ANDROPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 411 
apice scabriuscula, margine subeiliata; II subcymbiformis, dorso 
convexo lævi nitido, apice marginibusque subeiliata ; III* et IV* multo 
breviores, hyalinz, bifide. Arista 15 mm. longa, perfecta, subtortilis, 
« e fundo floris orta. » Pedicelli extus convexi apice dilatato subbifidi, 
glabri, nitidi, purpureo-punetulati. Spicule pedicellatze c? gluma I» 
lanceolato-linearis, acuta, scabriuscula, II“ lævis, nitida, inferne con- 
vexa, superne carinata, carina in aristam brevem desinente. 
Guinea. — Ab auctore cum A. distachyo comparatus, sed propter 
glumam I" canaliculatam pedicellorumque indole potius ad A. 
schirensem, etc., accedens, quamvis certe distinctus. Glum& I® et 
II** (« exterior et interior ») spiculz sessilis in descriptione ab auctore 
certe commutatz, id quod correxi. Ariste ortus vix recte descriptus. 
Species dubia. 
A. tectorum Schumacher Beskriv. Guin. Pl. p. 69 in Guinea 
communis, ex Benth. in Hook. Nig. Fl. p. 572 etiam in Sierra Leone. 
Descriptio 1. c. nihil continet, ex quo affinitatem divinares, dijudicares- 
. que utrum jam inter species a nobis descriptas lateat necne. 
A. juncifolius Desv. in Hamilt. prodr. p. 9; Opusc. p. 67. Culmi 
cæspitosi, subpedales, apice dichotomi; vagin: nodis pubescentes, 
ligula lanceolata acuta; lamin& lineari-subsetaceze glaberrims; racemi 
bini spathá fulciente breviores, pollicares, rhachi dense lanosa ; spi- 
cule geminæ sessiles glabrz, acutz, fertiles aristat®, arista tortili, 
steriles abortive. Hab. in ins. St Crucis Antillarum. — Vix recte - 
descriptus, nam spieulze steriles in nullo Andropogone sessiles sunt. 
Anatherum scoparium Desy. Opusc. p. 70 ab A. bicorni spi- 
culis duplo majoribus, magis sibi approximatis, villis longioribus 
differre et in Africa crescere dicitur. 
Subgenus 6. LaAsroRHACHIS. 
Racemi subcompositi in panicula vera culmum terminante sessiles, 
3—$-artieulati; rhacheos fragilis articuli filiformes, angulati, sine 
sulco longitudinali, disjuneti apice non appendiculati, undique villosi. 
Spiculæ sessiles omnium parium 2 , a dorso compresse, breviaristatze : 
