464 CXLIV. GRAMINER, [ Panicum. 
Series I. Digitarieze. Spikelets mostly in pairs along the outer or lower side of ier 
simple slender branches of the panicle, one of oe ach pair always pedicellate, the other se 
or on & shorter pedicel, the upper ones of ea panh reba, y solitary y, the lower ones 
very rarely clustered. Outer glume nt very 8 
Heinen of the panicle often numerous, the à er ones 
and verticillate, the u eve xd scattered. 
ssile. 
Spikelets 13 to 2 lines nins secs ess silky hai 1. P. eenic 
Spikelets 1 to 13 lines long, more px dem silky e 2. P. divar n 
pik i g, not silky 
ateral n of the third glume ciliate with Zi 
gid h bercles 3. P. macractimum. 
Both Kevin of e "T pair on long capi illary pedicels, 
one pedicel much longer than the other, Spike- 
lets under 1 line long, glabrous or silky hairy . 4. P. papposum. 
Branches of the — i w, digitate or «crai at 
, glabrous Md 6. P. sanguinale. 
Branches usually 2. pikelets o of each pair dissimilar, 
up on ciliate, with rigid hairs 
seated on tubercles on the lateral nerves of the . 
3r e, the lower one usually with a male 
E flower only and no ye 6. P. ctenanthum- 
Branches = the panicle scattered o the upper ones 
pproximate, the lower ones a clustered and 
not verticill 
a 
ranches usually 2, A 1 to li in. long. Spike- 
ets narrow, about 1 line lon 
. P. stenostachyum. 
Branches usually 3, distant, : to 12 in. n. long. "Spike- 
-1 
. P. tenuissimum, 
E 
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a 
o 
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ong 
Branches o; goi 2 to 6 in, lon ng. ‘Spikelets 
pape to T: line long, the lower ones often : 
9. P. parviflorum. 
Branches. tin lerous, 2 to 6 in. long. ‘Spikelets 
1 line long, silky hairy sie d end in some 
» fe ovd as eS inn pairs also in P. prostr atum, and occasi y 
sessile 
s IL. Trichachnex. Spikelets silky hairy, or fringed with long i? be 
pedicellate, pig ston or Pii in gant along the rhachis of the sump 
dike panicle or of the ; 
sate En edd pairs, about 1 line 
hairy, the — glume deficient. . . 1k P. gibbosum. 
singer es few or spike single. Spikele 
g: outer 
sem peceduts Jo; t small and often concealed by 
Die lob g silky 12. P. leucophaum- 
Spike-like i aatis f fow. ` Spikelets 2 to n n long, 
with long hairs connected 
Bain lumies ominent 
OMM HE E E with fine pointe . 18. JP. semialatum. ^ 
1 or 
rows, very i rs ia gabe: Pape curat mn sessile or very gi dit nor in «or 
» the short simple alternate often 
Ee se pet ly a slepia torirital Spite: 
= Spikelets usuall ne 
= single, eel. y : 
distant or the lowest i in pairs. glabrous, sin 
