160 GRAMINEAE (GRASS FAMILY) 



10. G. bore^lis (Nash) Batohelder. Similar to Q.fluUans; the leaves com- 

 monly oonduplioate ; panicles 1.5-5 dm. long, often ■nearly simple, the slender 

 branches erect or spreading toward the ends, a pediceled spikelet in each axil ; 

 spikelets usually more numerous, 7-13-flowered, 1-1.5 cm. long, on slender 

 pedicels ^^ as long ; glumes subacute ; lemmas 3.5-4 jjjm. Zoreg^, thiuner, strongly 

 7-nerved, minutely scabrous or glabrous, only the nerves hispidulous, obtuse and 

 erose at the shining scarious summit, slightly exceeding their paleas. — In wet 

 places or shallow water, Nfd. to la., and northwestw. June-Aug. 



11. G. acutiflbra Torr. Culms flattened, weak and slender, 3-9 dm. high; 

 sheaths overlapping, the uppermost inclosing the base of the panicle ; blades 

 0.8-1.5 dm. long, scabrous above; panicle simple, 1.5-3.5 dm. long, the stiff 

 branches appressed or finally spreading ; spikelets subsessile, 5-12-flowered, 2-4 

 cm. long ; lemmas 6-8 mm. long, acute, scabrous, exceeded by the long-acumi- 

 nate bicuspidate paleas. — Wet soil and in shallow water. Me. to Del., w. to 0. 

 May, June. 



74. PUCCINELLIA Pari. 



Spikelets as in Glyceria but lemmas firmer, the nerves obscure, often sub- 

 acute and minutely pubescent at base. — Tufted perennials, mostly glaucous 

 saline species. (Named for Prof. Benedetto Puccinelli, an 

 Italian botanist.). 



1. P. maritima (Huds.) Pari. (Goose Grass, Sea Spear 

 Grass.) Culms erect, 3-5 dm. high, from slender rootstocks ; 

 leaves flat or involute, acute or pungent ; panicles 8-12 cm. 

 long; lower branches solitary or in pairs, appressed or ex- 

 panded ; spikelets i-10-flowered, 6-12 mm. long; lemmas obtuse 

 or truncate, 3-4 mm. long. — Salt marshes and beaches along 

 the coast, Mass., and northw. July, Aug. — Somewhat variable 

 1T2. P. Diaritima. ^^ ^^^ f^j.^^ of ^jjg panicle and size of the florets. (Eu.) 

 Panicle x Vio- Fig. 172. 



Floret^xw' ^- ^- angustata (R. Br.) Eand & Eedfield. Culms erect or 



ascending, 1.5-4 dm. high, /rom very slender rootstocks ; leaves 

 very narrow and involute ; ligule long ; panicles 3-8 cm. long, narrow, the soli- 

 tary branches appressed or finally ascending ; spikelets 2-i-floioered, 3-6 mm. 

 long ; lemmas obtuse or subacute, 3 mm. or less long. (P. maritima, var. (?) 

 minor Wats.) — Salt marshes and sandy coasts, Ct., and northw. June, July. 



3. P. distans (L.) Pari. No rootstocks ; culms rather^tout, 3-6 dm. high, 

 geniculate below ; leaves mostly flat, short; ligule short; panicles 5-18 cm. long, 

 the branches in 4's or 5's, soon spreading and finally deflexed, 



usually naked below ; spikelets 3-6-flowered, 3-0 mm. long, nfl 



crowded; first glume less than half as long as lowest floret; j|M 



lemmas truncate-obtuse, about 2 mm. long. — Salt marshes along Wffl 



the coast and on ballast, Del. to N. B. June-Aug. — Apparently ^& 



much rarer than the last, and perhaps not native. (Eurasia, " 



n. Afr.) Fig. 173. ^.jg p aistans. 



4. P. airoides (Nutt.) Wats. & Coult. Similar in habit to snikeletxS 

 the preceding ; blades 5-10 cm. long, often involute ; panicle- 

 branches ascending or erect or the lowest finally spreading or reflexed ; spikelets 

 2-7-flowered, not crowded; glumes acute or subacute, the first more than half 

 as long as the lowest floret. — In saline soil from the Dakotas southw. and 

 westw. ; occasionally eastw. in Minn, and Mich. ; adv. in s. Me. (Parh'n). 



5. P. BoRR^Ri (Bab.) Hitchc. Panicle compact, the branches mostly spike- 

 let-bearing from base and not deflexed. — On ballast and waste places along 

 the coast, from Del. to N. S. (Adv. from Eu.) 



75. FESTtrCA L. Fescue Grass 



Spikelets 2-many-flowered ; glumes unequal, narrow, acute, the first 1-, the 

 second 3-nerved ; lemma firm in texture, at least below, usually narrow, convex 

 or subeariuate, 5-neryed, acute (obtuse in i species) or tap»ing into a straight 



