V. PLANTS WRIGHTIAN^. 95 



•j- S. Radula, Nutt. Tar. rotundifolia. S. rotundifolia, DC.! Prodi: 5. p. 339. 

 S. scaberrima, Torr. &;■ Gray, Fl. 2. p. 221. Near Austin, Texas. (Near New Braun- 

 fels, Lindheimer, 1850.) — By numerous intermediate states this is plainly connected 

 with S. Radula. Probably what I referred to S. decemflora, in PL Lindh. 2. p. 222, 

 likewise belongs here. 



283. LiNOSYRis HETEROPHTLLA (sp. nov.) : sufFruticosa, glabra ; caulibus simplici- 

 bus vel apice fastigiato-corymbosis ; foliis anguste linearibus mucronatis uninerviis, 

 superioribus integerrimis, inferioribus parce laciniato-dentatis ; capitulis plurimis 

 confertim fasciculato-corymbosis 12-floris ; involucro subcylindraceo floribus dimidio 

 breviore, squamis glabellis ecarinatis lineari-oblongis obtusis apice ciliolatis. — 

 Valley of the Pecos ; Aug. — Stems a foot high, very leafy, as well as the slender 

 and somewhat angled branches. Leaves thickish, punctate, tapering to the base ; 

 the lower, two or three inches long and one or two lines wide, usually beset with 

 one or two sharp and salient teeth or lobes on each side ; the upper, an inch long 

 and half a line wide, obscurely one-nerved. Heads more or less peduncled, crowded, 

 four lines long. Involucre cylindraceous-campanulate ; the scales about 15, slightly 

 glutinous-glandular, as are the flowering branches and peduncles, rather concave, ap- 

 pressed, with a very narrow scarious margin, which is fimbriate-ciliate at the obtuse 

 apex, the exterior successively shorter, their tips obscurely greenish. Appendages 

 of the style triangular-lanceolate, acutish. Alveoli of the receptacle lacei^ate- 

 toothed. Achenia short, turbinate but compressed, silky-canescent. — The allied 

 L, pluriflora, of which I have only some capituli, has a more campanulate 15 - 18- 

 flowered involucre, with lanceolate, moderately acute scales. 



284. L. Wkightii (sp. nov.): suffruticosa, glabra; caulibus simplicibus ; foliis 

 oblanceolatis mucronato-acuminatis uninerviis integerrimis marginibus hirtello- 

 scabris; capitulis plui'imis in corymbuni compositum fasciculato-confertis 9-10- 

 floris ; involucro campanulato floribus subdimidio breviore, squamis ovato-oblongis 

 obtusissimis subcarinatis glabris marginibus subciliatis. — Valley of the Pio Grande, 

 60 or 70 miles below El Paso ; Sept. — Stems a foot or more in height from a 

 woody base. Leaves dull gi'een, a little scabrous, thickish, all tapering to the base ; 

 the lower, two inches long and nearly three lines wide above the middle ; the upper, 

 similar but smaller. Heads crowded, three lines long. Scales of the involucre all 

 appressed, obscurely greenish at the tips. Appendages of the style triangular- 

 lanceolate, acute. Achenia short, silky-canescent. — Allied to L. lanceolata, but not 

 puberulent, the leaves only one-nerved, the involucre shorter, &c. Both, with the 

 preceding and L. hirtella, are strict congeners. 



285. L. HIRTELLA (sp. uov.) : cinereo-hispidula ; caulibus e basi suffi-uticosa sim- 

 plicibus virgatis; foliis spathulato-linearibus mucronato-apiculatis uninerviis inte- 

 gerrimis vel inferioribus dentibus 1-3 instructis ; capitulis in corymbum simplicem 

 confertis 14-floris; involucro campanulato floribus subdimidio breviore, squamis ob- 

 longis obtusiusculis fere ecarinatis glabris. — Valley of the Limpia, " growing in 

 dense bunches" ; Aug. — Stems slender, 12 to 18 inches high, clothed, as are the 

 leaves, with a short cinereous-hispid pubescence. Leaves about an inch long, and 

 the larger a line wide towards the apex. Heads rather crowded in a small and 



