160 GRAMIXEAE (GRASS FAMILY) 



10. G. borealis (Nash) Batchelder. Similar to G.fiuitans; the leaves com- 

 monly conduplicate ; 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-flo\vered, 1-1.5 Qm. long, on slender 

 pedicels \-l as Ion g ; glumes subacute ; lemmas 3.5-4 wim. Zonr/, thinner, strongly 

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

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

 places or shallow water, Nfd. to la., and north west w. June-Aug. 



11. G. acutiflbra Torr. Cuhns flattened, weak and slender, 8-9 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 G-8 mm. long, acute, scabrous, exceeded by the long-acumi- 

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

 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 Frof. Benedetto Puccinelli, an 

 Italian botanist.). 



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

 Grass.) Chihns 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 4-10-flowe7'ed, 6-12 mm. long; lemmas obtuse 

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

 the coast, Mass., and north w. July, Aug. — Somewhat variable 

 172. P mantima. ^^ ^^i^ ^^^^ ^^ ^^^ panicle and size of the florets. (Eu.) 



F?oret x2V ^- ^- angustata (R. Br.) Rand & Redfield. Culms erect or 



^' ascending, 1.5-4 dm. high., from very slender rootstocks; leaves 

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

 tary branches appressed or finally ascending ; spikelets 2-i-flowered, 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 north w. June, July. 



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

 geniculate below ; leaves mostly flat, shoj't; ligule short; panicles b-lS cm. long, 

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

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

 croi'xled ; first glume less than half as long as loicest floret; 

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

 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. 1^3 p jj^^^j^g 



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

 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. (Parlin). 



5. P. BoKKEHi (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-nerve(l ; lemma firm in texture, at least below, usually narrow, convex 

 or subcarinate, 5-nerved, acute (obtuse in 2 species) or tapering into a straight 



