f 



V. 



PLANT^ WRIGHTIAN^. 



99 



The form with rather large heads. The ripe achenia are turgid, with two sharr 



w margins, transversely rugose, the c 

 phala, DC. has smooth achenia, it is pr 



thick. If G. micro- 

 }S. Othcrwisc it is to 



No. 297 what the small-flowered G. squarrosa is to No. 296. — G. inuloidcs /9. Torr. 

 §• G rai/ , helongs to G. integrifolia. G. stricta, DC. ! Prodr. 7. j). 278, is apparently 

 a slender and small form of G. integrifolia, /3. virgata, Torr. 8f Graj/. G. discoidea, 

 HookSf Arn. (non Nutt.) is, I believe, G. anomala, DC, so that Nuttairsnamc may 



be retained for the Oregon species. 



298. Chrysopsis canescens, Torr. §• Grat/, Fl. 2. p. 256. Valley of the San 



Pedro and of the Limpia ; July. 



299. C. foliosa, Nutt. in Trans. Amer. Phil. Soc. ; Torr. §• Gray, Fl. 2. p. 256 ; 

 var. minus canescens ; foliis parvulis saepius setoso-ciliatis. — Mountains east of 



El Paso ; Sept. 



LAPHAMIA, Nov. Gen. 



/ 



Capitulum pluri - multiflorum, nunc homogamum discoideum, nunc radiat' 

 mochromum ; ligulis paucis, ovalibus oblongisve, 2 - 3-dentatis, discum haud 



antibus. Involucrum uni - biseriale ; squamis 



vcl 



membranaceis, unincrviis, carinatis, apice ciliatis. Eeceptaculum planum, scrobi- 

 culatum, nudum. Flores disci hermapliroditi. Corolla^ (extus viscoso-glandulosff) 

 tubulosjE, fauce pl. m. ampliata, dentibus 5 ovatis patentibus. Anthcrac basi sagit- 

 tatce vel bidentatce. Styli rami fl. disci angusti sed complanati, in appendicem subu- 

 latam hispidam producti. Achenia conformia, lineari-oblonga, compressa, pra^ser- 

 tim ad nervos marginales hirtella. Pappus aut plane nullus, aut unisetosus, aut 

 (inspecie forte aliena) plurisetosus, setis hirtellis. - Herbae vel potius suffruhces 

 rupicote, humiles vel nana^, puberul^; caudice crasso lignoso caules plures lohosos 

 proferente ; foliis alternis et oppositis, ovatis, cordatis, oblongisve s^pius dentatis 

 petiolatis, atomis tesinosis conspersis yel minute punctatis ; capituhs sohtanis vei 

 corymbosis terminalibus ; floribus flavis. 



I dedicate this genus to I. A. Lapham, Esq., of Milwaukee Wisconsin 



of 



g 



.. a ...a.u.u. of the plants of that State, and a zealous explorer of its botany, 

 In order to their proper arrangement, I give the five known species m the text, al- 

 though the two with unisetose pappus have not been received from Mr. ^^ nght 

 The position of the genus is uncertain, " neither the form of the s yle nor thc hab, 

 being very decidedly that of any of the great tribes of Composita. as Mr Bcnthan 

 renwks of his genus Perityle ; to which genus this is manifestly al led hio £. 



species 



It has a' similar habit, and exactly the same kind of 



involucre 



but ihe pappus wants the crcvu of _sq«amell. and in t.. spec.es 



there is no pappus at all. I think that both genera belong rather to the A 

 notwithstanding the tendency to have opposite leaves. _ The fi rst section m.„ 



I 



k 



taken for a separate genus 



1. } Pappothr 



Invoiucrum 5 - 8-phyIlum, 12 - 15-florum, f^^:"^^ 



.qu i: Ligul. null.. CoroII. disci fauce '^-^^^^^^f^'-^^^ 



.„L T.-.I.: %.^^... . «cPtk nirciter 20 coiiformibus, sed mcequilongis, capillai 



tubo brevi. Papp 



■> « 



