32! 



uuuc foriuas 1. monocephala: spicis in capUuIutu iiuuiu con- 

 gestis (in arenosis pr. Mariepaston, Majo, n. 1481); 2. stm- 

 plejc spieis capitatiin cougcstis in anthela simplici dispositis 

 (iu arenosis pr. Mariepaston, Majo; u. 1107; in arenosis pr. 

 Joden -Savauua, Novbr. n. 1107); 3. composita, elatior bi- 

 pedalis spicis capitatitu congestis in anthela composita. — In 

 Omnibus his formis video achaenium primum lutescens dein 

 fuscesceus v. cinerascens trigono-obvoideum minutissime puncti- 

 formi-tuberculatuiu, aiigulis aculiusculis prominiilis, apice ob- 

 tnsissimum subimpressuni i't niiicrouulo parvo obtuso obscu- 

 riore coroualnm. 



/. capillaris Kth. Gu. 1. I. p. *211. Diias habeo fornias 

 hujus polymorphae per calidiores terrae partes divulgatac plan- 

 lae e Suriname: 1. tenuifoliam Rudge jam e plantis Wei- 

 geltianis uotam, gracililale ouinium partium et parvitate 

 spicarum insignem, 4 — 8 poll. altam (iu arenosis pr. Marie- 

 paston, Majo, n. 1317j; 2. eodem modo tenuifoliam sed iu- 

 tioresceutia in caule breviore paullo magis coutracta spicisque 

 duplo majoribus differentem, 2 — 4-poIlicarem (in arenosis ad 

 Joden -Savanna, Novbr., u. 1106). Achaenium simile illi prae- 

 cedentis specie iu primis in statu immaturo, sed apiue uon 

 ita oblusum lougius videtur et augustius. 



Fimhristylis Vahl. 

 Specierum uimis magnnm nunierum hocce geuus continet 

 apnd auctores. Contraho cxempli gratia cum cel. Berto- 

 lonio (Fl. Ital. 1. p. 310 seqq.) oiiines sub uoiaiuibus Scirpi 

 V. Fivibristylis dichotomae et annuae per orbem terrarum va- 

 ganles formas, quae omnes eundem habent fructum, eundem 

 Crescendi modum, sed differuul evolutione authelae, spicarum 

 maguiludine, squamarum mucrone vario, pilositate majore v. 

 deficieute sed uuilo alio charactere. Si quoque diagnoses fu- 



3I1 Bd. Ss Hefl. ^\ 



