114 
Eur.: Spitsbergen (!), Beeren Island (!), Kolguev, Novaya Zemlya to 75° (!), 
Waigats, Samoyede Land. As.: Arctic Coast (!), Mouths of the Yenissei 
and Olenek, Taimyr Peninsula 74°—75°, Chukeches Land, New Siberian 
Islands. 
The typical form introduced in West Greenl. 61° 13’. 
Geogr. area: The Arctic and mountain form is found in Iceland, 
Feerdes, Scotland, Northern Scandinavia, Northern Russia and Siberia, the 
type in North America, North and Central Europe, Northern Asia. 
12. BECKMANNIA Host. 
180. B. erucaeformis (L.) Host. 
Trautv. Fl. Kolym. p. 572. 
A tall subaquatic perennial grass, with glabrous, simple culms, 
and flat, rough leaves. Spikelets laterally compressed, round or 
obovate, densely imbricated in two rows on one side of the rachis. 
Spikes in a terminal spicate or narrow spike-like panicle. Spike- 
lets 2-flowered, glumes carinate. 
As.: Mouth of the Kolyma. 
Geogr. area: North America, South-eastern part of Europe, Si- 
beria, Japan. 
13. DUPONTIA R. Br. 
181. D. Fisheri R. Br., Chloris Melvilliana p. 33. 
Taylor, Pl. coll. at Davis Str. and Bafl. Bay p. 86; Nath., Spetsb. 
Karlv. p. 38; Kurtz, Fl. d. Tschuktschenh. p. 481; Macoun, Catalogue IV 
p. 228; Hook. Fl. bor. Am. II p. 242; Ledeb. Fl. Ross. IV p. 386; Trautv. 
Consp. FI. Nov. Zeml. p. 85, Pl. Sib. bor. p. 138, Syll. Pl. Sib. bor. orient. 
p. 541; Kjellm., Sib. Nordk. Fanerogamfl. p. 274, St. Lawrence-6n p. 21, 
Vest-Eskim. Land p. 55; Kjellm. & Lundstr., Nov. Semlja p. 315; Feilden, 
Nov. Zemlya p. 22; Schmidt, Fl. Jeniss. arct. p. 128; D. psilosantha Rupr. 
Fl. Samojed. cisur. p. 62, tab.6; Ledeb., l.c. p.3886; Lge. Consp. Fl. Groenl. 
p. 165; Nath., Nachtrage z. Fanerogamfl. Groénl. p. 132; Fl. D. tab. 2521; 
Colpodium humile Lge. (non Ledeb.) in Th. Holm, Nov. Zeml. Veget. p. 16, 
tab. I fig. 1, tab. II fig. 1—8 [vidi spec. origin.]. 
Stoloniferous, glabrous, about 20 cm. high. Panicle short with 
rather few spikelets. Spikelets shining, 1- or 2-flowered, pales not 
exceeding the glumes. Glumes ovate-lanceolate, obtuse or acuminate. 
Pales glabrous or more or less covered with silky hairs, erose, ob- 
tuse or bristle-pointed. 
D. Fisheri and D. psilosantha must form one species in that the 
pale is variable both in form and in hairiness. 
Am.: St. Lawrence Island, Kotzebue Sound, Port Clarence (!), Point 
Barrow, Arctic Coast and Islands to Hudson Bay and Hudson Strait, 
