I 



VI. 



PLANT-ffi WRIGHTIAN^. 



97 



A. ODORATA, Gray, Pl Fendl l c, ^ Pl. Wright p, 122. Along the Eio Graiide 

 near El Paso ; May, in flower; July, in fruit. (1261.) 



^ A. scAPosA, Nutt; Torr. 8r Grai/, Fl. 2. j^ 382: the viUous form. Stony prai- 

 ries, near Rock Creek and Escondido Springs ; June. (1262.) 



Gray, l c. Eocky hills along the Pecos, and at Es- 



A. LINEARIFOLIA, Tori\ 



condido Springs ; June. (1263.) 



A. LiNEARiFOLiA, var. caule elatiore (ultrapedali) strictiore. — Prairies of the 

 Leona, Western Texas ; May. (1264.) 



Grai/, PL Fendl p. 102, adnot Valley of the Sierra 



Hymenothrix Wislizeni, Urai/, PL FendL p. 102, adnot Valley of tl 

 / de los Animos, south of the copper mines, New Mexico ; Oct. (1265.) "Also 

 common in Sonora." — The specimens well accord with that of AVislizenus. I think 

 the root is perennial. The disk-corollas are moderately 5-lobed ; the anthers partly 

 exserted, and yellow, like the flowers. The achenia are 4 - 5-angled, and minutely 

 hairy. The pappus is correctly described in PL FendL L c, except that the palcate 

 portion is mostly rather longer than the awn. — The following plant, with the in- 

 volucre and pappus of Hymenothrix, might well claim the rauk of a geiius, on 

 account of its rayless capitula, with the limb of the corolla partcd to the base. 



H. 1 Wrightii (sp. iiov.) : fioribus purpurascentibus ; ligulis nullis ; corollis fl. 

 hermaphroditis limbo 5-partito, lobis oblongo-Iinearibus ; acheniis villosis ; paleis 

 pappi 15 -18 lanceolatls ncrvo valido in aristam breviusculum desinente; foliis in- 

 ferioribus 2 - 3-ternatisectis, superioribus trisectis segmentis lineari-filiformibus iii- 



On hills between the Barbocomori and Santa Cruz, aiid on the side 



tegerrimis. 



of the Chiricahui Mountains, Sonora; Sept. 



(1266.) 



Root perennial. 



Stems 



glabrous, rigid, corymbosely branched, 2 or 3 feet high. Lower leaves biternately 



divided and more or less hirsute; the others 



glabrous : segmonts 



of the upper 



leaves an inch or more in length, and less than a line in width. Peduncles or 

 branches of the loose corymb glandular, or entirely glabrous. Heads 4 or 5 lines 

 in length, about 30-flowered. Involucre shorter than the disk, glabrous, biserial ; 

 tlie exterior scales 4 or 5, linear and smaller; tlie inner about 7, obovate or oblong, 

 partly scarious, tinged with purple. Corolla pale purple ; the limb 5-parted neaiiy 

 to tlie summit of the glandular tube ; the lobes oblong-Iinear, spreading, a line and 



a half in length, cqual, or in some of the marginal flowers more or less irrcgular 

 froni the partial union of two of the lobes. Anthers purple, wholly exserted, 

 tipped with an ovate appendage, bidentate at the base. 



Branches of the stvle flat, 



linear, like those of H. Wislizeni, except that the conical appendage is subulate- 

 pointed. Ecceptacle small and nearly flat, tuberculate, naked. Achenia quadrangu- 

 lar, tapering to the base, villous. Puppus rather longcr than the achenia, shorter than 



I 



linearibus rigidis integerrimis paucisve caulinis trilobis ; involucri squamis oblongo-lanceolatis acummatis, 

 interioribus acuminatissimis inferne scarioso-marginatis ; pappi paleis lanccolatis sensim anstato-acumi- 

 natissimis (nervo evanido) corollam disci suba^quantibus. — On mountains near the copper mines, and 

 near the Mimbrcs, New Mexico ; April, June. — Stems slender, 8 to 12 inches high- Radical lcaves 

 ca^spitose, 2 to 3 inches long, barcly a line wide, the cauline several on the lowcr half of the stem, 

 similar, or some of the larger ones furnished with a short lobc on each side above the middle. Hcad and 

 ligules nearly as large as those of A. argentea. Palcai of the paj)pus 3 lines long. 



