TaB. 166. PANICUM VAGINATUM. 



Culmo erecto, simplici^ foliis lanceolatis, superne angustatis, planis, utrinque 

 molliter pubescenti-pilosis ; vaginis glabris, summa aphjlla^ panicula simplici ^ 

 ramis verticillatis , ad basim barbatulis^ spiculis subracemosis , ellipticis^ glumis 

 glabris, insequalibus, inferiore uni-, superiore quinquenervia^ flore masculo-bipa- 

 leaceo, glabro^ hermapbrodito pubescente. 



Panicum vaginatum Nees ab Esenb. AgrosU Bras, p, 166, 



Varietas (3. Foliis glabris^ axillis paniculae nudis. 



Crescit in Brasilia meridionali. % 



Radices simplices, teretes, indivisae, glabriusculae , albida?, crassitie fili emporetici. Culmi 

 elati, erecti, simpUces, teretes, striati, glabri, subq[uadnnodes ( teste Nees); nodis constrictis, 

 pilosiusculis. Folia lanceolata , superne angustata , nervoso-striata , plana , coriaceo-membrana- 

 €ea, utrinc[ue molliter pubescentl-pilosa, 5-6-pollicaria , 4-4 i lineas lata. Vaginoe teretes , usque 

 ad basim fissoe, membranaceae, nervoso-striatae, glabrae , inlernodia superantes, 4-6-poUicares : 

 summa longior, 9-10-pollicaris, aphylla, acutata. Ligula : margo obsoletus , ciliolatus. Panicula 

 e summa vagina longe exserta, erecta, simplex, 3-5 \ pollices longa ; ramis verticillatis ( infimis 

 senis, superioribus ternis vel quaternis), simplicibus, patulis, filiformibus, tereliusculis , sub- 

 flexuosis, elongatis; inferioribus 2-2 ipolllces longis. Bhachis teretiuscula, subflexuosa, glabra, 

 in axiUis ramorum pilis nonnuUis instructa. Spiculae subracemosae, pediceUatac, solitariae, dis- 

 tantes, tres hneas longae , erectae, eUipticae, biflorae; flore inferiore masculo?, superiore herma- 

 phrodito ?, utroque bipaleaceo, sessili ; pedicellis superne incrassatis, glabris. Glumae duae, valde 

 inagquales, membranaceae , glabrae; inferior ovata, superne angustato-acutata, uninervia, cari- 

 nato-concava, flore contiguo masculo duplo triplove brevior; superior duplo longior, ovato- 

 oblonga, obtusa, quinquenervia , concava, flore contiguo hermaphrodito paulo brevior ; nervis 

 tribus interioribus crassiusculis , prominuUs; extlmis tenuioribus, aplce evanescentibus. Flos 

 masculus : paleaeduae; inferior eUiptica, obtusa, concava, membranacea, quinqxienervia , gla- 

 bra, superiorem amplectens; nervls extimls apice evanescentibus; palea superior paulo brevlor, 

 oblonga, apice rotundata, integra vel emarginato-biloba , lobis rotundatis, hyalino-membrana- 

 cea , binervia , glabra, marginibus inflexis. Squamulae duae^ coUaterales, anticae, truncato-dola- 

 briformes, latere exterlore duplicatae, basim utriusque marginis paleae superioris amplectentes , 

 carnoso-membranaceas , glabrae. Stamina tria, hypogyna. Filamenta capiUacea, glabra. An- 

 therae.... Flos hermaphroditus oblongus, acutlusculus, stramineo-flavidus , externe convexus, 

 interne planiusculus. Paleas duae, coriaceae; inferior ovato-oblonga , obtusa, externe pubescens, 

 praesertim apicem versus, qulnquenervia, concava, marginibus superiorem arcte aniplectens ; 

 superlor longltudine inferioris , oblonga , acutiuscula, concava, binervia, externe pubescens, 

 marglnibus genitaUa amplectens. Squamulae ut in flore masculo , nisi paulo robustiores. Stamina 

 tria, hypogyna; unum anterlus; duo lateraha. Fllamenta capiUacea, hyalina, glabra. Anlhcrae.... 

 Ovarlum oblongum , sessile , paleis paraUele compressiusculum , apice exteriore inter stylos acu- 

 mine bilobo terminatiim , glabrum, superne castaneo-fuscum . StyU duo, terminales, elongati, 



127 



