122 CONTRIBUTIONS FEOM THE NATIONAL HERBARIUM. 



Cynosurus virgatus L. Syst. Nat. ed. 10. 2: 876. 1759. 



The type specimen, from "Br," is Leptochloa virgata (L.) Beauv. After his own 

 description Linnaeus cites Sloane's plate 70, figure 2, but does not use his diagnosis, 

 hence Sloane's plant, which is also Leptochloa virgata, is not the type. Linnaeus cites 

 the same plate of Sloane under Panicum sanguinale. a 



Bromus purgans L. Sp. PL 76. 1753. 



One sheet is marked "3 purgans H U." The specimen has rather sparsely retrorse- 

 pubescent, overlapping sheaths and evenly pubescent spikelets. This is B. latiglumis 

 (Scribn.) Hitched (Bromus altissimus Pursh, not Gilib.). A second sheet is marked 

 "K 4." In this specimen the sheaths are not overlapping, but the spikelets are 

 pubescent all over like the first. This is B. purgans as ordinarily understood and as 

 described in Shear's Monograph of Bromus. c A third sheet is marked "H U 4" and 

 is like the first sheet. It will be observed that there is considerable confusion here. 

 Bromus no. 3, as described in the Species Plantarum, is called purgans, and no. 4 is 

 called ciliatus. Both are said to come from Canada, collected by Kalm, the latter 

 (ciliatus) being from seed. Bui none of the specimens is B. ciliatus as we understand 

 the species <* nor corresponds to the description given by Linnaeus, which is unusually 

 ample. In his description he stales "potatorum marginibus (nondorso) valde pilosis," 

 while in the specimens the lemmas are pubescenl all over, as described for B. purgans. 

 We must conclude that there is no type of B. ciliatus in'the herbarium and that the 

 specimens marked "4" are not types of this species. Wecanthus retain the name for 

 the species as described in our manuals and in Shear's Monograph. As to B. purgans, 

 Linnseus's description does not distinguish between the three specimens; that is, be- 

 tween B. purgans and B. latiglumis. Of these three specimens, two are marked "H 

 1*," indicating thai they were cultivated in the garden at Upsala. The third speci- 

 men, marked " K 4, " is the only one collected by Kalm. This plant, which is Bromus 

 purgans as commonly understood and as described in Shear's Monograph of Bromus, c 

 should be taken as the type, in spite of the "4" placed upon the sheet by Linnaeus, 

 probably inadvertently. In the Stockholm herbarium are two specimens marked B. 

 purgans. e The second specimen, marked by Solander, is B. latiglumis (Scribn.) 

 Hitchc. The other, marked by Linnaeus "HU4" and "e semine Canadensi," seems 

 to be the same, though it is only a panicle. 



Bromus ciliatus L. Sp. PI. 76. 1753. 



There is no type specimen of this species. The specimens marked "4," that is, B. 

 ciliatus, which is the fourth species of Bromus, do not agree with Linnaeus 's descrip- 

 tion. The original Linnaean description applies to Bromus ciliatus as currently under- 

 stood and as described in Shear's Monograph of Bromus./ For a further discussion of 

 this species see notes above under B. purgans. 



Stipa avenacea L. Sp. PL 78. 1753. 



The type specimen is from Gronovius, as it bears his diagnosis, "Hordeum spica 

 tenuiori," etc. It is also marked by Linnaeus "3 capillata," but does not bear the 

 name avenacea. Apparently Linnaeus intended first to name the species capillata, 

 but subsequently adopted the name avenacea. This specimen and that of the Grono- 

 vian herbarium (Clayton no. 621) are Stipa avenacea as generally understood. 



a Sp. PL 57. 1753; ed. 2. 85. 1762. 

 ftRhodora 8: 211. 1906. 



c U. S. Dept. Agr. Div. Agrost. Bull. 23: 39. 1900. 

 d Shear's Monograph (loc. cit. 31). 



e Cf. Lindman, Arkiv. Bot. 7: 43. 1907. 



/ U. S. Dept. Agr. Div. Agrost. Bull. 23: 31. 1900. 



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