HO PROCEEDINGS OF THE AMERICAN ACADEMY 



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

 subtended by palete, the outer ones similar to the involucral scales, 

 the inner shorter and smaller. 



'^ Senecio Palmeri. SufFruticosus, tomento implexo candidissimus, 

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

 integerrimis in petiolum sat gracile attenuatis ; peduncnlo elongato 

 nudo corymboso-7-14-cephalo; involucro ecalyculato incano, squamis 

 20—30 linearibus; ligulis 12-18 ovalibus aui-eis ; 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 Rothrockii. Gracilis ; caule ultrapedali 6 ^adice 

 fusifoi'mi pereimi ? simplici vel inferne ramoso folioso mono-oligo- 

 cephalo ; foliis linearibus integerriniis vel basim versus parce pinnati- 

 fldo-laciniatis dentatisve ; peduncnlo • gracili fere nudo ; . capitulo 

 angusto circiter 20-floro ; involucri squamis exterioribuspaucis subuhitis 

 adpressis ; acheniis rugulosis sursum scabris ; pappo maturo sordide 

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

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



PALMERELLA, Nov. Gen. Loheliacearum. 



Calycis tubus turbinatus, ovario biloculari multiovulato adnatus ; 

 limbus 5-partitus, lol)is angustis a^qualibus. Corollie tubus lineari- 

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

 nunquam dilatata ; limbo patente valde ina^quali, lobis 2 minoiil)us 

 spathulato-linearibus, 3 niajoribus oblongis basi connatis. Ulamenta 

 corollas tubo longissime adnata, dein monadelpha et uno latere sa=i)ius 

 alterius adnata : antherte oblongas, 2 setis paucis rigidis intcqualibus 

 vertice penicillatae, 3 paullo majores nudae. Cast. Lobelice. Fructus 

 maturus baud visus. 



^ P. DF,BiLis. Ilerba glaberrima, gracilis, ultrapedalis, ramosa; 

 foliis alternis tenuibus lineari-lanceolatis integerriniis eglandulosis 

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

 laxi pauci-pluriflori referentibus ; corolla3 tubo albido f -pollicari, lobis 

 laete cyaneis, 2 ininoribus, majoi-ibus lineas 3-4 longis. — Great 

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

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



