VI. 



PLANT^ WEIGHTIAN.I:. 



93 



^ 



inner of as many alternate and larger palese, cleft beyond the middle into tliree 

 scabrous awns; the middle awn twice the length of the two lateral. — This plant 

 has more of the habit of Lebetina than of Adenophyllum coccineum. Were the 

 three aristiform segments of the inner pappus again trifid, it would be a true Le- 

 betina. Although the paleae are twice as numerous as in Adenophyllum coccineum, 

 and deeper cleft, I refer it to that genus because it is the older one, and should 

 consider Lebetina merely as a section of it, resting the character mainly on the 

 double pappus. 



Dysodia chrysanthemoides, hagasca. D. fastigiata, DC, excl. syn. Open prai- 

 ries, on the San Pedro, Sonora; Sept. 



Hymenatherum (Aciphyll^a) aceeosum, Gmy^ Pl. Wright p. 115. Stony prai- 

 ries of San Felipe Creek, Western Texas ; hills near El Paso ; and around the hot 

 springs between the copper mines and the Mimbres, New Mexico. Also heads of 

 the Aqua Prieta, Sonora. (1241.) 



H. PENTAcmETUM, DC, var. (=362, 363) Grai/, Fl. Wriglit. p. 117. H. Ber- 

 landieri, DC. Rocky hills of the San Pedro and Pecos, Western Texas; May, June. 

 (1242.) 



H. TENUiFOLiuM, Cass. ; Gra^, Pl. Wriglit. p. 118; var. "? ramis brevibus; folio- 

 rum lobis paucioribus et longioribus ; paleis j)appi alternis saepius minoribus vel 

 minus aristatis paucisve fere muticis. — Stony hills near EI Paso ; March. (1408.) 



An early state probably of H. tenuifolium, with the fohage much as in II. pen- 

 tachaetum ; also approaching that species in the tendency to a reduction of the 



alternate paleae of the pappus. 



H. POLYCH^TUM, Grai/, l. c. ; var. fpliorum lobis lincaribus ; capituHs paucioribus. 

 Prairies, from Las Playas to the copper mines, New Mexico ; Oct. (1243.) 

 Mixed with this species, as in the former collection, and so like it as to be over- 

 looked m collecting, I find a single specimen of " 



LowELLiA AUREA, Gray, Pl. Fendlp. 91, ^ Pl. Wright. p. 118. — The palese of 

 the pappus are about 12 in this specimen. 



Tagetes micrantha, Cav. Ic. 4. p. 31. t 352; DC. Prodr. 5. p. 646. Moun- 

 tains around the copper mines, New Mexico ; Aug., Oct. (1244.) — " Called Anis 

 by the Mexicans." The plant, raised from Mr. Wrighfs seeds in the Cambridge 

 Botanic Garden, exhales a powerful and pleasant odor of Anise, w^hen bruised. 

 The ligules are white ("albicans," Cav.), usually solitary, occasionally two, and 

 rarely three, in each head, only I7 to 2 lines long, nearly entire, 2 - 3-denticuIate or 

 2-Iobed at the apex. Disk-flowers 3 to 8. Pappus of two awns and two broad 

 paleae ; the latter unequal, shorter than the disk-corolla, sometimes connate into a 

 sheath inclosing the awns, which are longer than the corolla. 



Chrysactinia Mexicana, Grag, Pl. Fendl p. 93, Sf Pl. Wright p. 119. Ilills 

 at the Big Bend of the San Pedro, Western Texas; May. (1245.) 



Porophyllum maceocephalum, DC. Prodr. 5.p. 648. — Shaded mountain ravines 

 on the Sonoita, Sonora ; Sept. (1246.) — Thc primordial and lower cauline leaves 



are lincar and liiicar 



ely becoming ovate-Ianceolate, an inch 



long. The upper ones arc elliptical and broadly oval, 8 or 10 lines long, about the 



pl. wr. — 13 



•- 



I 



