46 Ex herbario Hassleriano: Novitates paraguarienses. IV. 
XIX. Gramineae III. auct, E. Hackel. 
96. Panicum (Digitaria) Fiebrigii Hack., nov. spec. 
Annuum. Culmi erecti circ. 70 cm alti, graciles, compressi, laeves, 
3—4-nodes, inferne parce ramosi, superne breviter nudi, ibique pilis 
tenuibus patentibus laxis vestiti. Folia glaberrima. Vaginae laxiusculae, 
subcompressae, haud carinatae, internodia circ. aequantes. Ligula ovata 
vel ovato-oblonga, obtusa, 1—2 mm lg. Laminae e basi subangustata 
lineares, tenuiter acuminatae, planae, ad 35 cm lg., 4 mm lt., flaccidulae, 
virides. tenuinerves. Racemi 3—4ri approximati, in rhachi communi 
1—2 em lg. glabra scaberula alterni v. oppositi, subaequilongi, 12—15 cm 
lg., graciles, flacciduli, rhachi speciali tenuiter setiformi (0,5 mm lata) 
scabra, pedicellis ternis v. quaternis valde inaequalibus, primariis circ. 
4 mm secundariis 2,5 et 1 mm, tertiano, ubi adest, vix 0,5 mm longis, 
omnibus porrectis subeapillaribus scabris, ternioribus inter se circ. 4— 
5 mm distantibus. Spiculae ovato-lanceolatae, 2,2—2,5 mm longae, 1 mm 
latae viridulae vel leviter rufescentes, plus minus dense albido- v. fulvido- 
pubescentes v. villosulae. Gluma I. nulla; II. spiculam aequans, ovato- 
lanceolata, acutiuscula, 3-nervis, prope nervum medium brevius. versus 
margines longius pubescens, pilis rectis apice subclavatis albidis vel 
rufidulis, marginalibus ad 0,5 mm longis; III. spiculam aequans, II dae 
similis, 5-nervis, ad latera nervi medii glabra. ceterum ut IL villosula v. 
pubescens; IV. spicula paullisper brevior, elliptico-lanceolata breviter 
subacuminata, parum convexa, demum badia v. atrofusca, in longitu- 
dinem striata, marginibus paleam aequilongam acutiusculam planam late 
amplectens. 
Paraguay: Paraguaria septentrionalis, a. 1909, leg. Fiebrig no. 5371, 
5375 in Herb. Hassler. 
Affine P. adusto Nees, quod differt radice perenni-eulmo innovationi- 
busque basi squamatis, culmo tereti glabro, laminis rigidis siccitate con- 
volutis, racemis numerosis, gluma I. 5-, II. 7-nervi, hac spicula breviore. 
Variat glumarum pube breviore rufescenteque (no. 5375) vel longiore 
(in glumae (Ulass apice subpennicillata) albida vel fulvescente (no. 5371). 
Ab affinibus culmo superne longe sed parce patentim piloso facile di- 
gnoscendum. 
97. Setaria Liebmanni Fourn. in Hemsl. Biol. C. A., III, 505. 
Forma trichorhachis Hack., nov. form. 
Differt a typo rhachi hirsuta. 
Paraguay: Parag. septentr. a. 1909, leg. Fiebrig no. 4569 in Herb. 
Hassler. 
98. Olyra semiovata Trin. Gram. Panic., 249. 
Var. pubescens Hack., nov. var. 
Differt a typo gluma fertili toto dorso pubescente, 
Paraguay: Parag. septentr. a. 1909, leg. Fiebrig no. 5299 in Herb. 
Hassler. 
99. Chloris bahiensis Steud. Syn. Pl. Gram., 208. 
Forma glabrescens Hack., nov. form. 
Ed 
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Eos 
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