62 Graminaceae 
D. Panicle 20—40 cm. long; spikelets 4—6 mm. long; lemma 2.5 mm. long. 
iW e(G. grandis.) G. americana (Torr.) (Reed Meadow-grass) 
DD. Panicle 10——20 cm. long; spikelets 2—4 mm. long; lemma |. 7—2.2 mm. 
long. C. E. (G. nervata elata; G. latifolia.) 
G. nervata Trin. (Fowl Meadow-grass) 
PUCCINELLIA SPEAR-GRASS 
Perennial, tufted, mostly glaucous and saline species. Leaf-blades flat or involute. 
s 
Spikelets 2—10-flowered, panicle open or contracted. Glumes obtuse or acute, unequal. 
Lemma obtuse or acute, rounded on the back, 5-veined, the veins very obscure or almost 
wanting, often minutely pubescent at base. Stamens 3. Grain compressed, enclosed, 
usually adherent. (Honor of B. Puccinelli, an Italian botanist.) 
A. Plants with slender rootstocks; lowest panicle-branches solitary or 2 together. 
B. Panicle 8—12 cm. long; spikelets 4—10-flowered, 6—12 mm. long; lemma 
3—4 mm. long. W. P. maritima Parl. (Sea Spear-grass) 
BB. Panicle 3—8 cm. long; spikelets 2—4-flowered, 3—6 mm. long; lemma 3 
mm. or less long. W. P. angustata R. & R. (Arctic Spear-grass) 
AA. Plants without rootstocks; lowest panicle-branches 3—6 together. 
C. Lower glume more than '/4 as long as- the lowest flower; lowest panicle-branches 
3—4 together; leaves mostly involute. 
D. Plant 3—4.5 dm. high; glumes not abruptly pointed. E. 
P. lemmoni Scribn. (Lemmon’s Spear-grass) 
DD. Plant 3—12 dm. high; glumes abruptly pointed. E. 
P. airoides W. & C. (Slender Spear-grass) 
CC. Lower glumes less than 14 as long as the lowest flower; lowest panicle-branches 
4—6 together; leaves mostly flat. W. (P. rubida.) 
P. distans Parl. (Spreading Spear-grass) 
FESTUCA FESCUE 
Annual or perennial. Leaf-blades from filiform and rolled up to flat and several 
mm. wide. Spikelets 2- to many-flowered, in racemes or panicles; rachilla jointed above 
the glumes; flowers perfect or the upper one staminate. Glumes keeled, equal or unequal, 
the lower |—3-veined, the upper 3—5-veined. Lemma awnless or awned, 5-veined, 
convex or somewhat keeled. Palet acuminate to obtuse or notched. Stamens |—3. 
Grain linear or oblong, glabrous, convex on back, grooved or flat on one side, often ad- 
herent. (L. festuca—stalk, straw; hence applied to a straw-like grass growing in barley.) 
A. Annual; stamens |—3. 
B. Spikelets 8—13-flowered. E. 
F, octoflora Walt. (Slender Fescue) 
BB. Spikelets 1—6-flowered. 
C. Panicle short, at least its chief branches divergent. 
D. Glumes hairy. 
E. emma hairy. U. E. 
F, confusa Pip. 
EE. Lemma not hairy. U. (F. microstachys ciliata.) 
F. grayi Pip. 
DD. Glumes not hairy. \ 
F. Lemma hairy. ) 
G. Spikelets 3—5-flowered, 10—12 mm. long; glumes 6—7.5 mm. long. 
Es F, eriolepis Desv. ~ 
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