OF ARTS AND SCIENCES : JANUARY 26, 1870. 175 



or less spreading or recurved teeth of which (sometimes as long as 

 the tube itself, but variable) are peculiar. 



46. E. dichotomum, Dougl. 1. c. Prrecedenti subsimilis ; ramis e 

 caudice ca?spitoso-multicipiti brevibus crebre foliatis ; foliis oblongis in 

 petiolum attenuatis ; pedunculis strictis scapiformibus rarius foliatis 

 (subpedalibus) ; bracteis appressis involucro breviuscule obtuseque 

 subasqualiter 3-5-dentato brevioribus; perigonii segmentis exterioribus 

 obovato-ovalibus. — Forma humilis, E. alburn, Nutt. PI. Gamb. Forma 

 paniculis magis virgatis, E. strictum, var. laehnostegia, Benth. in DC. 

 Interior of Oregon, and Utah, Douglas, Nuttall, Fremont. 



-•— -i— Perigonium basi acutum, segmentis conformibus. 



++ Scaposa, stricta. 



47. E. strictum, Benth. Eriog. excl. /3. Basi cagspitoso-ramosis- 

 simum ; foliis confertis spathulatis seu obovato-oblongis in petiolum 

 longe angnstatis subtus albo-lanatis ; scapis gracillimis (pedalibus) glabris 

 vel mox glabratisdi-trichotome ramosis; bracteis parvis subulatis adpres- 

 sis; involucris (lineam longis) glabratis campanulatis equaliter 5-denta- 

 tis ; perigonii segmentis ovalibus oblongisve ; ovario glaberrimo. — Blue 

 Mountains of Oregon, Douglas only. We find no specimen from 

 Fremont, except of the var. laehnostegia, which clearly belongs to the 

 foregoing species. This has similar dichotomous inflorescence, but 

 much more slender, and involucres and flowers only half as large. 



48. E. RACEMOSUJr, Nutt. PI. Gamb. Floccoso-lanatum ; foliis e 

 caudice subterraneo longe petiolatis ovatis oblongisve nunc subcordatis 

 subtus albo-lanatis ; scapo valido (1 - 2-pedali) nudo rariusve ad nodos 

 inferiores folioso-bracteatis ; involucris tubuloso-campanulatis obtuse 5- 

 dentatis floribundis secus ramos subsimplices paucos rigidos stricte 

 spicatis appressis ; perigonii majusculi (lin. 2 longi) rosei seu albi 

 segmentis obovatis ; ovario glaberrimo vel superne scabrido. E. 

 orthocladon, Torr. in Sitgreaves Rep. p. 167, t. 8, & DC. 1. c. E. 

 obtusum, Benth. in DC. 1. c, forma foliis subrotundis. — N. New 

 Mexico and Utah, Fendler, Fremont, Gambell, Remy, Simpson, 

 Woodhouse, Bigelow, Newberry, Watson. Leaves 1 - 2 J inches long, 

 the petioles mostly still longer. Scape rigid, usually only once or twice 

 forked, sometimes more paniculate ; the branches erect and strict, when 

 few elongated ; the numerous involucres approximate and, with their 

 numerous flowers, forming a virgate spike rather than a raceme. Coty- 

 ledons orbicular, very excentric, rather shorter than the incurved radicle. 



