96 PLANTS WRIGHTIAN^. Y. 



nearly simple terminal corymb, solitary or in pairs on the more or less recurved 

 peduncles, four lines long. Scales of the involucre obscurely herbaceous near the 

 tip. Appendages of the style short, triangular-lanceolate, acute. Achenia short, 

 silky-villous. 



286. L. (Chrysothamnus) graveolens, Torr. 8f Gray, Fl. 2. p. 234. Base of 

 the Guadalupe Mountains, New Mexico ; Sept. — Here belongs No. 102 of Geyer's 

 collection, which in the published account is wrongly referred to L. viscidiflora. 

 The latter, abundantly gathered by Fremont, Geyer, and Burke, has the involucre 

 viscid only when young, and not always then, whence Nuttall's later specific 

 name of pumila is preferable. Burke also gathered L. albicaulis, in the Rocky 

 Mountains, confirming the character of that species. 



287. L. (Chrysothamnus) pulchella (sp. nov.) : fruticosa, ramosissima, glabra ; 

 ramis gracilibus apice corymbosis; foliis anguste linearibus uninerviis, ramealibus 

 subulatis ; capitulis subfasciculatis 5-floris ; involucro angusto pentagono fioribus 

 subdimidio breviore, squamis plurimis oblongo-lanceolatis cuspidatis valde carinatis 

 albis dorso ad apicem viridibus arete quinquefariam imbricatis ; acheniis acute 5-6- 

 angulatis fere glabris ; pappo copioso, setis rigidulis omnibus sequilongis. — A 

 shrubby plant, apparently one or two feet high ; the slender branchlets whitish. 

 Leaves coriaceous, 8 or 9 lines long. Involucre 4 lines long ; the chartaceous ap- 

 pressed scales imbricated in five vertical ranks, about six scales in each, the exterior 

 successively shorter, all very much carinate, herbaceous , on the back next the apex, 

 which is acuminate-cuspidate. Corolla, style, &c., as in the other species of the sec- 

 tion Chrysothamnus. Receptacle small, alveolate-toothed, as in the others. Ache- 

 nia fully two lines long, glabrous to the naked eye ; but sparingly and minutely pu- 

 bescent under a lens. Pappus half an inch long, of slender, but rather rigid bristles, 

 all of the same length and strength. — This curious species is allied to Chrysothamnus 

 depressus, Nutt. PI. Gamb., which is a smaller plant, with more slender and taper- 

 ing involucral scales. These are more or less evidently quinquefarious in all the 

 proper Chrysothamni, but in none do they appear so strictly so as in these two spe- 

 cies, on account of their greater number and of their strong carination. 



289. L. CORONOPIFOLIA (sp. nov.) : glabra, subglutinosa ; caulibus e basi sufi'ru- 

 tescente simplicibus ; foliis pinnatipartitis, lobis utrinque 2-4 rhachique lineari- 

 filiformibus; capitulis ad apicem caulis capitato-congestis 9 - 11-floris; involucro 

 cylindraceo-campanulato fioribus subdimidio breviore, squamis lineari-oblongis ap- 

 pressis ecarinatis obtusis. — Along the Rio Grande, Texas; Sept. — Stems 12-18 

 inches high, leafy to the top. Leaves an inch or more in length ; the slender lobes 

 5 to 8 lines long, punctate. Heads 4 lines long, sessile or nearly so, crowded in a 

 terminal subglobose glomerule. Scales of the involucre thickish, nearly fiat, a little 

 greenish towards the tip. Appendages of the style triangular-lanceolate. Achenia 

 short, silky-canescent. — An undoubted congener of No. 283, 284, and 285, which, 

 with L. plurifiora and L. lanceolata, I cannot generically distinguish from Linosyris 

 punctata, villosa, and Tartarica of the Old World ; and L. lanceolata too closely re- 

 sembles L. viscidiflora well to allow Nuttall's genus Chrysothamnus to stand for the 

 4-5-fiowered species, notwithstanding the slender appendages of the style. On 



