44 



Low cultivated ground, Duval County, Fla. (No. 3602, A. H. Curtiss), and moist, 

 recently cultivated ffronnd in Jacksonville, Fla. (No, aoHS, A. H. Curtiss.) 



This grass was collected many years ago by Mr. Baldwin, and specimens of it in the 

 Herbarium of the Philadelphia Academy of Natural Sciences are ticketed I'ani- 

 cum haldtcinii, Nutt., whicli name is here taken up. 



PANICUM WRIGHTIANUM 8rribn., sj.. n. (Fig. 4.) 



A slender, mncli branched, leafy perennial with smooth, delicate panicles and minute 

 spikelets. Culms many-jointed, branched tliroughont, minutely i>ubescent. 

 Sheaths shorter than tlie internodes, excepting on the more crowded branches, 



minutely pubescent in the type. 

 J^asal leaves crowded, ovate to 

 o'»ate-lanceo]ate, 1 to 2 cm. 

 long, very minutely pubescent 

 beneath, sparingly so above. 

 Cauline leaves 1 to 3 cm. long, 

 2 to 3 mm. wide, very acute, 

 tapering Irom near tbe base, 

 minutely pubescent below, 

 faintly and shortly pilose above 

 intliotype. r'auicle 2 to3cm. 

 long, binuches capillary, flex- 

 uons, the main axis minutely 

 pubescent below, branches glab- 

 rous. Spikeletsovat(Noblong to 

 orbicnlate, hardly 1 mm. long. 

 First glume about one-third as 

 long as th(^ spikelet or shorter; 

 second and third glumes mi- 

 nutely and denselj- pubescent, 

 faintly r-i- to 7-nerved, obtuse, 

 barely eciualing the smooth and 

 shining dowering glume and 

 palea. Third glume with a 

 minute palea in its axil. 

 Cuba (No. 3463, C. Wright, 1865); 

 in moist, open areas in pine 

 forests uetir Biloxi, Miss. (No. 

 307, Thomas H. Kearney, Octo- 

 ber, 1896) ; Horn Island, lUloxi, 

 Miss. (No. 2861, S. M. Tracy, 

 August 20, 1S94). 

 This species is closely relati'd to 

 Punicinii Ixildiriiiii. but is more 

 branching throughout. In that 

 species the br;inch(!S are mostly 

 near the base; the culm is minutely pubescent, in /'. h(tUlwiiiii it is glabrous. 

 It is further distinguished by the imliescenic of its leaves and spikelets. 

 CHiETOCHLOA LATIFOLIA Scril.n., ,sp. u. (PI. III.) 



A branching annual, 2 to 4 dm. high, witli compressed sheaths, rather broad, flat 

 leaves and liristly panicles 4 to.S cm long. Culms compn^sscd, slightly scabrous, 

 and short bearded at the iiodes. Sheaths striate, scabrous, especially along the 

 keel, papillate-pilo.se, villous on the overlapping margin. Ligule very short and 

 densely ciliate-fringed with stiff hairs. T.eaf-bbides broadly lancc(date, cordate 

 at 1be liase, very acute ."> to 6 cm. bmn, 1 to L' cm. broad, scabrous on both sides 



Fig. 3. — JUmicKin I al.iirinii Null, in Huiii. Aiad. N;il:. 

 Sii. Pliil.T. : (I, b, c, tlii('e viewsol'llic Npikolct; d, llDwcriug, 

 or friiitinii, glnmi! aoen from tiie back; e, .■interior viow 

 of the fruiting glunio, showing palea. 



