HO PROCEEDINGS OF THE AMERICAN ACADEMY 



Heads a line and a half in diameter : flowers all perfect ; most of them 

 subtended by palea?, the outer ones similar to the involucral scales, 

 the inner shorter and smaller. 



Senecio Palmeui. Suffruticosus, tomento implexo candidissimiis, 

 ramosissimus ; foliis in ramis floridis confertis oblougo-spathulatis sub- 

 integerrimis in petiolum sat gracile attenuatis ; pedunculo elongato 

 undo corymboso-7— 14-cephalo; involucro ecalyculato incano, squamis 

 20-30 linearibus; ligulis 12-18 ovalibus aureis; acheniis sericeo-inca- 

 nis. — Abundant through the northern half of the Guadalupe Island, 

 Lower California. One of the most conspicuous plants, about a yard 

 high ; the foliage strikingly white, and the flowers bright yellow. 

 Heads fully half an inch high, many-flowered ; rays 4 lines long. 



Pyrrhopappus RoTHROCKri. Gracilis ; caule ultrapedali e radice 

 fusiformi perenni? simplici vel inferne ramoso folioso mono-oligo- 

 ceplialo ; foliis linearibus integerrimis vel basim versus parce pinnati- 

 fido-laciniatis dentatisve ; pedunculo gracili fere nudo ; capitulo 

 angusto circiter 20-floro ; involucri squamis ex terioribuspaucis sububitis 

 adpressis ; acheniis rugulosis sursuni scabris ; pap{)0 maturo sordide 

 albo ! — Fisch's Ranch in Southern Arizona, at 5000 feet altitude, 

 J. T. Rothrock, in Wheeler's Exploration, 1874. 



PALMERELLA, Nov. Gen. Lohellacearum. 



Calycis tubus turbinatus, ovario biloculari multiovulato adnatus ; 

 limbns 5-partitus, lobis angustis Kqualibns. Corollaj tubus liiicari- 

 elongatus (intiis pubentissimus), omnino saltern superne integer; fauce 

 nun(iiiam dilatata ; limbo patente valde inivquali, lobis 2 minoiihus 

 spathulato-linearibus, 3 majoribus oblongis basi connatis. Filamenta 

 corolla} tubo longissime adnata, dein monadelpha et uno latere saepius 

 alterius adnata : anthenc oblong;e, 2 setis paucis rigidis ino?qualibus 

 vertice penicillata?, 3 paullo majores nudie. Cajt. Lobellce. Fructus 

 maturus liaud visus. 



P. DF.r.iLis. Herba glaberrima, gracilis, ultrapedalis, ramosa ; 

 foliis alteruis tenuibus lineari-lanceolatis integerrimis eglandulosis 

 sessilibus 2-3-pollicaribus, floralibus sensim diniinutis bracteis racemi 

 laxi pauci-])hniflori referentibus ; corolhe tubo albido J-pollicari. lobis 

 l;ete cyaneis, 2 niinoribus, majoribus lineas 3-4 longis. — Great 

 Caiion of the Tantillas Mountains, near the northern borders of Lower 

 California, Dr. Edward Palmer, to whom this genus is dedicated in 



