f 



-: > 



.^, 



»[-- 



J - 



Panicum.] Clxxiii. geamine^. (J. D. Hooker.) 27 



I smallest and fewest nerved; If. and III usually snbeqnal, 3- X) -nerved 



obloug ovate or lanceolate; III paleate or not. triandroas or neuter; IV 



pajeate, bisexual, oblong ovate or lanceolate, bar lened in fruit, glabrous, 



aorsally convex; palea 2-aerved, membranous or hardened in fruit. Lodi- 



cuieg 2, caneate or quadrate, rarely 0. Stamens 3, apically exserted, 



trraiw free within gl. IV and palea.— Species very many; all warm 

 countries. ^ ^ J J ^ 



I 



Exception, In P. sule^lume, gl. I and II are absent. In P. Crxis-galli 

 ^'- III J3 sometimes produced into a rigid lonj? or short awn. In P. noUxbile, 



J^^'fuummijavanicum, srl. IV is crowned with a short nwn that is concealed by 

 Ps. II and III. 



^nier Paspalum (p. 10), I have given my reasons for removing to that genus 

 excl d*"^"^ ^mi(^ria, which has hitherto been referred to Panicum ; those for 

 M« 1^^ r**w?AoI«/ia and Axonopits will appear under the respeccive genera. 

 ^}mantfiu3 is excluded on less satisfactory grounds. 



T - h 



-'■•^■i 



■tf -I 



^v KEY TO THE SECTTOXS. 



^, A- Spikelets terete or dorsally compressed. 



awn)'h^^-T'^^^^^^^^^^^^ ^<>f Produced hei/ond the termiiiat spikeleta into 



sVrface f fV '^'^^^^^^^^^^' ^ 2.seriate, close-set on the under- 



^^small TV ^^ rachia of a simple spike, globose or ovoid; awn 0; gl. I 

 asimr.1 ^ovQ or less rnorose. — Perennials. Spikes alternate forming 



«ittiple raceme. (Sp. 1-4 ^ r^, 



<*owdedo Vl. "^'°^"^°*''' '^^'^''^'^''''* 3-4-seriate (2-seriate in P. notahile) 

 or ovoid- ^i ,® "^^^'"surface of a simple or rarely branched spike, globose 

 •"ispidat^ • ■ ^ ^^ ^^"^^ ^^ I"^ or shorter, II and HI strongly nerved 

 w cit)wdp,{^^ '"'^^'^'^ awned, IV hard in fruit.— Annuals. Sjpikea alternate 

 n ,A ^"^ usually a simple raceme. {Sp. 6-7.) flo 



Sect ITT "R -• TViM. I^^ip 



% slender ^A9?^^^IA. ^ Spikelefs irregularly 1-2- (rarely 3-) seriate on 

 ^^staut or °^ ^P'ciform brandies of a simple raceme, solitary or geminate, 

 ^"^ ^-anir \ °^"^^ "^ obovoid : gl. I not half as long as III (except 



"•"isealefl vf""]"*^'^!^ ^^^ ^ subequal, awn 0, or IV with a very short awn 

 ,v.. '^^bygls.iIandTTT /.c«^e_1«^ o ^*. 



and III. (6^. 8-18.) 9 1.5 



, Sect. lY rr^ 



'^^cept p. „■ •^■^MENACHNE. Spikelets small, crowded in spiciform panicles 



^'*- Hsualiv ^'r* "* *^<1 ciirvatum) ovoid or lanceolate, sometimes decurved ; 



*«oner than T n °^^ ribbed, I much shorter than III, IV usually much 



, ""' 01 the sr>en;««, „r 11 . . . ... I 



4:h *P«"e8 of this section are very variuble, 



n "^ect. V TIt. 



^^ filiform' if^^^i^^UMJE. Spikelets very small, in pairs or fascicles on 

 repressed- „i °^^es of a lax panicle or simple rachis, dorsnlly much 

 ^- (5j>. 2fi yN*""^ ^1 ^oth much shorter than IV, III and IV lanceo- 



ft ''^e slender y>^^\ Spikelets solitary, rarely binate, sessile or pedicelled 

 ■ "'""«'«w anrl ®^ ^^ ^ decompound usually open panicle. (See also 



^ c«rra/u»e in Sect. Hymenachne.) (Sp. 28-47.) 



^ + r 



V^ - I 



r 

 >- I 



.^ ...^ 



