TROPICAL AMKHU'AN EUPATOKIKAE. 251 



A species in many characters near E. pi/cnocfplinliiiii, hut (luite 

 different in its inflorescence. 



E. (§ Subimbricata) Maxonii, spec, nov., frutescens inolliter 

 lignescens 3-4 m. altiun; caule tereti fistuloso fulvide puherulo 

 ramoso; ramis oppositis modice patentibus; foliis oppositis ovato- 

 suborbicularibus tenuiter membranaceis utrinque viridibus apice brc\i- 

 ter acuminatis basi subtruncatis vel brevissinie acunn'natis siinplice 

 vel plus minusve duplice dentatis lateraliter saepe uni-lobatis vel 

 -angulatis basi pinnatinerviis supra basin trinervatis delicatule reti- 

 culatis 10-12 cm. longis 8-10 cm. latis; petiolis 3-5 cm. longis 

 sordide puberulis supra planis ye\ leviter canaliculatis ; capitulis ca. 

 26-floris sublaxe corymboso-paniculatis graciliter pedicellatis 1 cm. 

 longis; involucri anguste campanulati squamis ca. 23 valde inae- 

 qualibus dorsaliter minutissime puberulis 3-G-nerviis, exterioribus 

 ovato-lanceolatis acutis brevioribus (extimis 1-3 lineari-lanceolatis 

 subpatentibus), mediis lanceolatis, interioribus anguste oblongo- 

 lanceolatis acutis, intimis linearibus subacutis apicem versus ciliolatis; 

 coroUis graciliter tubulosis 7 mm. longis apicem versus patenter 

 hispidulis aliter glabris verisimiliter albis, faucibus brevissimis ob- 

 scuris, limbi dentibus 5 breviter deltoideis patentibus vel recurvatis; 

 antheris subliberis apice longiuscule appendiculatis basi subsagittatis; 

 achaeniis glabris nigris lucidis 5-costulato-angulatis 1.5 mm. longis 

 basi callosis et concavis; pappi setis ca. 40 laete albis delicatule 

 capillaribus plerisque subaequalibus (2 vel 3 brevioribus) minute 

 scabratis basi in cupulam connatis; styli ramis longissimis filiformi- 

 bus. — Panama: in humid forests in the vicinity of El Boquete, 

 Chiriqui, alt. 1000-1300 m., 2-8 March, 1911, William R. Maxon, 

 no. 4942 (type U. S., dupl. Gr.). 



From E. conspicuum Kunth & Bouche, a species somewhat similar 

 in its long-petioled, thin, and broadly ovate leaves, E. Maxonii differs 

 much in its involucre which is clearly that of § Subimbricata. From 

 E. hylobium Robinson it differs in the more spreading dentation of the 

 leaves, its longer corollas (7 mm. instead of 4.5 mm.), and considerably 

 more numerous florets and pappus-bristles, as well as its slightly 

 firmer and more acute scales. In E. oresbium Robinson, another 

 species of somewhat similar foliage and habit, the heads are smaller 

 and less numerously flowered and the corolla has a more enlarged 

 throat. E. perornatum Klatt of Vera Cruz, likewise somewhat similar 

 in habit, has the receptacle hairy and the achenes somewhat hispid, 

 while E. prionophjUum Robinson of Costa Rica, which is arboreous, 

 has more ovate, more gradually acuminate leaves, and glabrous 

 corollas about 4.5 mm. long. 



