Tab. i65. PAJYICUM ferrugineum. 



Culmis simplicibus^ nodis imberbibus^ foliis convolutis, ris^idis vadnisque ela 



vagmisqu 



bris, interne sulcatis, scabriusculis^ spicis quaternis vel senis , fasciculato-congestis 

 spiculis ternis, pedicellatis, ovato-oblongis^ gluma inferiore nulla, superiore tri 



4 



nervia, ferrugineo-villosa 5 flore hermaphrodito glabro^ neutro qainquenervio 

 ferrugineo-villosoj dorso glabro, bipaleaceo^ palea superiore minuta. 



Panicum ferrugineura Kunth^ Revision de lafamille des Graminees^ tom. i 



Trichachne ferruginea Nees ab Esenb* Agrostogr, BrasiL 2.p. ^o 



y 



Crescit in Montevideo. %, 



Radix fibris fillformibus , fascis, ramosis, glabris. Culmi cgespitosi, erecti, slmplices, gra- 

 ciles, teretes, striati, glabri, flavidi, adjectis spicis 25-56-poJlicares j nodis imberbibus , fuscis. 

 Folia anguste linearia , convoluta, rigida, elongata, arcuata vel subflexuosa, externc striata et 

 glabra, interne sulcata et scabriuscula , io-i5-poUicaria, vix sesquilineam lata. Vaginae teretes , 

 usque ad basim fissae , striatae , glabrae, internodiis longiores. Ligulaovata, obtusa, glabra, tar- 

 diusfissa. Spicae quatuor velsex, inapice culmi fasciculato-congestae, alternae, sessiles, subfas- 

 tigiatae, erectae, 3 ^-6-pollicares. Rhachis tenuis, triangularis , striata, undulato-flexuosa , an- 

 gulis scabriuscula , virescenti-albida. Spiculae per ternas fasciculato-congesta? , fasciculis remotis , 

 inaequaliter pediceUatae , ovato-oblongae , biflorae, vix sesquilineam longae; flore inferiorc neu- 



r 



tro, superiore hermaphrodito ; pedicelliscompressis,margIne, praesertim superne scabriusculis ; 

 longioribus tres Uneas longis , reUquis gradatim brevioribus. Gluma inferior nuUa (mlnutissima, 

 truncata, testeNees); superior ovato-oblonga !, obtusa, trinervia, membranacea , subconcava, 

 externe piUs ferrugineis sericeis rlgidis denslssime viUosa, flori hermaphrodlto adpressa ipsoque 

 dimidio brevior. Flosneuter bipaleaceus; palea inferior oblonga , obtusa, qulnquenervia , mem- 

 branacea, utroque latere apiceque plUs ferrugineis rigidis sericeis densissime villosa, dorso gla- 

 bra, planiuscula, marginibus florem hermaphroditum paulo amplectens ; palea superior minuta, 

 plana, ovato-oblonga, acuta, hyaUno-membranacea, glabra. Squamula unlca, hyaUna, apice 

 rotundato-retusa, glabra. GenitaUa nuUa. Flos hermaphroditus oblongus , acutus, basi articula- 

 tus , dorso convexus , ventre planiusculus , longitudine florem neutrum subaequans. Paleae char- 

 taceae, striatulae, fuscae, glabrae, subnitidulae; inferior elliptica, acuta, marginibus hyalino- 

 membranaceis superiorem amplectens ; superior vix brevior , genitaUa involvens , dorso planius- 

 cula. Squamse duae, externae, coUaterales, dolabriformes, hyaUno-membranaceae, planae, glabrae, 

 integrse, apice retusse. Stamlna tria, hypogyna, unum anterius, duo lateraUa, subaequaha. 

 Fllamenta capillacea , glabra. Anthera^ oblongo-Uneares , utrlnque bifid^, biloculares , glabrae, 

 fuscae, secundum longitudinem dehiscentes, lobis obtusis. PoUen : granula minutissima, subro- 

 tunda, hyaUna. Ovariumsessile, oblongum, superne attenuatum, glabrum. StyU duo, capiUa- 

 cei, elongati, glabri. Stigmata pemcilUformi-plumosa , fusco-caerulea , exserta; piUs simpUcibus , 

 elongatis , hyaUnls , cellulosis. Fructus haud suppelunt. 



