TRACHVPOGON. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 327 
Ræm. et Schult., Syst. 2, p. 819) mexicanus, a me non visus, non 
differt a var. Montufari typica nisi laminis angustioribus, breviori- 
bus, racemo breviori (5 cm. longo), spieulis c glabris. Vix subvarietas 
propria, potius status macer. 
b. Aristæ subula ad apicem usque longiuscule patenti-pilosa, pilis sursum 
decrescentibus. 
e, truncatus ; laminis planis; spiculis 8 12 mm. longis; aristæ 
6 em. longz columna geniculata. Heteropogon truncatus Nees! Fl. 
Afr. austr. p. 102; Trachyp. truncatus Anderss. 1. c. p. 49; Andro- 
pogon truncatus Steud. Synops. 1, p. 368. — Culmi 50—60 em. alti ; 
folia glabra v. innovationum villosa. Ligula 1—2 mm. longa, truncata. 
Lamins scaberule, 6—15 em. longæ. Racemus robustus, 10—12 cm. 
longus, rhachi glabra; spieule dense imbricatz, c oblongæ, 8 mm. 
longs, inferne brevius, superne longe sericeo-villose, gluma Ir: 
obtusiuseula, retieulato—7-nervis; spicule 8 cum callo 12 mm. 
longz, pilis erectis sericeis dense villos®, gluma I” truncata. Arista | 
validiuscula, columna pilis ipsius diametrum 3—4-plo superantibus 
vestita, subulá Y, breviore, hzec superne breviter pilosula. 
Terra Capensis in districtu Uitenhage (Ecklon). 
t, Gouini; laminis convolutis; spieulis 8 9 mm. longis, ariste 10— 
12 cm. longæ columna irregulariter flexuosa. — Tr. Gouini Fourn. ! 
Pl. Mex. 2, p. 66. Folia glabra, nisi vaginæ nodis barbatze. Ligula 
brevis, truncata, pilosa. Racemus usque 30 em. longus rhachi glabra; 
pedicelli spicularum 9 vilosissimi. Spiculæ villosæ. Arista longissima, 
columna a subula genu interdum subobsoleto distincta, subula ad 
apicem usque longe pilosa. 
Mexico pr. Vera Cruz (Gouin). 
B. Racemi subdigitati, 2—5% (raro plures), intermixtis rarius solitariis. Ariste 
subula scabra v. basi tantum breviter pilosula. 
a. Ariste columna patenti-pilosa, pilis ipsius diametrum duplo v. pluries - 
sup i 
p, plumosus Hack. l. c. p. 265; foliis glabris v. vaginis superne 
hirsutis ; ligula plerumque brevi. — Culmi robusti. Laminse plan v. 
subconvolutz, expanse 4—7 mm. latz, 15—30 em. longz. Racemi 
