Botamqae. A R I S T I D A. 101 



Curlopogon dichotomus PB. Agrost. (1812) p. 32. tab. 8. fig. 7. RS. 

 Syst. 2. p. 398. 



Avena paradoxa Willd. herb! n. 2211 ex Kunth 1830. 

 Canada (Prescott!); In siccis arenosis a Nova Anglia usque ad Caro- 

 linam vulgaris (Pursh); in glareosis et ad vias Pennsylvaniae (Miihlbg.); 

 prope N. Eboracum (Torreyl) et Bethlehem (]\Ioscr!); Carolina borealis 

 pr. Lincolm (Michx. ) ct australis in provinciis superioribus (EUiott); 

 Georgia ad margines sylvarum (Beyrich! — culmo supcrne ramosiore, 

 inflorescentia uberiore, panicula subpyramidata) ; Arkansas (Beyrich!). 

 Fl. Majo — Juhum (Pursh). Scptemb. (Moser, Muhlbg., Torrey.) 



Radix annua (Torrey), bienns (Pursh), perennis (Elliott). Culmi 8 

 — 12 pollicares, ramosi. Folia 2 — k poll. vix linea latiora. (Elliott.) 

 2. Aristida gracilis Elliott cx Nuttall gen. 1. (1818) p. 57. Elliott Carol. 

 (1821) p. 142. tab. 8. fig. 3. Trin. Act. Petrop. 1829 p. 86. et 

 probabiliter A. longespica^ta) Poir. Encycl. meth. suppl. 1. (1810) 

 p. 452. Paniculae linearis, racemosae, basi interruptae, 4 — 6 

 poll/caris radiis binis, uni-1. paucifloris, adpressis; gluma inferiore 

 2| lineali, gluma superiore et flosculo dorso scabro parum bre- 

 viore; setis lateralibus erectis 3 — k (rarius 2) lincalibus; media 

 divaricata 1. rcflcxa, inarticulata, non torta, lateralibus duplo 

 longiore. 

 Trixostis Rafin. ex Steud. Nomencl. 1841. 

 Curtopogon gracilis NE! in hb. Martii. 



Pineta sterilia N. Caesareae (Gray Gram. exs. n. 91); Delaware (Bern- 

 hardi!); Carolina (Bosc. ex Poir.), vulgaris circa Chai-lestown (Elliott); St. 

 Louis (Drummond!). Sept. Octob, 



Semipedalis — pedalis, basi ramosa. Panicida strictiuscula, contrac- 

 to-angustissima. «Flosculi in speciminibus visis singulari modo maculi* 

 lucide et obscure griscis fasciati sunt, quod nisi variabile putassem, 



