. 
TROPICAL AMERICAN COMPOSITAE. 7 
saepius siitenstibacd curvatis stbanninets firmiusculis; capitulis 10-12- 
floris; involucri squamis ca. 13 ovato-oblongis obtusis ciliatis dorso 
laxe pubescentibus; corollis albidis 4 mm. longis, tubo proprio 1 mm. 
longo glanduloso-atomifero, faucibus paullo ampliatis 3 mm. longis 
glabris; pappi setis ca. 17, sordide albis barbellatis; achaeniis (im- 
maturis) ca. 2 mm. longis in angulis cum glandulis globosis minutis 
sessilibus instructis— CoLomBia: at Verjén, Sept., 1917, Bro. Ariste- 
Joseph, no. 150A (Gr.). 
The leaves of this species vary from crenvlate or serrulate to essen- 
tially entire and at different stages of development their reticulation, 
as seen from above, is of strikingly different size of mesh. These 
differences, however, are very clearly those of age or of individual 
development and have no classificatory worth. E. Aristei is clearly 
related to the Venezuelan EL. Jahnii Robinson, Proc. Am. Acad. liv. 
248 (1918), but that species has leaves of a more elliptic-oblong 
contour, scarcely more narrowed to the apex than to the base, their 
teeth somewhat larger, more salient, and mucronate, the petioles 
shorter, and the heads only about 6-flowered 
E. (§ Subimbricata) Bridgesii, spec. nov., ut videtur herbaceum 
vel 
— ignota) gracile erectum 3 dm ultra altum; caule tereti 
mm. diametro stramineeovitidi: piisited puberulo (pilis brevis- 
simis incurvatis); internodiis usque ad 6 em. longis; foliis sub- 
oppositis vel superne alternis rhombeo- vel lanceolato-ovatis utroque 
attenuatis paullo supra basin 3-5-nervatis 5 em. longis 1.5-1.8 em. 
latis tenuiter membranaceis pallide viridibus supra praesertim ad 
marginem scabro-puberulis subtus vix pallidioribus in nervis et venis 
principibus albidis puberulis margine cum dentibus parvis mucro- 
natis paucissimis (saepe utroque 1-2 solis) instructis; petiolo supra 
canaliculato anguste marginato 4-7 mm. longo; corymbo com- 
posito planiusculo 2-2.5 dm. diametro, ramis et pedicellis (3-6 mm. 
longis) stramineo-viridibus puberulis; capitulis numerosis ca. 25-floris 
7 mm. altis 4 mm. diametro; involucri squamis ca. 22 valde inae- 
qualibus gradatis pallide viridibus plerisque 2-costulatis, extimis 
brevibus ovato-lanceolatis acuminatis dorso paullo adpresse puberulis 
apice squarroso-recurvatis, intermediis gradatim longioribus lanceolatis 
attenuatis subglabris, intimis lineari-oblongis acutis glabris; corollis 
roseis 4 mm. longis glabris sursum sensim ampliatis limbo extus paullo 
granulatis; achaenis atro-brunneis in costis pallidioribus sursum 
hispidulis: pappi setis ca. 27 vix 2.5 mm. longis barbellatis — Boutrvia: 
without locality, Bridges (K., phot. and fragm. Gr.). 
. CELTIDIFOLIUM Lam., var. HIRTELLUM Robinson, Proc. Am. Acad. 
