448 PROCEEDINGS OF THE AMERICAN ACADEMY. 



10. A. microcephala (Hemsl.),comb. nov.jherbaperennis; ramis 

 virgatis teretibus glabris; foliis oppositis late lanceolatis vel ovato- 

 lanceolatis serratis 3-nerviis 5-14 cm. longis 2-4 cm. latis firmiusculis 

 apice basique acuminatis supra viridibus scabridis \e\ laevibus subtus 

 pallidioribus cum glandulis minutis flavis densissime punctatis omnino 

 epilosis; corymbis terminalibus multicapitulatis densis convexis; 

 capitulis ca. 6 mm. diametro; involucri campanulati yiridis squamis 

 lanceolatis attenuatis saepissime 2-costatis glabriusculis vel parce 

 glanduloso-atomiferis; paleis apice indurato-subulatis glabris; corollis 

 glanduloso-atomiferis, tubo proprio fauces subaequante; achaeniis 

 glabris acute 5-angulatis. — Agcratum viicroccphalum Hemsl. Biol. 

 Cent.-Am. Bot. ii. 82, t. 43, ff. 1-5 (1881). Carelia microcepkala 

 (Hemsl.) Ktze. Rev. Gen. i. 325 (1891). — Mexico: Oaxaca in agris et 

 silvis, alt. 2135 m., Galcotti, n. 2098 (hb. Kew., phot, in lib. Gray.); 

 prope Choapam, alt. 1170-1380 m., E. W. Nelson, n. 858 (hb. U. S. 

 Nat. Mus., fragm. et icon, simplici in hb. Gray.). 



11. A. guatemalensis, spec, nov., herbacea perennis erecta 3 

 dm. vel ultra alta; caulibus teretibus brunneo-pupureis gracilibus 

 virgatis superne crispe griseo-puberulis basin versus glabratis; inter- 

 nodiis perlongis (7-13 cm.) foHa superantibus; foliis oppositis lanceo- 

 lato-linearibus remote serratis vel integriusculis 3-nerviis utrinque 

 obscure et tenuissime pilosis subtus flavido-viridibus glanduloso- 

 punctatis 5-8 cm. longis 4-7 mm. latis longe attenuatis basi acutis 

 breviter petiolatis; corymbis terminalibus longipedunculatis; densis 

 10-20-capitulatis saepius subglobosis, pedicellis ca. 3 mm. longis to- 

 mentellis; capitulis 5 mm. altis 6 mm. diametro ca. 80-floris; involucri 

 campanulati squamis subaequalibus oblongo- vel lineari-lanceolatis 

 acutis ciliolatis dorso 2-costatis pilosiuscuhs; receptaculo conico 

 ubique paleifero; paleis angustis apice subulato-acutis pallidis corollas 

 subaequantibus; corollis 3.2 mm. longis glabris, tubo proprio fauces 

 paullo vel modice ampliatas aequanti ; achaeniis nigrescentibus glabris 

 lucidis acute angularibus basi callosis apice cum annulo cartilagineo 

 humillimo obscure angulato coronatis. — Ageratum sallcifolium Coult. 

 in J. D. Sm. Enum. PI. Guat. iv. 72 (1895), non Hemsl.— Guatemala: 

 Canchon, Depart. Santa Rosa, alt. 610 m., Oct. 1894, Heyde & Lux, 

 n. 6153 a cl. J. D. Smithio distributa (hb. Gray., hb. U. S. Nat. Mus., 

 hb. J. D. Sm.). 



12. A. platylepis, spec, nov., verisimiliter herbacea perennis; 

 caule tereti primo puberulo maturitate glabrato purpureo folioso; fo- 

 liis majusculis oppositis breviter petiolatis ovato-lanceolatis caudato- 

 attenuatis subremote serratis basi rotundatis vel acutatis utrinque 



