2 C. arundinacea Willd. Culm and leaves as in No. 1. Plant bright green; panicle purple and green, erect and with ascending or erect branches which arc floriferous more than half their length; glumes 3" long, lanceolate, lower paleae awnless or the awn scarcely equaling the obtuse point - U. S., in shady woods, chiefly southward. A finer looking grass than the preceding. Jl., Aug.

7. MUHLENBER'GIA, Schreber. Drop-seed Grass. (In honor of Henry Muhlenberg, D,D,, an eminent American botanist.) - Spikelets 1-flowered, fl. sessile in the glumes and mostly bearded at the base; glumes 2, unequal, shorter than the pales, acute or awned, sometimes minute, the lower rarely obsolete; pales 2, the lower awned or mucronate at apex, upper 2-keeled; stam. 3 - 2; stig. 2, plumous; caryopsis free. - Culms often branched. Panicles simple, mostly contracted.

§ Muhlesbergia. Glumes manifest. Panicles slender, terminal and lateral. (*)

* Glumes awned and twice longer than the awnless paleae......................

No. 1

* Glumes pointed, not longer than-the mucronate paleae.........................

Nos. 2, 3

- the long-awned paleae......................

Nos. 4, 5

§ BRACHYELYTRUM. Glumes minute, the lower obsolete. Panicle slender..............

Nos. 6, 7

§ TRICHOCHLOA. Glumes small, both present. Panicle diffuse, capillary.............

No. 8

1 M. glomerata Trin. Glaucous; culm compressed, erect, smooth, with ap-preased branches or subsimple, 1 1/2 - 4f high; lvs. somewhat 2-rowed, erect, flat, rough, 3 - 5' long, with closed sheaths; panicle spicate, dense, conglomerated, interruptea, 2 - 3' long, many-flowered; glumes linear, 1/2 the length of their awns; lower paleae mucronate. -Order CLVI Gramineae Grasses Part 4 2467 Bog meadows, also on rocky mountains, N. Eng, to Mo. Ausr., Sept. (Polypogon racemosus Nutt.)

2 M. Mexicana Trin. Culm erect or ascending, with swelling nodes, much branched and leafy above, often nearly leafless below, 1 1/2 - 3f high; lvs. lanceolate, scabrous, with half-clasping sheaths; panicles numerous, terminal and lateral, spike-clustered, dense-flowered and purple-spotted, lateral ones partly enclosed in the sheath; glumes narrow acuminate, mostly shorter than the subequal, pubescent pales. -Order CLVI Gramineae Grasses Part 4 2468 Wet shades, N. Eng. to Wise, common. Aug. (Agrostis L.)

3 M. sobolifera Gray. Culm erect, slender, producing shoot3 at base, branched, 18 - 30' high; branches erect and liliform; nodes not swelling; lvs. linear-lanceolate, with open sheaths; panicle simple, filiform, with appressed branches, and rather crowded spikelets; paleae equal, longer than the acute glumes. -Order CLVI Gramineae Grasses Part 4 2469 Rocky hills, N. Eng. to I11. and S. States, frequent. Aug. (Agrostis Muhl.)

4 M. sylvdtica Torr, & Gr. Culm ascending, 2 - 3f long, much branched, diffuse, smooth, with swelling nodes; lvs. lanceolate, scabrous, veined, 4 - 6' long, with smooth, open sheaths; panicles slender, rather dense; glumes nearly equal, acuminate, a little shorter than the paleae; awns several times longer than the spike-let -Order CLVI Gramineae Grasses Part 4 2470 Rocky shades, N. Y. to I11., N. J., Penn. Sept. (Agrostis Torr.)

5 M. Willdendwii Trin. Culm erect, subsimple, pubescent at the nodes, with a few appressed branches; lvs. 6 - 9' by 2 - 3', lanceolate, veined, scabrous. spreading, with pubescent sheaths; panicle contracted, very slender and long, with remote, filiform branches; glumes subequal, acuminate, half as long as the paleae,; awn 3 - 4 times the length of the spikelet. -Order CLVI Gramineae Grasses Part 4 2471 Rocky woods, Can. and U. S. July, August. (Agr. tonuiflora Willd.)

6 M. diffusa Schreb. Culm decumbent, diffuse, Uranching, slender, compressed: branches assurgent; lvs. 2 - 3' by 2", linear-lanceolate, rough, with smooth, striate, open sheaths; panicles terminal and lateral, with remote, appressed. rough branches; spikelets 2" long, pedicellate, often purple; awn about as long as the paleas; glumes extremely minute. -Order CLVI Gramineae Grasses Part 4 2472 Borders of woods and shady fields, N. Eng. to Car. and Ky. Aug.

7 M. aristata Pers. Culm erect, simple, retrorsely pubescent at the nodes, 2 - 3f high; lvs. lanceolate, scabrous, ciliate on the margin, 4 - 6' long, 3" or more wide, with somewhat open sheaths; panicle terminal, simple, racemous, contracted; spikelets 6" (16" including the awn) long, pedicellate; glumes minute, the lower obsolete; lower paleae half as long as its awn, upper paleae with a short awn (abortive pedicel) at base lodged in the dorsal groove. -Order CLVI Gramineae Grasses Part 4 2473 Rocky hills, Can. and U. S., frequent. July. (Brachyelytrum Beauv. M. erecta Roth.)

8 M. capillaris Kunth. Caespitous; culms erect, very slender and smooth, 18 - 24'high; lvs erect, becoming filiform towards the end. 1 - 1 1/2f long; panicle diffuse, with the branches 1 - 4' long, in pairs, and as fine as hairs; spikelets purple; lower paleae produced into an awn 3 or 4 times its length. -Order CLVI Gramineae Grasses Part 4 2474 Sandy soils, N. Eng. to Ga. and Ky. An exceedingly delicate grass, with large, purple, glossy and almost gossamer-like panicles, waving in the breeze. Jn., Jl. (Tri-chochloa DC.)

8. POLYPO'GON, Desf. Polypog Grass. (Gr.Order CLVI Gramineae Grasses Part 4 2475 many, Order CLVI Gramineae Grasses Part 4 2476 beard.) Spikelets 1-flowercd, densely panicled; gls. 2, subequal, thin, carinate, both similarly awned, much longer than the flower; pales thin, the lower usually awned near the tip, upper bicarinate; grain free, oval, smooth. - Leaves flat. Panicle spikedike.

P. Monspeliensia Desf, Culm simple, decumbent below, If or mora high; lvs. lance-linear, much shorter (2 to 5 by 2 to 3"), acute-pointed, minutely downy; panicle much-branched, spicate-lobed, 2 to 3', the branches very short and dense-flowered, pale; gls. hispidulous, 1" long, the awns a, little longer. - Fields, coast-ward, N. Eng. ? common South. § Eur.

9. CALAMAGROS'TIS, Adans. (Name compounded of Calamus and Agrostis.) Spikelets 1-flowcred; glumes 2, subequal, acute or acuminate; paleae 2, mostly shorter than the glumes, surrounded with white, bristly hairs at base, lower one mueronate, mostly awned below the tip, the upper one often with a stipitate pappus (abortive rudiment of a second flower) at base. -Order CLVI Gramineae Grasses Part 4 2477 Rhizomes creeping. Culms simple, tall, with a contracted or open panicle.