494 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Andropogon spathiflorus (Nees) Kunth, Enum. PI. 1: 496 

 (1833). — Low pine ridge near Manatee Lagoon, June 21, 1905, M. E. 

 Peck, no. 54. 



Andropogon virginicus L. Sp. PI. 2: 1046 (1753). — Pine ridge 

 near Manatee Lagoon, September 27, 1905, M. E. Peck, no. 150. 



Arundinella Deppeana Nees ex Steud. Syn. PI. Gram. 115 (1854). 



— Thicket near Manatee Lagoon, February 28, 1906, M. E. Peck, 

 no. 359; river bank, Moho R., March 16, 1907, M. E. Peck, no. 735. 

 This species may not be distinct from .1. peruviana (Presl) Steud. 1. c. 

 as affirmed by Nash in No. Am. Fl. 17: 143 (1912), but from the 

 material in the Gray Herbarium it seems to be distinct. 



Leptocoryphium lanatum (HBK.) Nees, Agrost. Bras. 84 (1829). 



— Pine ridge near Manatee Lagoon, x\ugust 30, 1905, M. E. Peck, 

 no. 137. 



DiGiTARiA setigera Roth ex R. & S. Syst. Veg. 2: 474 (1817). I). 

 setosa Desv. ex Hamilt. Prodr. PI. Ind. Occ. 6 (1825). Si/nthcrisma 

 digiiatum (Sw.) Hitchc. Contr. U. S. Nat. Herb. 12: 142 (1908) 

 based on Milium difiifafuni Sw. Prodr. Veg. Ind. Occ. 24 (1788) not 

 D. digitata Buese in Miq. PI. Jungh. 381 (1855). — Cultivated ground 

 near Manatee Lagoon, June 18, 1905, M. E. Peck, no. 44. 



Thrasya campylostachya (Hack.) Chase in Proc. Biol. Soc. Wash. 

 24: 115 (1911). Panicum campylostachyum Hack, in Oesterr. Bot. 

 Zeitschr. 51: 367 (1901). — Pine ridge near Manatee Lagoon, June 18, 

 1905, M. E. Peck, no. 70. This interesting species originally' described 

 from Costa Rica seems to be limited in its distribution to the southern 

 portion of Central America. The determination was kindly verified 

 by Mrs. Chase, Assistant Agrostologist of the Bureau of Plant Industry. 



Mesosetum filifolium, sp. nov. Culmi caespitosi, basin versus a 

 vaginis inultis arete imbricatis obtecti, erecti, tenues, 35-70 cm. alti- 

 tudine, inflorescentiam versus puberuli aliter nodis breviter hispido- 

 barl)atis exceptis glabri. Vaginae radicales squamiformes, tumidius- 

 culae, hispidae, abrupte ad folii junctionem contractae baljulataeque; 

 eae culmarum elongatae sed internodio breviores, glabrae, in laminas 

 gradatim transeuntes. Ligula barbulata, circa 0.5 mm. longa. Folia 

 erecta, setaceo-filiformis, basin versus conduplicata, 7-28 em. longa, 

 0.5 mm. lata, glal)ra, ea culmariun reducta, supremum saepe vix 1 cm. 

 longum. Inflorescentia erecta, 4-7 cm. longa, 5 nun. diametro; axis 

 flexuosus fere capillaris, excavationi non ostendentius, puberulus 

 vel scaber; pedicellum breve, hispidum. Spiculae patenti-erectae, 

 lineari-ol)longae, apicem versus tenebrae, albido-villosae, 5 mm. longae, 

 1.5 mm. latae; gluma prima cj^uam secunda brevior vel eam subaequans, 



