GRASS FAMILY. 209 
78. DUPONTIA R. Br. Parry’s Voy. App. 290. 1824. 
Low grasses, with flat leaves and generally narrow panicles. Spikelets 2-4-flowered, the 
flowers all perfect. Two lower scales empty, extending beyond the flowering scales, mem- 
branous; flowering scales entire, membranous, with a tuft of hairs at the base. Stamens 3. 
Styles distinct. Stigmas plumose. [Name in honor of J. D. Dupont, French botanist. ] 
Two arctic species, both circumboreal. 
1. Dupontia Fisheri R. Br. Fisher’s 
Dupontia. (Fig. 481.) 
eae Fisheri R. Br. Parry’s Voy. App. 291. 
1824. 
Smooth and glabrous, culms 5/—12/ tall, erect, 
simple. Sheaths overlapping; ligule 1’’ long or 
less; leaves 1/-6’ long, 1/’-2’’ wide, flat; panicle 
usually contracted, 114’—3'4’ long, the branches 
less than 114’ long, erect, or sometimes ascend- 
ing; spikelets few, about 2-flowered, 3’/-4’’ long; 
empty basal scales thin, generally acute, the first 
I-nerved, somewhat shorter than the second, 
which is usually 3-nerved, the lateral nerves 
often vanishing at about the middle; flowering 
scales 214’/-3// long, I-nerved or obscurely 
3-nerved; basal hairs about 4’ long. 
Arctic regions of northeastern America. Also in 
arctic Europe and Asia. Summer. 
79. SCOLOCHLOA Link, Hort. Berol. 1: 1G, ST 
Tall aquatic or marsh grasses, with flat leaves and ample panicles. Spikelets 2-4-flow- 
ered, the flowers perfect. ‘Two lower scales empty, thin-membranous, 3-5-nerved; flowering 
scales rigid, with a tuft of hairs at the base, rounded on the back, 5~7-nerved, some of the 
nerves usually excurrent as short points; palets about equalling the scales, 2-nerved. Stamens 
3. Stylesvery short. Stigmas plumose. Grain hairy at the apex. [Greek, referring to the 
rickle-like projecting nerves of the flowering scales. ] 
Species 2, in the north temperate zones of both continents. 
1. Scolochloa festucacea (Willd. ) 
Link. Fescue Scolochloa. 
(Fig. 482.) 
Arundo festucacea Willd. Enum. 1: 126. 1809. 
Scolochloa festucacea Vink, Hort. Berol. 1: 137. 
1827. 
Graphephorum festucaceum A. Gray, Ann. Bot. 
Soc, Can. 1:57. 1861. 
Culms 3°-5° tall, erect, smooth and glabrous. 
Sheaths often overlapping; ligule 1//-2’ long; 
leaves 7/-1° long or more, 2//—4’’ wide, flat, sca- 
brous on the margins; panicle 8/—12’ in length, 
usually open, the branches ascending, naked at 
the base, the lower 3/-4/ long; spikelets 3//-4’’ 
long; empty basal scales acute, the first shorter 
than the second; flowering scales scabrous, 
7-nerved. 
Iowa and Nebraska, north to Manitoba and As- 
siniboia. July-Aug. 
