10 ROBINSON. 



sum, indumento brunneo \e\ fuscescenti patente glandular! longiusculo; 

 caule (basi ignota) tereti 6 mm. crasso folioso medulloso; foliis oppo- 

 sitis petiolatis ovatis cordatis (sinu angusto) acutiusculis ca. 1 dm. 

 longis 4-7 cm. latis supra atroviridibus conspicuiter bullato-rugosis 

 puberulis subtus reticulatis sordido-tomentellis margine subregulariter 

 dentatis, dentibus 1.5 mm. altis 3-4 mm. latis; petiole 2^ cm. longo 

 dense piloso, pilis articulatis; corymbis terminalibus breviter peduncu- 

 latis densis 6-7 cm. diametro planiusculis vel modice convexis; capit- 

 ulis ca. 22-floris 1.5 cm. longis 6 mm. crassis; involucri campanulato- 

 subcylindrici squamis subtriseriatis ca. 21 ovatis acutis stramineo- 

 viridibus costulato-striatulis dorso pubentibus, receptaculo piano; 

 corollis graciliter tubulosis 5 mm. longis glabris paullulo sursum 

 ampliatis; dentibus limbi 5 patentibus anguste deltoideis; achaeniis 

 graciliter prismaticis 4 mm. longis; pappi setis ca. 45 stramineo- 

 albidis firmiusculo-capillaribus vix scabratis. — Peru: Province of 

 Chachapoyas, Mathcics (type, Gr.). The specimen at the Gray 

 Herbarium bears no number, but an exact duplicate in the Kew Her- 

 barium is marked "Mathews 1836. 91. H." 



Though unusual to name plants for persons in no way connected 

 with their discovery or investigation, the writer desires to perpetuate 

 in the present interesting and attractive Peruvian species the memory 

 of the extraordinary man, Pedro de la Gasca (born 1496, died 1569), 

 styled by Charles V. the "President of the Royal Audience" and by 

 the people of Peru "Father and Deliverer," concerning whom it may 

 be said that he was the first Caucasian to reach Peru of whom the race 

 has any reason to be proud. 



E. (§ Eximbricata) Gilbertii, spec, ndv., perenne vel fruticosum 

 gracile glabriuscuJum; caule pallido-stramineo tereti ca. 2 mm. 

 crasso flexuoso maturitate glaberrimo juventate sparse obscureque 

 villosulo; foliis oppositis ovatis acutis vel leviter acuminatis mucronu- 

 lato-serratis vel -crenatis (dentibus ca. 0.6 mm. altis inter se ca. 5 mm. 

 distantibus) tenuibus membranaceis supra viridibus in nervis puberulis 

 subtus distincte pallidioribus glabris 6-7 cm. longis 3-3.5 cm. latis 

 basi rotundatis vel subcordatis integris; petiolo gracili ca. 1.7 cm. 

 longo supra canaliculate puberulo; corymbis compositis planiusculis 

 sublaxis obscure villosulis basi foliaceo-bracteatis; pedicellis fili- 

 formibus 4-10 mm. longis bracteolatis ; capitulis parvis vix 5 mm. 

 altis et diametro ca. 26-floris; involucri campanulati squamis ca. 17 

 subaequalibus oblongo-lanceolatis stramineo-viridibus saepius 2- 

 costulatis et 3-veniis margine tenuibus subscariosis apice acutiusculis 

 ciliatis dorso laxe pubescentibus (pilis tenuissimis fuscis non-glandulif- 



