V. PLANTS WKIGHTIAN^. 129 



416. Lygodesmia aphtlla, DC. Prodr. 7. p. 198; Torr. Sf Gray, Fl. 2. j-j. 485. 

 Low prairies, Austin, Texas ; May. — This form bears a number of cauline leaves, 

 but they are all filiform. 



417. L. juncea, Don; Hook. Fl. Bor.-Am. 1. p. 295. t. 103; Gray, PI. Fendl. 

 J). 113. Prairies on the Pecos; Aug. The heads are larger than in Fendler's 

 plant, an inch long. 



418. Krigia occidentalis, Niitt, var. mutica, Torr. Sj" Gray, Fl. 2. p. 468. 

 Prairies near San Marcos, Texas. — The awned and the awnless states of this plant 

 grow together : in the latter the paleaceous pappus is also somewhat reduced in size. 

 Some specimens of this awnless variety of Krigia occidentalis are mixed with those 

 of Apogon gracilis, DC. in Berlandier's collection (between Bexar and Austin, 

 April, 1828), whence was doubtless derived De Candolle's character " acheniis 

 brevissime papposis " of the last-named species. The larger specimens belong really 

 to Apogon, are wholly destitute of pappus, and entirely accord with Apogon 

 humilis, Ell, 



•f Crepis ambigua, Gray, PI. Fendl. p. 114. Hills between the Limpia and the 

 E.io Grande; Aug. 



Nymph^a elegans, Hook. — No. 3. p. 7, which I referred with doubt to Nymphsea 

 Mexicana, Zucc, has been figured as a neAv species by Hooker, in Bat. Macj. t. 4604, 

 under the above name, from living plants raised from seeds taken from Wright's 

 dried specimens. The flowers have a pale blue tint. 



Wislizenia. — Cleomella Coulteri, Harv. ined., mentioned on p. 12, is Wislizenia 

 refracta, Engelm. ])• H- t. 2. 



Laphamia, p. 99. — The disk-corollas are wrongly said in the character to be 

 five-toothed. They are commonly four-toothed in all the species, and they are so 

 represented in the analyses of the two species figured on Plate IX. 



L. (MoNOTHRix) Stansburii, p. 101. — Dr. Torrey informs me that he has figured 

 this plant in the notice of the plants collected by Captain Stansbury (appended to 

 his report on the exploration of the Salt Lake region), under the name of Mono- 

 thrix Stansburii, that name having been chosen, and the plate struck off', before he 

 was aware that I thought it needful to join these two species with unisetose pappus 

 to a genus of which two species have no pappus at all. Should it be preferred to re- 

 tain them as a separate genus, they will of course bear Dr. Torrey's name of Mono- 

 thrix. Otherwise that name would designate merely a subgenus of Laphamia. 



