466 MONOCOTYLEDONEJA. ANDROPOGON. 
81. A. polyatherus (Hochst. in Schimp. pl. Abyss. nr. 290, 
Rich. Tent. Fl. Abyss. 2. p. 455); vaginis internodiis brevioribus ; 
ligula rotundata 1—2 mm. longa; racemis 4—11 cm. longis glabris v. 
strigoso-pilosis ; articulis dorso glabris, marginibus (v. altero margine) 
eiliis rigidulis quam ipsi 2—3-plo brevioribus, altero margine sspe 
infra apicem desinentibus vestitis. 
Culmi geniculato-ascendentes 20—60 em. alti, graciles, inferne 
ramosi, ramis brevibus sepe vagina inclusis. Vagine medio subven- 
tricos®. Ligula glabra. Lamins e basi angustata lineares v. sublan- 
ceolato-lineares, 4—10 em. long&, 3—5 mm. latæ, acuminat&, utrin- 
que pilis basi tubereulatis adspers®, margine scaberrimse, costa media 
tenui haud carinata supra angustissime albo-lineata, nervis laterali- 
bus tenuissimis. Racemi (rarissime terni) a vagina summa plus minus 
remoti, crassi (diam. 4—5 mm.), e viridi et sordide violaceo variegati : 
articuli spicula sessili 2—3-plo breviores, lineares, tenues v. erassius- 
culi, obliquissime disjungentes, disjuncti cupulam inzqualiter denta- 
tam (dente altero sublinguiformi) exhibentes. Spiculz sessiles 6—11 
mm. longs, ovato-lanceolat& v. lanceolat®, apice leviter extus curva- 
tæ : gluma I™ breviter bidentieulata dente altero v. interdum utroque 
setigero, marginibus anguste implicata, carinis nunc alatis nunc tan- 
tum marginatis nune sine ulla dilatatione, scaberrimis, 5—7-nervis, 
. nervis percurrentibus interdum brevibus interjectis auctis, callo 1,2— 
2 mm. longo obtuso breviter piloso (pilis callo subbrevioribus); II^ 
I subzquans, IV* secundä '/, brevior, ad medium usque fissa, laci- 
niis lanceolato-subulatis ciliatis, ad aristze ortum valde gibba ; arist® 
20—33 mm. longs columna fusco-nigra, glabra, subulá rectä 2—3-plo 
. brevior; antherz nune evolutz 2 mm. longze, nune hebetatæ minutæ. 
Stigmata lineari-oblonga. Spicule pedicellatz pedicello spiculam 
mediam zequanti fistuloso, complanato, articulis simillimo insidentes, 
sessiles subzequantes, lanceolatze : gluma I™ acute bidentata, e dente 
altero v. inter dentes aristam glumam dimidiam squantem v. supe- 
rantem emittens, 11—13-nervis, ceterum ut in spicula sessili nisi sine 
callo ; II“ lanceolata, 3-nervis, acuta, sepius breviaristata, retrorsum 
ciliata ; III ut in spicul. 8; IV* paullo brevior, ciliata; antherz 2,5— 
3,5 mm. longs. 
Habitat in Abyssinia. 
Var. a, genuinus; spieulis pedicellatis masculis, earum gluma IV* 
mutica, breviter obtuseque bidentata. 
Subvar. 1. typicus. Plerumque humilis, 20— (raro) 40 em. altus. 
Racemi 4—6 cm. longi; articuli utrinque eiliati, ciliis articulo '/,— 
