OF ARTS AND SCIENCES. 47 



longis ; floribus mox pendulo-reflexis ; calyce basi vix gibhoso, dcn- 

 tibus setaceo-subulatis tubo parum brevioribus ; corolla ocbroleuca ; 

 leguminibus pendulis canescentibus pollicaribus ohlongo-lanceolatis 

 utrinque acutatis bilocellatis stipite vix duplo longioribus, sectione 

 transversa cuneato-obcordata. — "Wasco County, S. E. Oregon, Jo- 

 sepb Howell. 



ELEPii.wTorus ncdatus. Hirsutulo-pubescens, viridia ; foliis 

 plerisque radicalibua humifusis oblongis spathulato-obovatis oblanceola- 

 tisque, venis parum prominulis ; caule scapiformi subaphyllo; glome- 

 rulis parvulis ; setis pappi basi brevissime abrupte deltoideo-dilatatis. 

 — E. scaber, Torr. & Gray, Fl. ii. Gl, non Linn. Echinopliorce 

 affinis Mariana, Scabiosoe pratensis folio integro, capitulo splendente 

 laevi. suramo caule coronata, Pink. Mant. 66, t. 388, fig. 6? — This 

 we have from " Oxford, Delaware, and thence common southward," 

 Canby; near Snow Hill, Maryland, Bebb, collected by both botanists 

 in September, 1863. From the habitat and from the rude figure we 

 may refer to this the plant of Plukenet above cited, which Gronovius 

 in the second edition of the Flora Virginica referred to Clayton's 

 E. foliis obverse lanceolato-oblongis rigidis, &c, and confused with E. 

 scaber. We have a doubtful (because immature) specimen from South 

 Carolina ; and the specimens of Hale from Louisiana, referred to 

 E. scaber in Torr. & Gray, Flora, above cited, are clearly of this spe- 

 cies. In habit this resembles E. tomenfosus, but it has none of the 

 canescently silky minute pubescence which distinguishes the foliage 

 of that species ; the glomerules are smaller, and the scale-shaped base 

 of the setas of the pappus is remarkably short, small, and broad. 

 The only species resembling it in this respect is the Tropical American 

 E. mollis, HBK. The latter has the soft pubescence of E. tornen- 

 tosus and the leafy stem of E. Carolinianus . Thus we recognize three 

 fairly distinct species in the United States, all peculiar to the country. 

 E. mollis is the tropical American species, and E. scaber the species 

 of the Old World tropics, but naturalized in the West Indies, &c. 

 In the twentieth volume of the Linnasa, Schultz (Bipontinus) united 

 all these allied American species, but was disposed to keep the Old 

 World E. scaber separate. Grisebach, in the Flora of the British 

 West Indies, distinguished E. scaber, E. mollis, and E. Carolinianus 

 as so many species. But Baker, in the Flora Brasiliensis, takes 

 E. mollis to be identical with E. tomentosus and no more than a mere 

 variety of E. scaber. In our view all five species may be critically 

 distinguished. 



