>, 
ROBINSON.— ALOMIA, AGERATUM, AND. OXYLOBUS. 449 
glabris viridibus subtus vix pallidioribus minute glanduloso-punctatis 
7-10 em. longis 2.5-3.8 cm. latis supra basin 3-nerviis; corymbis in 
ramis terminalibus densis pauci(5-8)-capitulatis longiuscule peduncu- 
latis; bracteolis parce pubescentibus linearibus; pedicellis 3-5 mm. lon- 
gis rectis; capitulis pro genere majusculis 7-9 mm. diametro; invol- 
ucri turbinato-campanulati squamis ovati- vel obovati-oblongis planis 
ecostatis acutis erosis pallidis subaequalibus (extimis paucis multo 
angustioribus exceptis); receptaculo undique paleifero; paleis corollas 
subaequantibus apice subulatis pallidis induratis; corollis 2.2 mm. 
longis glabris limbum versus caeruleo-purpureis, tubo proprio faucibus 
paullo ampliatis longiore; achaeniis nigris glabris 5-angularibus saepe 
arcuatis basi callosis apice cum annulo parvo albido subintegro coro- 
natis.— GUATEMALA: prope Nenton, alt. 900-1225 m., 13 Dec. 1895, 
E. W. Nelson, n. 3528 (hb. Gray., sub nomine Isocarpha echioides 
distributa). 
13. A. isocarphoides (DC.), comb. nov., suffruticosa; caule tereti 
hispido-pubescenti usque ‘ad inflorescentiam terminalem compositam 
foliato; foliis oppositis 3-nerviis lanceolatis integriusculis vel crenato- 
dentatis subsessilibus supra scabridis subtus velutino-villosis acumina- 
tis basi cuneato-angustatis; inflorescentia oppositi-ramea; capitulis 
ca. 25-floris in corymbis densis dispositis.— Coelestina isocarphoides 
DC. Prod. v. 107 (1836), incl. 8 dentata. Ageratum isocarphoides 
(DC.) Hemsl. Biol. Cent.-Am. Bot. ii. 82 (1881). Carelia isocar- 
Phodes [DC.] Ktze. Rev. Gen. i. 325 (1891).— Mexico, sine loci 
indicio accuratiori, Haenke (hb. DC., phot. in hb. Gray.); in cultis 
prope Orizabam, Botteri & Sumicrast, n. 524 (hb. Gray., immatura et 
dubitativa). Species minus cognita, an cum sequenti conjungenda? 
14. A. echioides (Less.), comb. nov., herbacea perennis; radice 
fibrosa; caulibus solitariis vel paucis virgatis suberectis simplicibus 
vel rariter ramosis saepius ad mediam partem solum foliosis hirsuto- 
villosis; foliis lanceolati-oblongis 3-costatis serrato-dentatis vel saepius 
integriusculis basi cuneatis apice gradatim angustatis sed vix vero 
_ &cutis 2.5-9 em. longis 8-18 mm. latis utrinque villoso-hirsutis subtus 
paullo pallidioribus glanduloso-punctatis; corymbis terminalibus 
Saepius densis rarius trichotomis et laxioribus; bracteis parvis lineari- 
bus; capitulis 7 mm. diametro ca. 50-floris; involucri campanulati 
Squamis lanceolato-oblongis viridibus vel purpurascentibus ciliolatis 
Saeplus 2-costatis apicem versus subinduratis pallidioribus; recep- 
taculo Valde elevato subcylindrato-conico undique paleifero; corollis 
subcylindricis sparse pubescentibus 3 mm. longis caeruleo-purpureis, 
| tubo proprio fauces vix ampliatas fere aequante; achaeniis nigris 
