^ h 



92 



PLANT^ WRIGHTIANuE. 



V. 



Lcssing's Brachycome xanthocomoides, of which I have seen an original specimen, 

 barely in flower, communicated by Schlechtendal to the herbarium of the Paris Mu- 

 seum. This is a diffusely spreading plant; the rays, I think, are not yellow; the 

 receptacle is conical, and the involucre, ovaries, corolla, &c. are the same as in 

 Aphanostcphus, to which I should refer the plant, were it not that the appendages 

 of the style in thc pcrfect flowcrs are oblong-lanceolate. Keerlia ramosa, De Can- 

 dolle's second species, founded on a plant collected by Keerl himself, has a strongly 



L 



conical receptacle (which is abundantly manifest in De Candolle's own specimen, as 

 well as in those rctaincd by Martius), and plainly belongs to De Candolle's next ge- 

 nus ; indccd, it is difRcult to distinguisli it from Aphanostephus ramosissimus itself. 



congener of his earlier-published Aphanostephus 



(The coroniform pappus of the latter is minutely setulose-fringed; of the former, 

 more setulose and less coroniform.) Keerlia skirrobasis, De Candolle's third spe- 

 cies, which is figured in Delessert's Icones, also has a well-marked conical recepta- 

 cle, and is the same species as his own Leucopsidium Arkansanum, and is a strict 



ramosissimus, as I have already 

 remarked, in Pl. Fendl. p. 71. Keerlia, DC, must therefore be divided between 

 Gutierrezia and Aphanostephus. Singularly enough, however, while none of De 

 Candolle's species really accord with his character, I some years ago received a Tex- 

 an plant that does, in tlie essential points of a flat receptacle, a minute coroniform 

 pappus, and acuminate membranaceously-margined involucral scales ; and this was 

 described under the name of Keerlia bellidifolia. To this a second and in some re- 

 Bpects ditferent species of Lindheimer's later collection (K. effusa) was added re- 

 cently, but before I had obtained tlie information above recorded. And for these, 

 as the case now stands, since they are already published under this name, I propose 

 to continue the name Keerlia, with a new character, as subjoined.* 



pappo in radio et disco conformi brevissimo paleaceo-coroniformi. — Keelia linearifolia, BC! Frodr. 

 5. /7. 310.— Mexico, Alaman (v. sp. in herb. DC), Ghieslrecld (v. sp. in herb. Mus. Par.), Mackenzie 

 (v^ sp. m herb. HooL). Ahhough large for the genus, the heads are smaller than those of Gutierrezia 

 (Odoatocarpha, DC. !) Gayana, in which they are also solitary ; and the pappus is nearly the same as 

 that of a. Tpvnn. _ in Xanthocoma humilis, which Dr. Halstead gathered in Mexico, the achenia, or at 



least the ovaries, are short and compressed, glabrous, and the appendages of the style are short and ob 

 tuse. 1 he stems are somewhat floccose-wooUy when young. 



• 



KEEELIA, Gray, Fl Lindk 2. p. 221, non LC! 



^ Cap.tulam plur.florum radiatum ; ligulls 5- 15 uniserialibus fcBmineis ; fl. disci hermaphroditis aut abor- 

 tu mascuhs, 5-dcntatis. lavolucrum turbinatum, imbricatum, pauciseriale ; squamis oblongis cuspidato- 

 mucronatis nit.d,s membranaceis. marginlbus scariosis, extimis brevibus. Eeceptaculum planum nudum. 

 Styh rami fl. disci breves appendice aut brevissima obtusa aut gracili lanceolata superati. Achenia ob- 

 ovata, pl. m. compressa, d.sci vel centralia inania gracilia, disco epigyno parvo, pappo minimo coroniformi 



superata. — Herbas Texanse, aanuee vel perennes ? canlihuc! a,">n;i;k., tr • i- r- u • 



^^^.x^ 1 ,. ,, - , ' .,., pcicmies,. cauuous gracilibus effuse ramosis ; fohis alternis 



spatlmlatis oblongisve subsessilibus mtefrerrimis • canitiiH<? mrvnKc r.cA w v. - i • i .• 

 liaulis albis vel r:^r„l.;« ° ' ^ ^ "^^'' pedunculatis solitarns vel paniculatis ; 



nac^is infil?, r'!^ '' ^°""^' h^^^^^^^^^-P^^^^^^ns ; caule humili e basi diffuse ramoso ; foliis membra- 



clavrf^S^^ *^f^*^^^^-' appendicibus styli brevibus obtu.sissimis ; acheniis 



clavato fusifonmbus hirtelhs 7 - D-nervus leviter (exterioribus pr^^ertim) compressis coronula plrva inte- 



