﻿PLANTVE FENDLERIAN^E. 97 



S 417. Hvmenopappus flavescens (sp. nov.) : floccoso-tomentosus vol incanus, dc- 

 mum glabratus; caule apice corymboso; foliis 1 -2-pinnatipartitis lobis linearibus, 

 ramealibus integerrimis vel basi lobulis 1 -3 instructis ; capitulis dense corymbosis ; in- 

 volucri squamis circiter 8 ovatis viridibus apice petaloidea eorollisque luteis ; acheniis 



villosis ; pappo conspicuo corollas tubo dimidio breviore, paleis obovatis integerrimis. 



Between San Miguel and Las Vegas, New Mexico ; Aug. : (464), with the lobes of the 

 leaves broadly linear. Also a form of the same, with finer lobes to the cauline leaves, 

 in deep sand a few miles west of Willow Bar of the Cimarron ; Aug. in fruit (4G3) ; 

 and near the Cimarron by Dr. fVislizenus. — Plant 15 inches high, bearing a rather 

 ample corymb of larger heads than those of IJ. corymbosus; the appressed involu- 

 cral scales petaloid only towards the apex and edges, where they are tinged, like the 

 corolla, with a decidedly yellow color. The achenia and pappus are more nearly as in 

 H. artemisirefolius. Lobes of the leaves from one to three lines in width. Limb of 

 the corolla broadly campanulate, longer than the lobes, both together about the length of 

 the glandular tube. — In Dr. VVislizenus's specimen, the earlier, white-woolly radical 

 leaves are simply pinnatifid, or some of them almost entire ; the succeeding bipinnately 

 divided ; the corymb very large and full. 



t 418. H. tenuifolius, Pursh ; Ton. Sf Gray, Fl. 2. p. 373. Prairies, Ojo de Ber- 

 nal to Rock Creek, New Mexico ; Aug. (465.) 



S 419. H. luteus, Nutt. ; Torr. fr Gray, I. c. Along the sloping sides of dry hills, Santa 

 Fe; May to July. (456.) — These beautiful specimens, the larger over a foot in height, 

 show the plant more fully developed than the original ones of Nuttall. The full-grown 

 heads are half an inch in length and diameter ; and the appressed scales of the involucre 

 are a little tinged with purple at the tip. The anthers also appear to have been pur- 

 plish ; but the corolla is cream-color, or pale-yellow, and its teeth much shorter than the 

 cylindraceous throat, which exceeds the tube in length. The spatulate or narrowly 



nervo evanido. — High mountains around Cosiquiriachi in the Sierra Madre west of Chihuahua, Oct., Dr. 

 Wislizenus. — Annual; the stem 5 to 9 inches high, bearing few or rather numerous paniculate heads. 

 Leaves minutely glandular-punctate, as in many Heleniese ; the lowest opposite and often simple, linear- 

 filiform ; the others mostly alternate and 3-parted, with the filiform lobes entire or rarely 2- 3-lobed ; the 

 uppermost again simple. Heads about as large as in S. abrotanoides ; the obovate scales of the involucre 

 petaloid (tinged with yellow) at the summit. Tube of the corolla glandular, the limb 4-lobed ; the pistillate 

 flower, observed in only two out of twenty capitula, with an obovate ligule, not larger than the perfect flowers. 

 Pappus at length tinged with purplish, the ample paleas entire, the awned tips of the alternate ones equalling 

 or at length exceeding the corolla. 



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