V. 



PLANT^ WRIGIITIAN^. 



125 



t 



> 



401. S. riLiFOLius, Nutt., var. Jamesii, Torr. 8r Gray, Fl 2. p. 444. Sides of 

 mountains, near El Paso ; Sept. " Stems one or two feet liigh." — Differs from S. 

 longilobus priricipally in tlie shorter lobes of the leaves, especially the terminal one, 

 and in the suffrutescent base to the stem. 



402. S. sPARTioiDEs, Torr. §• Grat/, Fl. 2. p. 438. Salt plains, at tlie Western 

 base of the Guadalupe Mountains ; Aug. — Heads larger than in S. longilobus ; the 

 leaves all entire. 



t S. Tampicanus, DC. Prodr. 6. p. 427. Between W. Texas and El Paso ; coU. 

 of 1851. Stems a foot high from an annual or biennial root, branching above ; the 

 leaves and branches glabrous, but showing vestiges of floccose wool. Radical and 

 lowest cauline leaves petioled ; the petiole naked at the base. Lobes of the leaves 

 oblong or cuneate, small^ all coarsely incised. Heads numerous, corymbose, three 

 lines long. 



403. S. AUREus, Linn., var. borealis, Torr. 8f Grai/, Fl. 2. p. 442 ? Mountains 

 beyond the Limpia ; Aug. The flowers have all fallen from the involucres ; they 

 were probably those of the preceding year.* 



404. Haploesthes Greggii, Gray, PL Fendl. p. 109, adnot. On the Uio Grande, 

 Texas. " Leaves somewhat succulent." 



405. Centaurea Americana, Nutt.; Torr. 8f Grai/, Fl. 2. p. 453. Prairics of 

 Western Texas ; May. 



406. CiRsiuM altissimum, Spreng.; DC. Prodr. 6. p. 640; Torr. §* Grai/, Fl. 

 2. p. 457; var. lanugine deciduo. Banks of a stream between the Pecos and the 

 Limpia ; Au 



407. C. UNDULATUM, Sprencf. ; DC. Prodr. 6. p. 643 ; Torr. 8f Gray, l. c. 

 Prairies, near San Antonio, Texas ; May. — Various forms of the species are in 

 the collection of 1851. It is common and very widely spread throughout the West- 

 ern region. 



408. C. UNDULATUM, var. /3. Torr. §• Grai/, I. c. C. Hookerianum, Nutt. m Trans. 

 Amer. Phil Soc. 7. p. 418. Cnicus discolor, Hook. Fl. Bor.-Am. (parte). Valley 

 between the Pecos and the Limpia ; Aug. Also in the coU. of 1851. — I fear this 

 also passes into C. oclirocentrum, Gray, Pl. Fendl. p. 110. Perhaps it is likewise 

 C. canescens, Nutt. ; w^hich can hardly be the next. 



X C. ViRGiNiANUM, Michx., var. y. Torr. §• Gray, l. c. Between Western Texas 



and ElPaso; coll. of 1851. 



409. Perezia runcinata, Lagasca; Gray, Pl. Fendl. p. 110, adtiot. Clarionea 

 runcinata, Don; DC. Prodr. l.p. 62. Bluffs above Austin, and on the Bio Grande, 

 Texas. 



410. P. nana (Gray, Pl. Fendl. l. c.): caulibus e caudice lanato repente foliosis 

 monocephalis ; foliis rotundatis vel cuneato-obovatis amplexicaulibus coriaceis reti- 

 culatis minute glanduloso-scabridis nitidis undique spinuloso-dentatis ; capitulo 

 20-30-floro subsessili folium summum haud superante ; involucro campanulato 

 ebracteato triseriali, squamis ciliolatis mucronato-cuspidatis, extimis ovatis, intimis 



Senecio ? flocclfcrus, IDC. is a Malacothrix, probably M. saxatilis. 



VOL. III, ART. 5. — 17. 



