196 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



on the margin, usually hispidulous on the collar; ligulea ciliate membrane, 1 to 3 mm. 

 long; blades flat, very scabrous on the upper surl'aoe, smooth or scaberulous beneath, 

 narrowed at the base, as much as 50 cm. long and 2 cm. wide; panicles rather loose, 

 tapering above, as much as 25 cm. long, the secondary panicles often much smaller 

 and more compact, the branches ascending, as much as 2 cm. long, about equally 

 distributed, the panicle thus not being interrupted or lobed, the axis scabrous- 

 pubescent and also loosely or sparsely villous with hairs 1 to 2 mm. long, the hairs 

 rarely wanting; bristles single below each spikelet but often seemingly in pa i i 

 of the abortion of spikelets, straight or obscurely flexuous, antrorsely scabrous, 1.5 

 to 3 cm. long, greenish or yellowish; spikelets about 3 mm. Ion?, lanceolate-ovate, 

 not strongly turgid on the convex side, pale or greenish; first irlume about one-third 

 the length of the spikelet, 3-nerved; second glume two-thirds to three-fourths as 

 Jong as the fertile'lemma, mostly 5-nerved, sometimes 6 or 7-nerved; sterile lemma 



as long as the fertile, :,- 

 nerved, concave or sulcate, 

 the palea narrow, about half 

 as Ion? as its lemma ; fertile 

 lemma pale, acute or some- 

 what pointed, finely and 

 not very distinctly cross- 

 wrinkled, the surface ap- 

 pearing cellular. 



The wider-leaved speci- 

 mens of this species resem- 

 ble Chaetochloa vulpiseta, 

 but differ from that species 

 in the larger spikelets. 

 The latter character and 

 the scabrous blades dis- 

 tinguish it from C. scheelei 

 of Texas. From C. villo- 

 sissima of Texas, with 

 equally large spikelets, it 

 is distinguished by the 

 scabrous instead of villous 

 blades. 



DISTRIBUTION. 



Open ground, mostly on 



coral rock or coral sand, 

 Fig. 54. — Chaetochloa maerosperma. From Curtiss 3G17, Florida. „ . , , ,, -,-, , 



Florida and the Bahamas. 



Florida: Homosassa, Combs 977. Orange, Baker in 1899. Apalachicola, Chapman 

 in 1896. Mouth of St. Johns River, Curtiss 3617. Grasmere, Combs 1150. 

 Brevard County, Fredholm 5559. Sneeds Island, Tracy 6462. Captiva, Orrok in 

 1915. Caloosa River, Garber 41 in 1878. Eustis, Chase 4123. Miami. Tracy 9053; 

 Chase 3848; Eaton 337; Hitchcock in 1903. East Pass, Tracy 6159. Crystal, Combs 

 979£. Fort Myers, Hitchcock 518. Snapper Creek, Small d Nash 103. Ragged 

 Keys, Small & Carter 2879. Howes Key, Simpson 263. Key Largo, Curtiss 

 5502. Key West, Blodgett. 



Bahamas: Frozen Cav, Berrv Islands, Britton & Millspaugh 2203 (N. Y. Bot. Gard. 

 Herb.). 



