ADDITIONS AND CORRECTIONS 



Page 

 18 In third line of S. scopulorum, after "leaves opposite" add "or 3- 

 ranked." 



30 The following modification in the key of Tribe 6, 6th and 7th lines 



should be made: 



Awn decidedly twisted and bent, persistent. 18. Stipa. 



Awn not twisted, or if decidedly so, deciduous. 



30, 



36 For 9. Vallota read 9. VALOTA. 



37 After P. capillare insert: 



2a. Panicum dichotomiflorum Michx. Annual, stem branching, 

 compressed, 3-18 dm. high, glabrous, spreading or ascending; leaves 

 2-4 dm. long, 8-15 mm. wide, scabrous above; panicle 1.2-4 dm. long, 

 diffuse; spikelets short-peduncled, secund, 3 mm. long, acute; first glume 

 obtuse; second glume and sterile lemma pointed beyond the fruit. P. 

 proliferum Am. auth., not Lam. Waste ground: Mo. — Neb. — N. M. — Fla.; 

 Calif. — Panama; W. Ind; Salt Lake City, Utah. Jl — O. 



39 After C. viridis insert: 



2a. Chaetochloa verticillata (L.) Scribner. Erect annual, stem 

 smooth, scabrous only below the panicle, 5-10 dm. high; sheaths glabrous 

 or rarely ciliate at the summit; ligule very short, ciliate; blades flat, 

 scabrous on both sides or more or less pilose, 1-2 dm. long, 5-10 mm. 

 wide; panicle stiff, cylindric, 5-15 cm. long, interrupted at the base; 

 bristles downwardly barbed, 3-6 mm. long; spikelets 2-2.5 mm. long; 

 first glume one third as long as the second; lemma finely cross-wrinkled. 

 Cultivated or waste places: Mass. — S. D. — Utah. — Calif. ^Ala.; nat. from 

 Africa and southern Asia. 



39 For C. composita substitute Chaetochloa macrostachya (H. B. K.) 

 Scribn. & Merr. and insert the former as a synonym.* 



39 For C. carolinianus Walt, substitute Cenchrus pauciflorum Benth. 



42 The authority of Stipa neomexicana should be (Thurb.) Scribn. 



44 In description of *S. Nelsonii, instead of "panicle 1.5-3 cm. long" 

 read "1.5-3 dm. long." 



46 Under E. hymenoides add as synonyms Oryzopsis cuspidata Vasey 

 and 0. hymenoides Ricker. 



50 After A. pallescens insert: 



2a. Alopecurus geniculatus L. A tufted glabrous perennial; stem 

 glabrous, 1—4 dm. high, usually decumbent at the base; sheaths loose; 

 leaf-blades 4-7 cm. long, 1-4 mm. wide, scabrous above; spikes 3-7 cm. 

 long, 4-7 mm. thick; glumes slightly united at the base, 2.5-3 mm. long, 

 glabrous, except the lateral veins, obtuse oracutish; lemma shorter, obtuse, 

 smooth; awn inserted about one fourth above the base of the glume, 2mm. 

 longer than the spikelet. Wet places: Newf. — Fla. — Tex. — Calif.; nat. 

 or adv. from Eurasia. Jl — S. 



51 For S. stridus (Scribn.) Merr., not Franch., substitute Sporobolus 

 contractus Hitchc. 



58 For DeschQtnpsia Beauv. substitute Aira L., according to several re- 

 cent authors. 



* In nearly all the cases when a substitution is made, the name in the body of the book 

 is to be understood as a synonym, unless otherwise stated. 



(1111) 



