MANUAL OF THE GRASSES OF THE UNITED STATES 



685 



Figure 1541.— Distribution of 

 Panicum obtusum. 



130. LASIACIS (Griseb.) Hitchc. 



Spikelets subglobose, placed obliquely on their pedicels; first glume 

 broad, somewhat innated-ventricose, usually not more than one-third 

 the length of the spikelet, sev- 

 eral-nerved; second glume and 

 sterile lemma about equal, 

 broad, abruptly apicujate, 

 papery-chartaceous, shining, 

 many-nerved, glabrous, or 

 lanose at the apex only, the 

 lemma enclosing a membrana- 

 ceous palea and sometimes a 

 staminate flower; fertile lemma white, bony-indurate, 

 obovoid, obtuse, this and the palea of the same tex- 

 ture, bearing at the apex in 

 a slight depression a tuft of 

 woolly hairs, the palea concave 

 below, gibbous above, the apex 

 often free at maturity. Large 

 branching perennials, with 

 woody culms often clambering 

 several meters high into shrubs 

 or trees, the blades firm, flat, 

 usually lanceolate and narrowed into a petiole, the 

 spikelets in an open panicle. Type species, Lasiacis 



divaricata. Name 

 from Greek lasios, 

 woolly, and akis, point, alluding to 

 the tuft of wool at the tip of the 

 fruit. 



1. Lasiacis divaricata (L.) Hitchc. 

 Tibisee. (Fig. 1546.) Glabrous 



Figure 1543.— Distribution of 

 Panicum hemitomon. 



Figure 1542.— Pani- 

 cum hemitompn. 

 Panicle, X 1; spike- 

 let and floret, X 10. 

 (Tracy 6731, Fla.) 



Figure 1545.— Distribution of 

 Panicum gymnocarpon. 



throughout except the margins of 

 the sheaths; culms much branched, 

 clambering over shrubs to the height 

 of 3 or 4 m, the main culm (cane) 

 strong, as much as 6 mm in diam- 

 eter, the main branches often fas- 

 cicled, the vigorous secondary sterile shoots usually strongly divari- 

 cate or zigzag; blades narrowly lanceolate, 5 to 20 cm long,^ 5 to 15 

 mm wide, or larger on vigorous sterile shoots; panicles terminating 



Figure 1544.— Panicum gymnocarpon. Panicle, 

 X 1; spikelet and floret, X 10. (Type.) 



