
Plants erect, much branched; sepals 8... ........-.------------- 4. A. graecizans. 
1. Amaranthus retroflexus L. Sp. Pl. 2: 991. 1753. PIGWEED. 
Type Locaity: ‘Habitat in Pennsylvania.” 
Rance: Temperate and subtropical North America, mainly spread as a weed. 
SPECIMENS EXAMINED: Pullman, Peper 1554. 
2. Amaranthus paniculatus L. Sp. Pl. ed. 2. 2: 1406. 1763. 
Type Locatity: “ Habitat in America.” ' 
Rance: Naturalized in the United States from subtropical regions. 
SPECIMENS EXAMINED: Clarks Springs, Avreager 569. According to Hooker collected 
in 1825 by Scouler on the Columbia. 
3. Amaranthus blitoides 8S. Wats. Proc. Am. Acad. 12: 273. 1877. 
Type Locatity: ‘Frequent in the valleys and plains of the interior, from Mexico to N. 
Nevada and Iowa, and becoming introduced in some of the Northern States eastward.”’ 
Rance: Washington to Nevada, Colorado, and Mexico. Now spreading eastward. 
SPECIMENS EXAMINED: Pullman, Piper 1552; Spokane, A’reager 581. 
ZONAL DISTRIBUTION: Arid Transition. 
4. Amaranthus graecizans L. Sp.. Pl. 2: 990. 1753. TUMBLEWEED. 
Amaranthus albus L. Syst. ed. 10. 1268. 1760. 
Tyree Locauity: ‘ Habitat in Virginia.” 
RanGE: Spread as a weed throughout temperate and subtropical North America. 
SPECIMENS EXAMINED; West Klickitat County, Suksdorf 2079; Pasco, Henderson in 
1892; Pullman, Piper 1553; Wawawai, Piper, July 31, 1893. 
NYCTAGINACEAE. [our-o’chock TF Amity. 
ABRONIA. 
Plants of the seashore. 
Flowers rose-colored; wings of the fruit thin..............-2.-.-..-- 1. A. umbellata. 
Flowers vellow; wings of the fruit thick, hollow.-.................. 2. A. latifolia. 
Plant of the sage-plains; flowers white...............-.-.--.2-.-.----- 3. A. mellifera. 
1. Abronia umbellata Lam. Ill. 1: 469. pl. 105. 1791. 
Trek Locaniry: “Ex Californiae maritimis.”’ 
RANGE: Seacoast, Washington to California. 
SPECIMENS EXAMINED: Port Angeles, Piper 2301; Clallam County, Elmer 2790; Point-° 
no-point, Piper in 1890. 
ZONAL DISTRIBUTION: Humid Transition. 
