- PLANTE FENDLERIANS. hee a 115° 
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 roseum, 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. ieeccar Te spathulato-oblongis obtu- 
sissimis. (J. montanum, Nutt.’ in Trans. Amer. Phil. Soc. (n. ser.) 7. p. 430, non DC.) 
Banks of Santa Fé Creek; May. (1495, 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-reflexed.t+ ' 
7457. Lacruca ELoNGATA, y. sancuinea, Torr. § Gray, Fl. 2. p. 496. East of 
Mora River; August. (491.) 
458. L. craminiroxia, Michx., approaching L. elongata by the runcinate-pinnatifid 
radical leaves. — Santa Fé Creek in the mountains; July. (504, + 505.) 
. 459. Mureepium puccueriom, Nutt. Loose, gravelly soil, Santa Fé Creek ; July. 
(506.) Also Rock Creek, &c. (492.) Cos 
+460. M. Frorwanum, DC.; Torr. § Gray, Fl. 2. p. 498. Council Grove. (494.) . 
461. Soncnus oteraceus, Linn. Fields.around Santa Fé; July. (507, ¢ 508.) 
+462. S. asper, Vill. ; Torr. § Gray, l. c. p. 501. Waste places, Santa Fé. (502.) 
* Specimens of Troximon glaucum, 8. dasycephalum, Torr. § Gray, in Geyer’s Oregon collection (no. 
666) 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, Nuit., 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. incerte 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 dicecious ? 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 palew, and makes no mention of globular pellucid glands under 
oe pthe wool of the leaves, &c., yet I am confident of its identity with Dr. Gregg’s plant (which really accords in 
7 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 reéxamination confirms all the characters previously assigned. 
* 
