192 MONOCOTYLEDONER. POGONATHERUM. 
l-nervis, ejus arista illam glum:e Il?» subsuperans. Palea ovalis, 
obtusa v. obtusissima, interdum denticulata, glabra v. ciliolata. 
1. P. saccharoideum (Beauv. Agrost., Expl. d. pl. p. 9, Tab. 11, 
f. 7); vaginis ore fimbriatis, nodis barbatulis, spiculæ sessilis 2—3 mm. 
long: gluma I™ truncata. — P. crinitum Kunth. Enum. 1, p.478 (ubi 
perperam Trinius auctor citatur); Ischemum crinitum Trin.in Mém. 
Ac. Petersb. ser. 6, vol. 2, p. 298; synonyma reliqua vide sub varr. 
Culmi 10—50 cm. alti, graciles, modo ab ipsa basi, modo superius 
tantum ramosi; rami primarii solitarii, raro simplices, sepius a basi 
alternatim per interstitia brevia ramulos secundarios, hi rarius tertia- 
nos basilares gignentes, ramis ramulisque filiformibus v. tenerrimis, 
glaberrimis, foliatis, subfastigiatis, cunctis paniculam spuriam subco- 
rymbiformem efformantibus. Vaginæ subcompressz, laxiuscule, læ- 
ves ; ligula subobsoleta, glabra sed intus pilis longis stipata. Lamin® 
2—5 em. longze, 1—4 mm. lat®, summa ramulorum abbreviata, flac- 
cidulæ, patentes, subcanescenti-viridule, utrinque margineque præ- 
sertim ad nervos tuberculato-scabrze v. scaberule. Raeemus pedunculo 
scaberulo anthesi arcuato demum recto insidens, subgracilis, 1,5— 
3 em. longus, aristis fulvescentibus densis erinitus ceterum fulvus v. 
ferrugineus ; articuli pedicellique spicula 2—3-plo breviores, lineari- 
filiformes, apice subdilatati, depresso-trigoni, dorso scabri, marginibus 
(altero szepe longius) albo-eiliatis, ciliis sursum aeerescentibus summis 
articulo zequilongis v. 2—3-plo longioribus. Spicule sessiles lineari- 
` oblongæ, fulvæ, callo minuto pilis albidis barbato; gluma I** late 
lineari-oblonga, apice sepe subemarginata, 2—3-nervis (nervo medio, 
ubi adest, brevi), praeter apicem callumque glabra, scaberulo-punc- 
tata, rarius hispidula; II^ T conspicue superans, late lanceolata, 
obtusiuscula, carina hispidula v. scaberrima, aristam 12—14 mm. 
longam patulam v. demum angulo recto patentem exserens ; IV* quam 
II“ paullo brevior, hyalina, linearis v. lineari-oblonga, bidentata v. ad 
'/, usque fissa, 1-nervis, glabra v. ciliolata ; arista imperfecta v. sub- 
perfecta i. e. basi spiris 1—2 instructa, capillaris, tota longitudine 
laxissime torta, basi demum geniculato-patens v. reflexa, 16—20 mm. 
longa, basi brunnescens, superius fulva. Spiculæ pedicellatæ sessilibus 
paullo breviores, oblique lineari-oblong: ; gluma I= 1-nervis (nervo 
excentrico), III: O, aristz iis spiculz sessilis subbreviores, ceterum 
huic simillimze. 
Structura spicularum admodum variabilis; inde varietates 2 sequen- 
tes formis intermediis crebris conjunguntur. 
