MANUAL OF THE GRASSES OF THE UNITED STATES 



2. Calamovilfa brevipilis (Torr.) 

 Scribn. (Fig. 455.) Culms solitary or 

 few, compressed, 60 to 120 cm. tall, 

 the base as in C. curtissii; blades 

 elongate, 2 to 3 mm. wide, flat to 

 subinvolute; panicle subpyramidal, 

 rather open, 10 to 25 cm. long, the 

 branches ascending, flexuous, naked 

 below; pedicels sparsely pilose at the 

 summit; spikelets brownish, 5 to 6 

 mm. long; glumes acuminate, the first 

 2 to 2.5 mm. long, the second about 

 4 mm. long; lemma villous on the back 

 below, the callus hairs 1.5 mm. long; 

 palea exceeding the lemma, villous on 

 the back. % — Marshes and river 

 banks, New Jersey. 



Calamovilfa brevipilis var. 

 calvipes Fernald. Very similar to the 



331 



Figure 453. — Ammophila arenaria. Glumes, floret, 

 and ligule, X 5. (Heller 5670.) 



Figure 454. — Calamovilfa curtissii. Plant, X J^I 

 glumes and floret, X 5. (Garber, Fla.) 



species; panicles looser, more open; 

 pedicels glabrous; spikelets 4 to 5 

 mm. long, the lemma and palea 

 about equal. % — Sphagnous bog, 

 Greensville County, Va. 



Calamovilfa brevipilis var. 

 heterolepis Fernald. Panicles some- 

 what narrower; pedicels with a few 

 short hairs at summit; spikelets more 

 crowded toward the ends of the 

 branches, 5.5 to 6 mm. long, the 

 palea slightly shorter than the lemma. 

 % — Edge of swamps and moist 

 savannas, Virginia to South Carolina. 



3. Calamovilfa longifolia (Hook.) 

 Scribn. (Fig. 456.) Culms mostly soli- 

 tary, 50 to 180 cm. tall, with strong 

 scaly creeping rhizomes; sheaths usu- 

 ally more or less appressed-villous, 

 especially near the summit; blades 

 firm, elongate, flat or soon involute, 

 4 to 8 mm. wide near base, tapering 

 to a long fine point; panicle 15 to 35 

 cm. long, rather narrow or contracted, 



