﻿PLANTS FENDLERIANiE. 91 



/f408. L. aurea. Between Cold Spring and Upper Spring, west of Cimarron 

 Creek ; Aug. (436.) — Stem a span or more in height, branching, leafy, very much re- 

 sembling Dysodia chrysanthemoides, except in the ample and conspicuously exserted rays. 

 Lower leaves mostly opposite, the others alternate, all pinnately parted or pectinate ; the 

 segments about 11, filiform-linear, entire, not broader than the rachis ; the glands large 

 in proportion, orange-colored. Heads solitary on naked peduncles, terminating the co- 

 only two inches high, terminated by sessile and equally woolly heads about a third of an inch long. Leaves 

 3 or 4 lines long, one or two lines broad near the summit. On separating the thick covering of white wool, 

 a few large yellowish glands, like those of the tribe, may be seen on the leaves. From the involucre it sep- 

 arates more readily, and shows from 4 to 6 such globular glands arranged in two rows along the apex of each 

 scale between as many pinnate veinlets : the glands appear to be superficial. Receptacle convex, naked. 

 Ligules yellow, but turning greenish, 2 lines long. Pappus, style, &c, nearly as in the foregoing species, 

 of which, notwithstanding its remarkable habit, it is certainly a congener. 



ACIPHYLLiEA, DC. (sub Dysodia). 



Capitulum multiflorum, heterogamum ; floribus radii 5-8, ligulatis, fcemineis, disci tubulosis hermaphro- 

 ditis. Involucri squama? uniseriales, in cupulam oblongo-cylindricam apice breviter 8- 14-dentatam con- 

 cretae. Receptaculum planum, minute alveolatum. Styli rami fl. disci cono brevissimo hispidulo capitellati. 

 Achenia gracilia, teretia, multistriata. Pappus uniserialis, e squamellis circ. 20 conformibus (alternisve paulo 

 minoribus), in aristas setasve scabras inajquales 3-5 palmato-partitis, constans. — SuflVuticulus ericoideus, 

 ramosissimus, diffusus, vix semipedalis, fere glaber ; foliis oppositis alternisve confertis, sa»pe in axillis fasci- 

 culatis, acerosis, integerrimis, grosse glandulosis ; capitulis (3-4 lin. longis) apice ramulorum solitariis sessi- 

 libus, foliis supremis quasi calyculatis ; floribus flavis. 



S A. acerosa. — Dysodia {% ? Aciphyllrea) acerosa, DC. Prodr. 5. p. 641. Mexico, in the State of San 

 Luis Potosi, Berlandier, ex DC. Near Saltillo and Parras, Dr. Gregg. Donana, north of El Paso del Norte, 

 Dr. Wislizemis. — Called " Yerba de San Nicolas" at Saltillo : appears to be abundant in that part of Mex- 

 ico. There are several forms in the collections, varying in the size and fasciculation of the leaves (the longer 

 of which are half an inch long), &c. ; but apparently all belong to one species, which I suppose to be that of 

 De Candolle also, although I have not observed the involucre to be fewer than 10-toothed, nor are the achenia 

 glabrous (though they appear so, except under the lens), but sparsely hairy. Perhaps there is more than one 

 species. The whole aspect of the plant is very unlike Dysodia; from which the simpler pappus may serve 

 technically to distinguish it ; while from Hymenatherum it is distinguished by the numerous and more than 

 3-aristate palese of the pappus. 



THYMOPHYLLA, Lagasca. 



Capitulum homogamum. Pappus e " paleis 5 truncatis brevibus," vel in coronam fere integerrimam con- 

 cretis. Caet. Hymenatheri. — Suffruticuli multicaules, ramosissimi, albo-lanosi ; foliis confertis setaceis inte- 

 gerrimis, vel infimis pinnato-partitis ; pedunculis filiformibus nudis monocephalis. 



• T. setifolia, Lag. Nov. Gen. Elench. Hort. Madr. p. 25. Ex char. Lagasc. : Pappus pentaphyllus, 

 paleis truncatis brevibus: folia opposita subsetacea, tomentosa, vix sesquilineam longa : pedunculi lerminali, 



