290 PROCEEDINGS OF THE AMERICAN ACADEMY 



profundo, intus bilocellato polyspermo. A. leucophyllus ? Hook. Lond. 

 Jour. Bot. 6. p. 211, non Torr. & Gray, Fl. — Ivooskooskee River, 

 coll. Geyer. 



Brickellia atractyloides, n. sp. Fruticosa, ramosissima,. vix 

 pedalis; ramulis foliosis puberulis monocephalis ; foliis rigidissimis sub- 

 alternis subsessilibus ovato-lanceolatis spinuloso-acuminatis pauciden- 

 tatisque 3-5-nervibus, costis cum venis adscendentibus anastomosantibus 

 prominulis, paginis conformibus scabrido-atomiferis ; pedunculo 1^2- 

 bracteolato capitulum multiflorum (semipollicar'e) bis terve excedente ; 

 involucii campanulati squamis pauciseriatis, exterioribus ovato- inti- 

 mis lineari-lanceolatis, omnibus subito acuminatis ; acheniis secus costas 

 hirtellis; pappi setis circiter 20 tenuiter saltern -inferne barbellulatis. 

 — Utah, near the Rio Colorado, 1870, Dr. E. Palmer. — Leaves less 

 than an inch long, coriaceous and rigid, tapering into a spinulose point 

 and beset with a few rigid spinulose teeth. This species would natu- 

 rally be associated with B. spinulosa, of Northern Mexico, but it has 

 forty or more flowers in the head and a minutely barbellulate or above 

 merely scabrous pappus. 



Linosyris squamata, n. sp. Fruticosa, glabrata, ramosissima ; 

 ramulis scopariis viridibus substriatis ; foliis squamiformibus brevis- 

 simis (I'm. l-2 1ongis) lato-subulatis triangularibusque subadnatis ; 

 capitulis subracemosis vel solftariis ramulos terminantibus plurifloris ; 

 involucri squamis oblongis obtusissimis margine subscariosis laxis pauci- 

 seriatis et in bracteolas minores decrescentibus ; corollas limbo fere 

 5-partito tubo dirnidio breviore, lobis patentissimis lanceolatis (nervo 

 centrali percursis ! ) ; antheris basi subsagittatis ; styli ramis appendice 

 brevissimo obtuso superatis ; achenio glaberrimo laevi subclavato pappo 

 molli (corolla; tubum adrequante) cTimidio breviore. 



Var. Breweri, gracilior, parcius squamata ; capitulis paucioribus 

 minus bracteolatis ; pappo ut videtur fusco. — Low hills of the Sierra 

 Santa Monica, Los Angeles Co., California, Professor Brewer. I had 

 mistaken this for the male of a Sergiloid Baccharis. 



Var. Palmeri, crebrius ramosa ; squamis loco foliorum approxima- 

 tis sub capitulis imbricatis involucrum longe bracteolantibus ; pappo 

 albo. — Desert of the Colorado, Arizona, 1870. Dr. E. Palmer. — 

 The achenia, which are perfectly fertile, resemble .those of a Baccharis. 

 The mid-nerve to the lobes of the corolla and the somewhat sagittate 

 base of the anthers are as in Tetradymia ; the style is of the Aster- 

 oideous type. Heads four or five lines long. In Dr. Palmer's fine 



