﻿PLANTS FENDLERIAN5:. ] 15 



short. Achenia slender, half an inch long including the beak. Pappus one third of an 

 inch long, of minutely scabrous and, for this genus, rather rigid bristles, but finer than in 

 Troximon roseutn, Nutt. — From its resemblance to the present species and the short 

 beak of its half-formed fruit, I suspect that T. roseum also is a Macrorhynchus ; but its 

 pappus is absolutely as well as relatively longer (half an inch in length) than in this plant, 

 its involucral scales all more prolonged and acute, its ligules smaller, &c* 

 " 456. Taraxacum palustre, DC, var. latifolium : foliis spathulato-oblongis obtu- 

 sissimis. (T. montanum, Nutt.! in Trans. Amer. Phil. Soc. (n. ser.) 7. p. 430, non DC.) 

 Banks of Santa Fe Creek ; May. (f495, 500, 501.) — The leaves in a specimen from 

 Nuttall are half an inch, in Fendler's fully an inch, in width, sinuate-toothed ; those 

 towards the base often narrower and sharper, and runcinate-refiexed.f 



|457. Lactuca elongata, y. sanguinea, Torr. &■ Gray, Fl. 2. p. 496. East of 

 Mora River; August. (491.) 



458. L. graminifolia, Michx., approaching L. elongata by the runcinate-pinnatifid 

 radical leaves. — Santa Fe Creek in the mountains ; July. (504, f 505.) 



459. Mulgedium pulchellum, Nutt. Loose, gravelly soil, Santa Fe Creek ; July. 

 (506.) Also Rock Creek, &c. (492.) 



1 460. M. Floridanum, DC. ; Torr. & Gray, Fl. 2. p. 498. Council Grove. (494.) 



461. Sonchus oleraceus, Linn. Fields around Santa Fe ; July. (507, f 508.) 

 f462. S. asper, PHI.; Torr. & Gray, I. c. p. 501. Waste places, Santa Fe. (502.) 



* Specimens of Troximon glaucum, j9. dasycephalum, Torr. <$• Gray, in Geyer's Oregon collection (no. 

 G66) and in that of Mr. Spalding, with the heads sometimes an inch and a half in diameter, and the leaves 

 lanceolate or oval-lanceolate, often coarsely toothed, and an inch and a quarter wide, evidently constitute the 

 T. taraxicifolium, Null., from the same region. 



+ At Saltillo, Dr. Gregg collected a Dandelion, which is doubtless Taraxacum Mexicanum, DC, with the 

 young leaves somewhat hairy, and the neck and whole scape at first very woolly, but becoming naked with 

 age. The achenia are nearly smooth towards the base. 



%* For Hymenatherum gnaphalodes, p. 90 (note), I desire, by a slight change, to substitute the name 

 Hymenatherum Gnaphalopsis, and to cite as a synonyme the Gnaphalopsis micropoides, DC. Prodr. 7. p. 

 248 (inter Compos, incertae sedis). De Candolle founded this genus upon a plant gathered at Monterey, 

 New Leon, in the month of January, by Berlandier. Although he describes his plant as dioecious ? with an 

 involucre of exterior subfoliaceous scales and an inner series of distinct, glabrous scales, observed no ligules, 

 describes the pappus as consisting of only five paleas, and makes no mention of globular pellucid glands under 

 the wool of the leaves, &c, yet I am confident of its identity with Dr. Gregg's plant (which really accords in 

 none of these respects) from the same habitat, and gathered at the same season of the year. The specimen 

 examined probably was very imperfect, and with the ray-corollas fallen or abortive. Much finer specimens 

 of our plant (from Gregg's collection) have just reached me, with the stems branching after the manner of 

 Micropus, and four inches in length ; and a reexamination confirms all the characters previously assigned. 



