Saccharum L. 49 



florescentia et flores plane varietat. 7., sed lana bracteis infi- 

 mis plus duplo tantum longior. 



{>. luridum. — Nom. sund. : T, rdpu; — differt ab 

 antecedente : caule ad partem foliiferam 4 — 8, dein 8 — 7 ped. 

 alto (toto 12 — 15 ped.); articulis 10 — 30, lurido-rubenti-viri- 

 dibus, ad basin rubris , ad apiccm glauco-canis, haud con- 

 strictis ; foliis serrulatis , vaginis glauco-pruinosis , panicula 

 longe exserta 2,0 — 2,5 poll. alta, ramis decompositis , lana 

 bracteis infimis triplo longiore. 



i. fumosum. — Nom. sund. : T. dsrep s. dsrap ; mal. ; 

 T. dssap. Caulis gracilior erectus, in sterilibus cultus 4 — 5 

 ped. altus, in fertilibus 9 — lOped. altus, parte foliata in utro- 

 que 6 — 7 ped. alta, ad articulationes haud constrictus; articuli 

 cylindrici 2,5 — 4,0 poll. longi, 1,0 — 1,5 poll. crassi (in ste- 

 rilibus 0,5 poll.), baseos atro-violacei, medii culmi violaceo- 

 rubri, ± rore albido obtecti, glaberrimi, laevissimi; pars fo- 

 liacea adpresse ramosa; rami rubro-virescentes ; foha late li- 

 neari-lanceolata, 3,5 ped. longa, 2,5 poll. lata, margine serru- 

 lata, cuspidata apice convoluta, saepe subulata, glaberrima, 

 atro-viridia, nervo rubenti, jimiora subtus lurido-rubra ; vagi- 

 nae aut solummodo ad basin aut totae lurido-rubrae, glaber- 

 rimae; lingula truncata, minuta, scariosa, ad latera pilosa; 

 panicula longe exserta ramosissima, erecta, aequalis subcon- 

 tracta; axis obsolete tetragona, 4-canaliculata, sanguinea ; rami 

 hinc inde subverticillati, infimi decompositi ; ramuli infimi ad 

 basin fere ramorum; ramuli saepius denuo ramosi; ramuli 

 secundarii 5 — 7-spicati, erecti, versus apicem cemui, axi san- 

 guinea articulata, post anthesin articulatim secedenti, filifor- 

 mes, elongati, imbricati, completi, vagi ; spiculae geminae, altera 

 infera sessilis, superior articulato - pedicellata, biflorae; flores 

 a, sed bracteae superiores sub-4-nerviae, lana magis canescens 

 quam in varr. rel. 



X. n i g r u m ; — Nom. sund. : T. hidmig s. T. hiirum gede. — 

 Caulis erectus atro-violaceus, basi viridiusculus, apice rubens, 

 pruina cinerascente hinc tectus, ad foHa 12 ped. altus; articuli 

 45, longitudine 1,2—4,0 polL, 1,5 — 2,0 poll. crassi; pars 



4 



