ZOVSIK.R Ti 



Arizona, Loiidioii ; ^Fcxico (State of Jalisco). /^(iJini'r \70. 



\'ar. abortivus Kouni. Mcx. IM. Knum. (iruni. 71 (ISSO). Awn 

 of lloral ii'liiine very siiort, scarcely above the obtuse lobes. Mexico, 

 rri)i!/lr 1-1 OS. 



N'iir. unisetus (IJ. iS: S.) Fourn. I.e. yh\ ii/h'si'/hs \{. & S. Syst. 

 '.':,S(),')(1S17). Tlie central awn of lloral iflnnie of tlie fertile spikeK't 

 projectiiifi' <• iniii., tlie lateral awns less than 1 nun. Ioml::. 



.Mexico, I'l-iiiijir ll(»7. 



;5. JE, gracilis \ascy, Hull. Torr. Club. i;5: 330 (ISS(l). lN>r- 

 eunial; often tiiii^iMJ with red. ('ulius tufted, erect, slender, suutoth, 

 spariuiily branched. .'{O -10 cm. hi^'h. Sheaths two-thirds ns loii^- as 

 the interuodes; liy-ule I -*> nini. lone;: blades lint, linn. I-IJ-/) cm. 

 Iciio-. 1 mm. wi(l(>. I'auicK' racenutsc. IJ-d cm. Ioiil!;, the axis beai'- 

 iiii;' lO-l'i secuud clusters of spiUclets. the clusters consist ini;' of 1 

 scssih' and '2 shoi'l. pcdicclhile spikclcts. Spikclet.s 3-15-1 mm. 

 luui.':, lirst ami second flumes linear, acutely li-lobed, 1 mm. lon<>', 

 llic u'iilille Idlie (>\t(>iulini;' into an awn. 1 mm. loni;'; tlor.al uliiuu' 

 dhloiiL!,'. .■)-ncrved. 3 mm. lonu'. li-awned. lateral awns 3 mm. Ioul;', 

 llic central twice as lon^; j)alea ol»lon_ii:, shortly 3-lootlu'(l. .\nthcrs 

 O.S mm. lonjjf. 



Mc\ico. /'fi/>iirr'l^. 317. aO". and /'/•///-/A' S3:!. 



IS. (t;:,). NaziA Adans. Fam. I'l. 3 : :! I (lUV.)). Tnnjits Hall. 

 Ili>t. Stirp. Ilclv. 3:30:! (KCS). l,ipi>,nji' Schrcl:. (len. :».*) ( I iSil). 

 Spikclcts l-lldwered. mostly in clusters <if 3 "). at Iciii^th deciduous 

 hv a joint, the terminal one often sessile, (he others itu'ludiuL;' a 

 pcrh ct llowcr. the clusters haviuL;' \ery short pedicels on Iheracliis 

 nf the spike. (l:unu'S 3 :!. the lower minute, often absent, the 

 si'coiid empty. stilT. its lu'rves covered with stronij'. hooked prickle-;; 

 till' terminal lloral I shorter, slcndci-; this and die paica hvalinc. 

 Sianieiis :!. Styles slioi't dislincl. sliiiinas |)inmose with lonu hairs. 

 <lrain oblon;^-. enclosed by the Li'liimes. Internoiles id'leii calcliin^- 

 sand ami small insects by means of a sti(d\y substance. 



Two species are very widely distributed in the tropics and 

 uiirmer tenipcfitc eoir i'i(>s. 



I. N. raceniosa (L.) Kunl/r. IJev. Ceii. I'l. :so (ISHiV rv,/- 

 ■ ■hrns nirciinisiis L. Sp. I'l. lOlU (IT.MJ). I,(tp/)(ti/ii rocniKisn W iljd. 



