496 - GRAMINACEAE. [Panicum 
— Gray, Man. Bot. p. 577. — Digitaria ne eg Muehl. — Griseb. Fl. 
W. Ind. p. 543. — Paspalum filiforme, Fluegge. — Kunth, |. c. p. 46. 
Collected by the U. S. E. Exp. «in a valley behind Honolulu, Oahu» (herb. Gray). = 
The species is American, extending along the eastern coast from Massachusetts to Brazil. 
** Echinochloa. 
3. P. colonum, L. See eud. 1. c. p. 46. — Erect, 1—2 ft. high, the 
stem compressed, once “or twice dividing, distantly etioan, Leaves flat, 
acute, 8—5‘ long, Bite us, with rough margins, the sheaths shorter than 
their internodes; ligule wanting. Spikes 8—12, almost sessile, single, 
undivided and erect, 1/2—1/ long, forming a simple narrow one-sided 
panicle of 3—4/‘ in Joneie Spikelets 1!/2“’, pale, plano-convex, acuminate, 
subsessile in fascicles of 2 or rarely 3, with a few (2—4) long ciliae at 
their bases, crowded in mostly 4 rows on the outer side of the scaberulose 
rhachis. Sterile Sees ithesy along the nerves, ovate-acuminate, the 
lowest 1/s the length of the spikelet, the second and third 5-nerved, of 
equal size and as long as or a little longer than the fertile floret, the 
third glume pointed and supplied with a narrow hyaline palea of nearly 
equal length. Fertile pie and palea coriaceous, shining. — Oplismenus 
colonus, Kunth, 
8 var. — A scuaehat larger plant with a panicle of 5—6’, its longer 
branches or spikes more numerous, sometimes in fascicles wd slightly 
compound, the lowest 1—2‘ long. Third glume submucronate and even 
shortly awned in the spikelet Waieh terminates the branch. Spikelets 
pale. — This form may with uch right be referred to the next 
species, of which it would Ste an awnless variety. 
— ee in wet places, ae the borders of — s and «taro»-ponds; the var. 
pm re common than g, It is found in most tropical and some subtropical coun 
Kaa A rnieaaiy allied species, P. phot aipmle m, Roxb., is alive for its grain in India. 
4. P. crus- -galli, longiseta, Trin. — Icon. tab. 162. — Steudel, 
l. c. p. 47. — A coarser and taller grass than the one preceding, 
3 ft. nigh, the stem eyo and dividing below, compressed or angular 
ove. Leaves as in no. 2. Panicle about 6‘, pyramidal with numerous 
a2 24) rather patent ae the lowest 1—2‘ long, often 2 or more 
and not rarely sending out branchlets; the rhachis hispid 
with numerous bristles. Spikelets in fascicles of 2 or r rarely 3, purplish- 
green, spindle-shaped, the lateral ones plano-convex, 1'/2 long. Sterile 
glumes stiff-hairy along the we & the lowest 1/3 the length of the 
spikelet, 1-nerved, pointed; t as long as the spikelet, 5-nerved 
(the outermost nerves sinc ted mucronate or shortly awned; the third 
5- ameilsiging sings = lateral nerves approximate and ending in a purplish 
stiff of about 1°‘ in length, a eaactiee with a hyaline palea 
of its own lene Fertile glumes as before, — Oplism erus-galli, Kunth, 
lc. p. 143. — P. ech inatum, Willd. — P. asda Nees. 
