348 TLANT T.ll'K ( H ' ALAHAMA. 



rowly linour loug, acuiiiiiiiitD li'ii\ rs. tin- <oiiir:irt<il sliort-stjilked jiuiiicU!, iiinl ol)tn«c! 

 sjiikelots. riTonnial. 



\:i8i'y, ('t)iitr. Nat. HtMh. 3 : ;!l. ('(mltcr, Coiitr. Nal. I lirl.. 2 : ."•(»"). 



("I l!A. 



< 'aroliiiiaii aiitl Loiiisiaiiiaii areas. Cuast. uf Noiitliiirii X'ir^iiiia lo I'ltniila, MIssIn 

 ."^iplii, and eastern Toxas. 



.\i,AH.\M.\ : Lower I'iiio r»>;^i(>n. Metaniorpliic liiils. Dry Haudy Hoil. Mobile 

 C'ouuty. Lee County, Anlinru (F.N. F.arU). May, .Inne. Not infrcMineiit. 



Ty])e locality: "('nl>a orientalis ( \\ ri^^lit :{|."i.!t; o<ci<!i'ntalin, in savanis |ir<)|»e 

 Ilanabana (Wright ad l.S(;r>)." 



llerli. (icol. •Surv. Ilerh. Molir. 



Pauicum angustifoliuni Ell. Sk. 1: 1L'!I. 1N17. 



I'diiiciini coiisdnfiniiuinii Wats, in (Jray, Man. i'<l. (!,()33. 1S89. In ])art. Not Kiintli. 



/'. tHKnttillnim rdinonum (iriseh. Cat. 1*1. Cnl). -'.V2. 18(>tj. 



Kll.Sk.l.c. Gray, Man. ed. G, *)33. Chap. Fl. ed. 3, 58.^. Coulter, Contr. Nat. Merit. 

 2 : .^10. Scribuer, (Jrass. Tenu. 2 : 48, 1. 1.2, f. 47, -18. 



Wkst Indiks. 



Carolinian and Louisianian areas. Southern Virginia to southeast Tennessee and 

 Florida, west to Texas. 



Alaiiam.v: Coast Pine belt. Dry open ])ino forests. Metaniorjihic hill.s. Leo 

 County, Auburn (/■'. iS. Eurle). Washington County, Vellowpine. .Mobile County, 

 Citrouelle. April to May. Common, i'ereniiial. 



Type locality : "Shaded dry soils [South Carolina, Georgia]." 



Robust forms of a dense habit of growth, the crowded leaves narrower and erect, 

 .ap])roaching stout forms oi I'anicnm ttenrantlium, with which this sitecies has been 

 confounded. 



Herb. Geol. Surv. Herb. Mohr. 



Panicuni xauthospermum Seribntu- & Mohr, sp. uov. 



A low, erect, cespitosc^, hairy perennial, 5 to 9 inches high, more or less branched 

 from the base, with erect leaves and rather loosely llowered ovate or pyramidal jtan- 

 icles 1 to 2 inches long. Culms, leaves, and sheaths clothed with a soft pubescence 

 of rather long lax hairs; nodes bearded with erect-spreading white hairs; sheaths 

 shorter than the internotles, densely pilose; leaves lanceolate-acuminate, rounded at 

 the base, gradually tapering to the apex, densely ])ilos(; beneath, more thinly so 

 above, the margins narrowly cartilaginous, often somewhat involute toward the 

 apex, those of the stem about 3. lA to 3 inches Ion-;', 2 to 3 lines wide, the basal ones 

 somewhat shorter. Panicles slightly exsertcd, lax, jtale; rachis smooth or somewhat 

 pilose below; lower branches ^ to 1 inch long, flexuous, gradually shorter above. 

 Spikelets about 1 line long, elliptical, obtuse, pale yellow or straw colored, con- 

 tracted at the base, for the most ]iart long-pedicellate; tirst glume about one-fonith 

 as long asthespikelet, acute; second and third glumes eipia ling the tlowering glume, 

 about !>-nerve(l, rather thinly pilose-pubescent with soft, spreading hairs; tlowering 

 glume about It of 'i liii<" Itu'S, elliptical, acute, very smooth. 



Near 7*. arenlcohi, from which it differs by its large yellowish spikelets. 



Type si)ecimen collected by Dr. Charles Mohr in open sandv soil, Greenville, Hutler 

 County, Ala., May 8, 189«. 



Panicuni cahoonianum Ashe, Journ. Elisha Mitch. Soc. 15 : 113. 1898. 



ranicum i/eor<jianum Ashe, .lourn. Elisha Mitch. Soc. 15 : 30. 1898. Not P. <jeor<i'unm 

 Spreng. 



Alow, densely tufted, much-bran( hcd, perennial, glabrous or soft-pubescent; culms 

 4 to 8 inches high; leaves i-rect or ast^ending. oblong-lanceoiate, 1 to 2 inches and 

 over long, about 2 lines wide, taper-pointed, soft-i)ubescont or glabrate; ]»anicle 

 short-peduncled, its branches erei:t-spreading; spikelets \{ lines long, Itroadly 

 elliptical, softly ])ubescent. 



Louisianian area. Ueorgia and Florida. 



Alabama: Coast plain. Dry sandy woods. May, 1882. 



Type locality : " Dry sandy soil, southern Georgia and Florida." {Small, Chapmau.) 



Panicuni arenicola Ashe, .lourn. Elisha Mitch. Soc. 15 : .^6. 1898. 



A tufted ])erennial with erect culms geniculate at the base, 10 to 24 inches high, 

 pubescent at least below; leases more or less erect, 2 to 3 inches long and 1.1 to 2 

 lines wide, much smaller above, taper-pointed, sheaths pubescent, jianicle long- 

 exserted, spreading, 2 to 3 inches long with spreading branches; spikelets obovate, 

 obtuse, little less than 1 line long. 



Carolinian and Louisianian area. Eastern North Carolina, western Florida. 



Alabama: Lower division of Coast Pine belt. In open sandy pine woods. Mobile 

 County, Springhill, abundant. May, 1899. 



Type locality: "Chapel Hill, N. C." ( W. W. Ashe, .June, 1898), and eastern part t)f 

 State. 



