Neue Arten der Gattung Pennisetum. 75 
subulatim convolutis, nervo medio tenui praeditis, rigidis, glabris laevi- 
busque. Culmi validissimi, teretes, cum nodis apicem usque glaberrimi 
laevesque. Inflorescentia subpaucivel submultiflora, strieta, densissime 
spieiformis, cylindrica apicem versus acuta, plus minus 70 mm longa et 
13 mm diam. metiens; axi recto, leviter sulcato, brevissime pilosulo; 
fasciculis fere sessilibus, suberectis vel suberecto-patentibus, e spicula 
unica sessili setisque multis omnibus scabris nec pennatis, nulla promi- 
nente longioribus ad 9—7 mm longis compositis; spieula 1-flora, lanceo- 
lata, acutissima, plus minus 4,5 mm longa, subglabra; gluma I. spiculam 
fere ad !/, aequante, ex ovato acuta, 1-nervia; gluma Il. spieulam ad 
3/, aequante, ex elliptico mucronata, 7-nervia; gluma III. quam paleae 
re) breviore, ex elliptico longe mucronata, 5-nervia; palea inferiore glumae 
praecedenti isomorpha sed apice latius rotundata, 5-nervia, paleam 
superiorem sensim acutam paullo superante; antheris haud penicillatis; 
stylis a basi liberis, stigmatibus lateraliter e spicula porrectis. 
Argentinien. 
15. (39.) Pennisetum rigidum (Griseb.) Leeke, 1. c., p. 36. 
Gymnothrix rigida Griseb.! in Goett, Abh., XIX (1874). 263. 
Argentinien. 
16. (40.) Pennisetum purpurascens (Thunbg.) O. Ktze. forma 23. chinensis 
(Nees nov. spec.) Leeke, l. c., p. 37. 
Penicillaria chinensis Nees! ex Steud. Nomencl., 2, ed. II (1840—1841), 
297. — Pennisetum chinense (Nees) Steud.! Syn. pl. glum., I (1855), 108. 
Inflorescentia e setarum colore pallida differt, 
Korea, China. 
17. (47.) Pennisetum caffrum (Bory) Leeke, |. c., p. 39. 
Aristida caffra Bory! Voyage, II (1840), 376. — Gymnothrix Thouarii 
Beauv.! Essai Agrost. (1812), 59, t. 13, f. 6. — G. Thouarsii Steud. 
Nomencl., 2 ed. (1840—1841), 386. — Panicum Thuarii Rasp. in: Ann. sc, 
nat, 1 ser, V (1825), 299. — P. aristidoides Willd.! ex Spreng. Syst., I 
(1825), 302. — @. cenchroides R. et Sch. Syst., II (1817), 499. 
Mauritius, Bourbon. 
18. (48.) Pennisetum Mezianum Leeke, l. c., p. 39. ; 
Perennis, prostrata vel erecta, 0,8—1 m alta, saepius foliorum comas 
scoparias in culmo superpositas proferens. Folia vaginis superne saltem 
acute carinatis, glabris laevibusque; ligulis brevibus truncato-rotundatis, 
pilosis; laminis anguste linearibus, basi haud contractis apicem versus 
sensim acutis, chartaceis vel rigidulis, nervo medio manifestiore destitutis 
usque 0,15 m longis et 4 mm latis mihi visis, saepissime sat linearibus, 
glauco-viridibus, praeter apicem paullo scabridulum laevibus, glaberrimis. 
Culmi fasciculatim multiramosi, teretes, cum nodis glabri laevesque. 
Inflorescentia subpauci-vel pauciflora, erecta, longe nunc longissime 
stipitata, brevissime cylindriea et utrimque rotundata vel saepius ellip- 
soida, usque ad 25 mm longa et 11 mm diam. metiens mihi obvia, sueto 
plus minusve 15 mm longa, per athesin sueto grisea; axi valido; fasci- 
culis suberectis, sessilibus, e spicula unica et setis dimorphis, omnibus 
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