NATURAL SCIENCES *0F PHILADELPHIA. 05 



j.'ol . A. (Pyrbocoka) croceus, n. sp.* Subalpine, in the Middle Park, &c, 



west of the Rocky Mountain range. 258. A. (Pvrr» »ma) Fremontu. Pt/rro- 



i -folio&a % Gray in Jour. Bost. Nat. Hist. Soc, 5, 1843. Low mountains, 



lat. 39 D -. There is a Chilian A.foliosus; wherefore, in soppre big Pgrroc iia 



as a genus, the name of this most rare and well-marked specit iay very 

 properly commemorate the discoverer. g.V.j. A. (Ptkrocoma) Parkyi, Gray, 

 Enum. PI. Parry. 2G0. Chrysopsis villoma, Nutt., with the dwarf variety, 

 Cm kispida, 



261. Iva axillaris, Pursh; abroad-leaved form. 262. I. ciliata, "Willd. 

 26Sl EppgRQSYHB (Cyclachjexa) xanthiifolia, Gray. ^2 G -T.) F n a n s e r i a tomen- 

 tosa, Gray, PI. Fendl. 265. F. Hookeriana, Nutt. * fc *-"^" 



20 j. Lepachys column aris, Torr. & Gr. 2*17. Gaillardia arist \ta, Pursh. 

 2G>. 1Ielia.ntiiei.la uniflora, Torr. andGr. Tine specimens. The a«li»iiiaare 

 eiliate with very long hairs ; the awns are long, slender ami persistent*! 

 2iLfl A Heltanthus pcuii Nutt.? Parry's No. 50. 270. H. petiola Nutt. 

 211. (& 4-'> of Parry.) Heliombris mitltifloea, Nu tt* ; tne broader - leaved form« 



272. Helbnutm Hoopbsii, n. sp., a most striking species, seeds of which were 

 collected near Pike's Peak in the autumn of 1859, by Mr. Thomas iloopes, 

 from which plants were raised by Mr. Halliday Jackson, of Westcl eater, Pa.J 



273. Actixella grvxdiflora, Torr. and Gr. ; equally iiue specimen- - those of 

 Fast year. 274 . Actinella Richarpsoxii, Torr. and Gr. 27 "> . A. si > iA, Nutt. 

 var. (A, glabra, Nutt.) 276," 277- A. acaulis, Nutt., in different forms. 2j>. 

 Baiiia opj BiTiFOLiA, TorrTand ur. 279. Thbl pbrma (Cosmidipm) grac 

 Gray. 280 . T. filifolium, Gray. 2^1. Villa nova chkys anthem- , Gray. 



2. HYMENOPAPPIS TENUIFOLIDS, Pursh. 2b3. ClLENACTIS ACHILLE^KFoLI A, 



ook. Arn. ; a low form from the alpine region. 2^4. C. acuii sfolia, var. 



exterioribus panllo brcvioribus; f>liis parvulis. caulinis superiorilms gradatim mlnoribns (6 

 lin. lcmgis) acutioribus. fi. Hallt: involucri squamis plerisqae latioribua, extimi? oblongo-1 b- 

 aribns disc urn adaequantibua : foliis etiam caulinis mains spa-thulatis. sumn aribus capi- 



tulum adaequantibua, radicalibus bipollicaribus. lb I half an inch 1 ong ami wide. Lignlea ex- 

 serted, 3 or 4 Hoes long. Appends) f the style in the disk-flowers obloi lance te. Ovaries 



in Hall and liarb r's ] it sparsely 1 t with a few slender h g : Kb Dr. Lyall'a . abrons. 



* • Aplopappcs (Pyrbocoma) croceus >. nov.): caul ultrapedali parce folia monocepbalo 

 primum lanoso ; ibliis coriaceis ibria integerrimia haud eximie reticuiatis, radicalibus oblongo- 

 laueeol;. (cum i tiolo pedalibus;, caulinis lanceol s o b Ion gift ve basi mi-amp lexicanlibua; 

 capitulo nu'lo nmxiino: involucri hemisphaerici squamis ovalibus obti mis mat - iuterioribus 

 margiue auba ■ - rosis; ligul I ot ultra longe exsertis supra croceis: ovariis brevirscul 



glaberrimi dbido corollam disci ad uiante. Allied, to Pyrrocm m ta, Nutt., which, 



however, i- bably not distinct from Aplopappu. na, Hook.) cart/' . But the 



lean elesscoriae us and reticulated: the head naked, peduncled, and 1 1 ieve noddin invo- 

 lucre an inch in diameter; the lonjj; exaerted rays nearly an inch in length; th raries far 

 short . and the pappus white. But I have this only in flower, aril P. in fn 



f The fullow ;. apparently quite distinct, new spedes of this trenus, was eolb I by 



Dr. Parry* in Idle Park, near the font of lake's Peak. I have also received a sp n from Mr. 



Hall. It is (I bed by its small leaves and heads, thin and s<ari< chaff. awnh 



achenia cr « i hyaline squamellse, which are resolved into a villous fringe that equs the 



proper tu f the ci rolla in I ;th. 



Reliant; Farrti (sp. no : pedalis, H its; foliis triplinerviia lanceolate vel radicalibmi 



spathu caulinis Buperioribui uldinearibua l-2*p aribns : capitulis 2-3 ] alia brevi<*ime 



pedunc ptaculj paleia tenui-acariosfs apice trnncato barbulat ; ovarii u ex: i- 



• Tibu pius promise in tHrioribus snperne parce Till -ciliat exa istatis ; i ippi circ. 4 



lacis tenuis da in villain tnbura proprium corollas adequantem solatia. Involucre only 



half an inch long; disk half an inch in breadth; ligul 7 to 9 lines lone. 



J HEL8N1UM H sn i sp. nov.): caule valido totnentuloso - jqui-bipedali ollgoci ia!o; foliis 



glauco-palli - dis puncta ? mox glabratia subnervatia integerrimis >ns lanceo- 



1 -spa-thulatis in lam brevem alatnm angus ulinis oblongo-lanc i-< i tmpb xi- 



caulibns ; pednnculis su im Incrassatis; capitulis p lere maximis; involucri >- 



latia - u li aribus : n eptacnlo subgloboao; li<ruli 25 lineari-c iri aim 



disco aurati : pappi paleia bin »lato-8nbidatifi enerviifl corolla disci panllo brevioribus 



ac! lium si j villosum aequantibos. •• South Park and v f Pike'i i 1; I leaves 



to 1 ig, 1 ing Into a petiole-like base or flat and winged petiole; the dim nes 



md more dilated at the base ? uppermost 1 i to 2 inches long. -k in the 

 wild apeci i an inch in diam -r. and the numerous < injre-yellow rays an inch long. Pale»« 

 fthe pay pas tapering to a larp point >ut not awned. This is one of tb hich go to 



fill the interval ,\\ een Hec and Ad Ua, but is clearly of the former genus. 



1868.] 



