348 



Sporobolus curtissii Small 124 



cryptandrus A. Gray.. 456 

 ilomiugensis Kunth. .- 457 



floridanus Chapm 123 



tloridanus curtissii 



Vasey 124 



heterolepis A. Gray... 121 



indicusPv. Br 126 



iuterruptus Vasey 122 



joiiesii Tasey 460 



junceus Kunth 455 



ligulatus Vasey and 



Dewey 461 



longifulius Wood 120 



nealleyi Vasey 462 



serotinus A. Gray 454 



simplex Scribn 468 



texauns Vasey 463 



thuiberi Sci'ibu 465 



utilisTorr 467 



vagina?floru8 Wood . . . 466 



virgiuicus Kunth 470 



wrightii Scribu 458 



Stapfia cohisana Davy 517 



Stenochloa californica Nutt 239 



Stenotaphrum a m erica n u m 



Schrank 72 



s e c u n d a t u m 



Kuntze 72 



Sti-pa avenarea Linn 423 



avenaceoides Nash 424 



barbata Michx 423 



bloomeri Boland 433 



capillaris Lam 448 



comata Tiin. & Kupr 425 



coronata Thurber 434 



hassei Vasey 427 



jiincea Mx 442 



kingii Boland 90 



macouni Scribn 431 



melanocarpa iluhl 323 



incmhranacea Pursh 97 



mongolica Triu 91 



neo-mexicaua Scribn 428 



occidcntalis Thurb 436 



oregoncnsis Scribn 426 



parishii Vasey 439 



pennata \a.r. neornexicaiia 



Vasey 428 



pringlei Scribn 429 



Stipa richardsoni Link 4:i5 



richardscnii A. Gray 431 



robusta Kntt 437 



scrlbneri Vasey 438 



sibirica Thurb 433 



spartea Trin 89 



speciosa Trin. & Eupr 440 



stricta Vasey 426 



tenuissima Trin 432 



vaseyi Scribn 437 



viridula Trin 430 



vindida var. robuata Vasey . 437 



Streptachne ftoridana C'liapm 422 



Syn therisma lineans Ka sh 37 



prcecox Walt 339 



se/-o<i?ia Walt 38 



Thurberia arkansana Benth 133 



Trachynotia iwlystachya Michx . . . 172 



Tragus occidentalis Xecs 324 



Trichachne tenuis Kees 343 



Trichloris blanchardiana Scribn . . 189 



fasdculala Fourn 189 



pluriflora Fourn 190 



Tricuspis monstrosa Munro 225 



inuticaToTv 505 



purpurea A. Gray 509 



Triodia acuminata Vasey 235 



albescens ^'asey 233 



anibigua Vasey 232 



decum benn Beauv 508 



eragrostoides Vasey <fe 



Scribn 230 



mutica Scribn 505 



nealleyi Vasey 234 



pukhella HBK 230 



stricta Vasey 507 



texana S. Wats 231 



trinervighirais Vasey 506 



Triijlaais americaua Beauv 237 



purpurea (Chapm.) 509 



Tripsacum cylindricum Michx 307 



rtactyloides L 1 



Trisetum argenteum Scribn 498 



canescens Buckl 1G3 



cernuum Trin 164 



elongatum 162 



iuterruptum Buckl 162 



niontanum Vasej' 161 



muticum Scribn 490 



palustre Torr 159 



