52 PANICACE.B. 



A very variable species, with many varieties and forms, appar- 

 ently runninj; into J. macron nt.s Michx. with all its forms. Flor- 

 ida, Cliapmati ; Louisiana, Lanyhis j Pennsylvania, Garber 

 319. 



Sandy land, Massachusetts to Florida and Texas. 



Var. glaucus Hack. I), C. Mono<r. Phan. 0: 411 (1889). Florida, 

 Cnrtiss 3038b. A slender, glaucous plant. 



Var. tetrastachyus (Kll.) Hack. Monog. Phan. 0:-lll. A. 

 k'fnisfar//i/i(s Ell. Bot. S. C;. and (Ja. 150 (1817). Slender, spikes 

 usually in clusters of 4. 



Florida, J. //. Ciirfiss '^Ct'Mi; Alabama, Moltr. 



17. A. macrourus Michx. Fl. lior. Am. 1 : 5(5 (1803). 



Culms usually erect, stout. Branches numerous, in typical 

 plants, mostly near the top of tlio culm. Pedicels often 5 mm. 

 long. After studying many ])lants. tlie above are all the essen- 

 tial differences that I can discover which hold good between this 

 plant and J. I'l'iyi/iici/s L. V. S. Dcpt. Agric. 101 ; Florida, 

 CV^r/Zw for Scribncr oC):}'.): 'i'exas, ^Vw//^// for Nat. Mus. 



Xcw York to Florida and west to Southern California. 



\'ar. abbreviatus Hack. I). C. Monog. Phan. (> : 408 (1880). 

 Uatlier low. culms narrow ; ]ianicle dense, obovate-oblong. 10-15 

 cm. long; rays short, springing from 3-4 nodes ; secondaries 

 solitary. Spathes about eqiudling the racemes. 



New Jersey (A. (Jniy). Plant seen by me now in Herb. Gray. 



Var. corymbosus Chapm. The branches borne in one or more 

 spreading corymbose panicles. Florida, CiirftM 3(')30c. 



Var. glaucopsis Ell. Hot. S. C. and (Ja. 1 : 150 (181G). 

 Plant rather sleiuler, glaucous, the numerous branches ])aniculate 

 for 30-40 cm. or more at the top. This includes var. riridis 

 Chapm. 



Florida, Ciiiiiss 3<)30b. d. 



Var. hirsutior Hack. I). C. Monog. Phan. : 400 (1880). 

 Sheaths green, villous with tuberculate hairs; l)lades smooth, very 

 scabrous. Panicles ample, with many branches 20-50 cm. long. 

 Spathes scabrid. 



Florida. Cnrtiss 3030, now in Herb. Grav. 



