5. Panicularia Nervata (Willd.) Kuntze. Meadow-Grass. Nerved Manna-Grass

Fig. 636

Poa nervata Willd. Sp. PI. 1: 389. 1798.

Glyceria nervata Trin. Mem. Acad. St. Petersb. (VI.) 1:

365. 1831. Panicularia nervata Kuntze, Rev. Gen. PI. 783. 1891.

Culms 1°-3° tall, erect, slender, simple, smooth and glabrous. Sheaths often shorter than the internodes. usually more or less rough; ligule 1/2" long, truncate; blades 6'-12' long, 2"-5" wide, acute, smooth beneath rough above; panicle 3'-8' in length, open, the branches filiform, spreading, ascending or ofter drooping, rarely erect, 2'-5' long; spikelets 3-7-flow-ered. 1"-1 1/2" long; empty scales obtuse, 1-nerved: flowering scales about 3/4" long, obtuse or rounded with 7 sharp distinct nerves and evident furrows between.

In wet places, Newfoundland to British Columbia, south to Florida and Mexico. Ascends to 4000 ft. in Virginia. Panicle often purple. Meadow Spear-grass, Fowl-grass. June-Sept.

6. Panicularia Grandis (S.Wats.) Nash. Reed Meadow-Grass. Tall Manna-Grass

Fig. 637

Poa aquatica var. americana Torr. Fl. U. S. 1: 108. 1824. Glyceria grandis S. Wats, in A. Gray, Man. Ed. 6, 667.

1890. P. americana MacMillan, Met. Minn. 81. 1892.

Culms 3°-5° tall, erect, stout, simple, smooth and glabrous. Sheaths loose, smooth, or sometimes rough; ligule 1 "-2" long, truncate; blades 7'-1° long or more, 3"-8" wide, usually smooth beneath, rough above; panicle 8'-15' in length, its branches spreading, ascending or rarely erect, 4'-8' long; spikelets 4-7-flow-ered, 2"-3" long; empty scales acute, 1-nerved; flowering scales about 1" long, obtuse or rounded at the apex, sharply and distinctly 7-nerved, the furrows between the nerves evident.

In wet soil, Nova Scotia to Alaska, south to Pennsylvania, Colorado and Nevada. Ascends to 2100 ft. in Pennsylvania. White Spear-grass, Water Meadow-grass. June-Aug.

7. Panicularia Pallida (Torr.) Kuntze. Pale Manna-Grass

Fig. 638

Windsoria pallida Torr. Cat. N. Y. 91. 1819.

Glyceria pallida Trin. Bull. Acad. Sci. St. Petersb. 1: 68.

1836. Panicularia pallida Kuntze, Rev. Gen. PI. 783. 1891. G. pallida Fernaldii Hitchc. Rhodora 8: 211. 1906.

Pale green, culms 1°-3° long, assurgent, simple, smooth and glabrous. Sheaths loose, shorter than the internodes; ligule 2"-3" long, acute; blades 2'-6' long, 1"-2" wide, smooth beneath, rough above; panicle 1 1/2'-7' in length, the branches spreading, ascending or rarely erect, often flexuous, 1'-2' long; spikelets 4-8-flowered, 2 1/2"- 3 1/2" long; empty scales unequal, the first 1-nerved, obtuse, shorter than the 3-nerved and truncate second; flowering scales 1 1/4"-\\" long, truncate and denticulate at the apex, sharply and distinctly 7-nerved, with plain furrows between the nerves.

In shallow water, Nova Scotia and New Brunswick to Minnesota, south to North Carolina and Tennessee. Ascends to 2000 ft. in Pennsylvania. July-Aug.