﻿98 PLANTS FENDLERIAN^. 



oblong scales of the pappus are nearly as long as the tube of the corolla, but are con- 

 cealed by the long villous hairs of the achenium.* 



* Chzenactis denudata, Nult. in Jour. Acad. Philad. (n. scr.) 1. p. 177, from Pueblo de Ios Angelos, Cali- 

 fornia (fide spec, in herb. Lowell.), is the same as C. lanosa, DC. The subjoined appears to be an un- 

 described species : — 



Ch^enactis filifolia (Harv. Sf Gray, in PL Coull. ined.) : subarachnoidea, demum glabrata ; caule 

 corymbosi-ramoso usque ad apicem folioso ; foliis pinnatipartitis (summisve simplicibus) ; segmentis 5- 

 9 rachique filiformibus integerrimis ; pedunculis brevibus non glandulosis; corollis (fiavis) radiantibus infundi- 

 buliformi-ampliatis irregularibus discum non superantibus ; pappi paleis 4 oblongis obtusis acqualibus. — Cali- 

 fornia, Coulter. — Heads about as large as in C. lanosa. Lobes of the leaves entire, more slender and sparse 

 than in C. tenuifolia. In that species the scales of the pappus in the disk are unequal, lanceolate, and acute 

 or acuminate. In this they are much shorter and broader, obtuse or rounded, and erose at the apex, espe- 

 cially those of the ray. — There is another species in Fremont's, and also in Hartweg's, Californian collection, 

 which is exceedingly well marked by the great inequality in the palese of the pappus, viz. : — 



C. heterocarpha (Torr. Sf Gray, Fl. ined.): annua, nana, lanosa, demum glabrata; caule folioso 

 plerumque simplici monocephalo ; foliis pinnatipartitis, segmentis 4-9anguste linearibus breviusculis inte- 

 gerrimis rachi subangustioribus ; pedunculo eglanduloso capitulum majusculum e.ximie radians vix duplo ex- 

 cedentibus; corollis (aureis) radiantibus infundibuliformi-ampliatis, limbo irregulari discum superante ; achenio 

 hirsuto; pappo disci e paleis 4 lanceolato-oblongis obtusissimis corollam scquantibus et 4 alternis parvis obo- 

 vatis 5-6-plo brevioribus. — California, Fremont (third expedition), Hartiveg (no. 1792). — Flant 3 to 5 

 inches high, rather slender, leafy to within an inch of the head, the stronger specimens inclined to branch 

 above and bear one or two additional heads. Leaves an inch and a half long ; the lateral lobes two or three 

 lines in length, almost filiform. Head larger than in C. lanosa, nearly equalling that of C. achillea3folia : in- 

 volucre half an inch long. The somewhat palmate limb of the radiant corollas is four lines broad when ex- 

 panded ; the lobes as long as the tube. Pappus of the radiant flowers as in the disk, but shorter. 



The following appears to constitute a distinct genus, which should probably stand (perhaps with Amauria, 

 Benth.) next to Cha?nactis rather than with the Madiea?, notwithstanding the total absence of pappus. 



ACARPIL'EA, Harv. fr Gray, in PL Coult. ined. 



Capitulum multiflorum, homogamum ; fl. omnibus tubulosis, exterioribus ampliatis subradiantibus. Involu- 

 crum campanulatum circ. 24-phyllum; squamis biseriatis, lanceolatis, discum aequantibus, planis. Recepta- 

 culum nudum, planum. Corollse, tubo glanduloso-pubescente, disci graciles 5-dentatoe ; radii sursum infundi- 

 buliformi-ampliatae, 5-loba;, limbo subirregulari. Anthers exsertffi. Styli rami filiformi-subulati, hirlelli (ut in 

 Ch:enactide). Achenia omnia (ut videtur) fertilia et conformia, lineari-clavata, subcompressa, multistriata, 

 glabra, calva, extima paulo incurvata, in squamis involucri haud occulta. — Herba erecta, viscido-puberula ; 

 foliis alternis 2- 3-pinnatisectis ; capitulis paniculato-corymbosis ; floribus luteis. 



A. artemisi^folia, Hare. 8f Gray, L c. — California, Coulter. — Herb apparently three feet high, naked 

 above: the root unknown. Leaves 3 or 4 inches long, petioled, glandular-hoary, especially underneath ; the 

 pinna?, segments, and lobes linear or oblong, obtuse, numerous and approximate. Involucre half an inch long; 

 the outer scales herbaceous ; the inner narrower and more scarious, not complicate. Marginal corollas scarcely 

 longer than the others. The achenia are immature, but apparently all fertile ; the outer are not at all involved 



