IIo GRAMINEAE. 
) : 1. Amphicarpon Amphicarpon (Pursh) 
4 Nash. Amphicarpon. (Fig. 238.) 
\) / Se Stage amphicarpon Pursh, Fl. Am. Sept. 1: 62. pi. 2. 
Pee ctliatum Muhl. Gram. 77. 1817. 
Y, | Amphicarpum Purshii Kunth, Rev. Gram. 28. 1829-35. 
j Amphicarpon Amphicarpon Nash, Mem. Torr. Club, 
/ 5:352. 1894 
— " 
Y \ Culms erect, 12/18’ tall, slender, glabrous. 
YY Sheaths papillose-hirsute; ligule pilose ; leaves 1/-6/ 
I long, 2/’-6’’ wide, erect, acuminate, hirsute and 
3) // If a ciliate ; panicle linear, 4’-6’ long, branches 3-4, erect, 
4 aps. SQ bearing few spikelets; spikelets about 2’/ long, ellip- 
AS tic; outer scales 5-nerved, membranous, glabrous ; 
ae, Thy NX <* subterranean spikelets ovoid in fruit, about 3’/ long, 
dh 4h | | Ne acute, the scales all becoming much indurated. 
La y \ f <—s In moist pine barrens, New Jersey to Florida near the 
\ 4 \ coast. Aug.—Sept. 
io. ERIOCHLOA H.B.K. Nov. Gen. I: 94. ‘1815. 
[HeLopus Trin. Fund. Agrost. 103. 1820.] 
Perennial grasses with flat leaves, and short-pedicelled spikelets borne in secund spikes. 
which form a terminal panicle. Spikelets with an annular callus at the base and articulated 
to the pedicel. Scales 3, the two outer membranous, acute, the inner one shorter, indurated 
and subtending a palet and a perfect flower. Stamens 3. Styles distinct. Stigmas plumose, 
Grain free. [Greek, signifying wool-grass. ] 
Species about 5, in tropical and temperate countries. 
1. Eriochloa punctata (I,.) W. Hamilt. 
Dotted Millet. (Fig. 239.) 
Milium punctatum V,. Amoen. Acad. 5: 392. 1759. 
Eriochioa polystachya H.B.K. Nov. Gen. 1: 95. pl. 32. 
J 
1815. ; y 
Eriochloa punctata W. Hamilt. Prodr. Pl. Ind. Occ. 5. \ 
1825. 
Culms erect or ascending, 1°-3° tall, glabrous. 
Sheaths glabrous or sometimes pubescent; ligule a 
fringe of short white hairs ; leaves 2’-10’ long, 2’/— N 
3// wide, acuminate, glabrous or pubescent ; spikes Qj 
4-25, 1/-2’ long, sessile or nearly so; rachis pubes- ) \ \ 
cent; spikelets about 2’” long, ovate-lanceolate, Vy, \ NI / 
acuminate; outer scales pubescent with appressed j Z | SSI] F 
| Z \ \ | 
LA \ y 
\ / tA 1 | << 
Fos 
silky hairs, the first a little exceeding the second, 
the third about 1’’ long, rounded at the apex and 
bearing a pubescent awn about 4’ long. 
x 
11. SYNTHERISMA Walt. Fl. Car. 76. 1788. 
[DiGiraRiA Scop. Fl. Carn. Ed. 2, 1:52. 1772. Not Heist. 1763.] 
Annual grasses with flat leaves, and spikelets borne in pairs or sometimes in 3’s, in 
secund spikes which are digitate or approximate at the summit of the culm. Spikes often 
purplish. Scales of the spikelet 4, sometimes 3 by the suppression of the lowest one; the 
fourth or innermost scale chartaceous, subtending a palet of similar texture and a perfect 
flower. Stamens 3. Stigmas plumose. [Greek, crop-making, in allusion to its abundance. ] 
About 20 species, widely distributed in temperate and tropical regions. 
Rachis flat, broadly winged; spikes narrowly linear. 
Spikelets 14'’—1!4'' long; second scale about one-half as long; first minute, rarely wanting. 
- 1. S. sanguinalis. 
Spikelets about 1'’ long; second scale about as long; first scale wanting, rarely present. 
2. S. linearis. 
Rachis 3-angled, not winged; spikes filiform. 3. S. filiformis. 
Kansas to Texas and Mexico. Widely distributed 
in tropical America. 
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