WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 197 
7. BISTORTA L. Bisrorr. 
Herbaceous, perennial, alpine or subalpine plants, glabrous, bright green; stems 
simple; leaves radical and cauline, oblong to linear; sheaths never ciliate; inflo- 
rescence sometimes showy, of a single terminal spicate raceme; stamens 8 or 9, 
exserted; styles usually 3-parted, exserted. 
KEY TO THE SPECIES. 
Racemes not viviparous (i. e. not bulblet-bearing), oblong, 10 to 20 
mm, thick ......... 2.22.22 eee eee eee eee eee eee 1. B. bistortoides, 
Racemes viviparous below, linear, 5 to 8 mm. thick we ceeeeee eee eee 2. B. vivipara. 
1. Bistorta bistortoides (Pursh) Small, Bull. Torrey Club 33: 57. 1906. 
Polygonum bistortoides Pursh, Fl. Amer. Sept. 271. 1814. 
Tyre tocatity: “In low grounds on the banks of the Missouri, called Quamash- 
flats.”’ . 
Rance: Arctic America to California and New Mexico. 
New Mexico: Santa Fe and Las Vegas mountains; Mogollon Mountains. Meadows 
in the mountains, Canadian to Arctic-Alpine Zone. 
2. Bistorta vivipara (L.) 8. F. Gray, Nat. Arr. Brit. Pl. 2: 268. 1821. 
ALPINE BISTORT. 
Polygonum viviparum L. Sp. Pl. 360. 1753. 
Tyre Locaity: “ Habitat in Europae subalpinis pascuis duris.”’ 
Ranae: British America to New Mexico and New England; also in Europe and 
Asia. 
New Mexico: Santa Fe and Las Vegas mountains; Rio Pueblo; Baldy. Meadows, 
in the Arctic-Alpine Zone. 
8. BILDERDYKIA Dum. B.tack BINDWEED. 
A twining annual with ovate, hastate, acute to acuminate leaves, the upper ones 
narrower; stems rough-angled; inflorescence axillary, slender, interrupted, of com- 
pound racemes bearing reduced leaves. 
1. Bilderdykia convolvulus (L.) Dum. Fl. Belg. 18. 1827. 
~ Polygonum convolvulus L. Sp. Pl. 364. 1753. 
Tiniaria convolvulus Webb & Mog. in Webb & Berth. Hist. Nat. Canar. 3?: 221. 
1836-50. 
Type Locauiry: “ Habitat in Europae agris.”’ 
Rance: Nearly throughout North America, except in the extreme north. 
New Mexico: Tunitcha Mountains; Chama; Farmington; Winsors Ranch; Pecos; 
Mogollon Mountains; Kingston; Mesilla Valley; White Mountains; Maxwell City; 
Sandia Mountains. Waste ground and fields, chiefly in the Transition Zone. 
8. FAGOPYRUM Gaertn. Buckwuerar. 
Annual with hastate leaves scattered along the stems; ocres fugacious; flowers in 
terminal or axillary racemes; calyx not keeled. 
1. Fagopyrum fagopyrum (L.) Karst. Deutsch. Fl. 522. 1880-83. 
Polygonum fagopyrum L. Sp. Pl. 364. 1753. 
Fagopyrum esculentum Moench, Meth. PI. 290. 1794. 
Type Locauity: “ Habitat in Asia.”’ 
New Mexico: Balsam Park, Sandia Mountains (Ellis 273). 
Common in cultivation and frequently escaped in North America. 
