248 ROBINSON. 



6-7 cm. longis 2.4-3 cm. latis basi apiceque exceptis crenato-serratis 

 (dentibus 4-7 mm. latis ^^x usque ad 1 mm. altis) supra basin 3-nerviis 

 supra minute hirtellis subtus in nervis ^•enisque molliter pubescentibus 

 crebre aureo-punctatis ; corymbis terminalibus densiusculis convexis 

 multicapitulatis ca. 1 dm. diametro; capitulis ca. 10-floris 9.5 mm. 

 longis 3-4 mm. crassis sessilibus ad apices ramulorum ternis et qua- 

 ternis fascieulatis; involucri gracile cylindrici 7 mm. aiti squamis ca. 

 18 ca. 4-5-seriatim imbricatis plerisque anguste oblongis basi laete 

 albis glabris apicem versus breviter subherbaceis viridibus vel (in- 

 timis) pulchriter roseo-purpureis, apice subherbaceo squamarum 

 intermediurum plus minusve squarroso subpatente acutiusculo tomen- 

 tello; corollis ut videtur roseis 4.5 mm. longis, tubo proprio 1 mm. 

 longo, faucibus vix distinctis sensim sursum ampliatis extus 5-nerviis 

 inter nervos cum glandulis stipitatis paucis munitis ; achaeniis gracili- 

 bus 3.3 mm. longis in costis et in faciebus breviter hispidulis; nectario 

 conspicuo depresso; pappi setis ca. 28 capillaribus laete albis 4 mm. 

 longis. — Colombia: open hillside, edge of forest, Las Nubes near 

 Santa Marta, alt. 1370 m., December, H. H. Smith, no. 615 (type 

 Gr.). _ 



A highly attractive species distributed under the name of Eupa- 

 torium pulchellum HBK., a Mexican plant with alternate shorter- 

 petioled leaves and obtuse unappendaged involucral scales. The 

 name iridolepis alludes to the parti-colored involucral scales which 

 under low magnification have unusual beauty of form and color. 



E. (§ Eximbricata) Jahnii, spec, nov., fruticosum; caulibus (vel 

 ramis) teretibus 5 mm, diametro purpureo-brunneis juventate visci- 

 dulis molliter villosis maturitate glabratis plus minusve vernicosis; 

 internodiis ca. 3 cm. longis; foliis oppositis breviter petiolatis oblongis 

 coriaceis acutis vel saltim acutiusculis margine (basi cuncata excepta) 

 serrato-dentatis (dentibus 0.5-0.8 mm. altis 4-5 mm. latis) penni- 

 veniis (venis ca. 10-jugis) supra subglabris (costa et venis juventate 

 paullo villoso-lanulatis) subtus in costa venisque sordido- vel fulvo- 

 villosis vel -lanatis 6-9.5 cm. longis 2.3-4 cm. latis; petiolo ca. 8 mm. 

 longo supra sulcato basi paullo dilatato; corymbo terminali sessili 

 composito trichotomo multicapitulato planiusculo vel leviter convexo 

 8-10 cm. diametro; capitulis 6-fioris ca. 11 mm. altis 4 mm. diametro; 

 involucri anguste campanulati squamis ca. 11 lanceolatis inaequalibus 

 laxe (ca. 2-seriatim) imbricatis viscidis ciliatis; corollis 6 mm. longis 

 glabris; tubo proprio ca. 1.8 mm. longo; faucibus ca. 4.2 mm. longis 

 gradatim leviterque sursum dilatatis; dentibus limbi 5 lanccolato- 

 deltoideis recurvatis; antheris apice cum appendice longiuscula 



