188 PROCEEDINGS OF THE AMERICAN ACADEMY 



(and is mentioned in DC. Prodr. in a note under that species) ; 

 but it is very different. Flowering sterns rather simple and rigid, 

 bearing fascicles of leaves in most of the axils. Involucre two lines 

 long ; the larger of the contained bracts and bractlets lanceolate 

 and scarious ; the others filiform. Pedicels of the flower apparently 

 compressed, little exceeding a line in length, and about the length of 

 the perigonium. 



* * Involucra alaria pleraque sessilia, minima, fere 5-partita, pau- 

 ciflora. 



77. E. divaricatum, Hook. Kew Jour. Bot. 5, p. 265 ; Benth. 

 in DC. 1. c. Annuum, demissum, a basi divaricato-ramosissimum, 

 minute pubescens ; foliis radicalibus ovatis spathulatisque longius pe- 

 tiolatis, caulinis secundariis intra primaria parva stipulaaformia subu- 

 lato-linearia geminis conformibus superne gradatim minoribus ; peri- 

 gonii albidi segmentis oblongis subasqualibus. — Utah, on saline clayey 

 soils, within the high calcareous hills of the Upper Colorado, Geyer. 

 Less than a span high. Lamina of the leaf from six to three, or the 

 ultimate ones only one or two lines long. Flowers little over half a 

 line in length. All the developed leaves on the stem and branches 

 appear to spring from within the stipule-like true cauline ones. 



§ 14. Foliosa, Benth. Flos basi brevissima acutata vel obtusa 

 perigonii 5-partiti cum pedicello exserto articulatus. Ovarium 

 glabrum. Involucra 4-8-fida vel partita, nunc in pedicellis 

 paniculata vel subraceraosa modo Pedunculatorum, nunc in dicho- 

 tomiis sessilia. Caules fbliosi : folia caulina rite evoluta, opposita 

 seu verticillata (ima tantum alterna) et in axillis fasciculata. 

 Embryo prcecedentium. Herba3 annuse. 



* Salsuginosa : involucri phylla fere discreta inaequalia. Perigo- 

 nium fructiferum achenio acutissime triquetro arete conforme. 



78. E. salsuginosum, Hook. Kew Jour. Bot. 5, p. 264. Glabrum, 

 diffuso-ramosissimum, usque ad apicem foliosum ; foliis subcarnosis, 

 imis spathulatis oblongisve, superioribus linearibus ; involucris alaribus 

 sessilibus paucisve ramulos seu pedunculos filiformes terminantibus 

 paucifloris e bracteis linearibus basi subcoalitis vel discretis ; floribus 

 subsessilibus ; perigonio subherbaceo extus minute hirtello, segmentis 

 oblongis subtequalibus apice tantum scariosis. — Utah, in the Rocky 

 Mountains near the sources of the Colorado, on saline clayey soils, 



