248 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
A striking and well marked species most nearly related to E. 
mygindaefolium, Gray, and having similar flexuous many-jointed 
branches, glabrous vernicose leaves, and few rather large heads. It 
differs, however, strongly in leaf-contour, as well as in the puberu- 
lence and somewhat also in the texture of the involucre. 
E. chlorophyllum, Klatt, Bull. soc. bot. Belg., xxxi, pt. 1, 187 
(1892), scarcely differs from E. badium, Klatt, l. c., 186, and should, 
I believe, be reduced to it. The chief distinction indicated by Dr. 
Klatt is the greater length of the involucral scales; but as these are 
from 5 to 6 mm. long in the type specimens of E. badium and do 
not exceed 6 to 6.5 mm. in the type of E. chlorophyllum , this dif¬ 
ference is certainly insufficient to distinguish a species. 
E. chrysocephalum, Klatt, Bot. Beiblatt z. Leopoldina, 1895, 
2, and E. Valverdianum, Klatt, Bull. soc. bot. Belg., xxxi, pt. 1, 
188 (1892), are both JSFeurolaena lobata, R. Br. 
E. collinum, DC., Prodr., v, 164 (1836). Add synonym E. 
plectranthifolium, Klatt, Bull. soc. bot. Belg., xxxi, pt. 1, 193 
(1892), not Benth. 
E. erythropappum, spec. nov. Lignescens ramosum, ramulis 
subteretibus arcuatis striatis fuscis minutissime glanduloso-pulveru- 
lentis; foliis oppositis petiolatis anguste obovatis obtusis vel acutius- 
culis integerrimis vel pauce obscureque dentatis basi acutis 6-8 cm. 
longis, 2.5-3.5 cm. latis undique glabris supra laete viridibus sub- 
lucidis subtus paulo pallidioribus punctatis; petiolo 5-8 mm. longo 
supra canaliculato puberulo; corymbis terminalibus convexis poly- 
cephalis oppositirameis glanduloso-puberulis, bracteis inferioribus 
lanceolatis, superioribus anguste linearibus patentibus, pedicellis 
gracilibus 4-12 mm. longis; capitulis 8-floris 1 cm. altis, involucri 
squamis circa 8 subaequalibus oblongis acutis ciliatis 4 mm. longis 
purpurascentibus; corollis albis 5-6 mm. longis, tubo proprio brevi 
gracili, faucibus longis ampliatis, limbo 5-dentato plus minusve 
puberulo, dentibus ovato-deltoideis; achaeniis 3 mm. longis, nigris 
argute prismaticis hispidulis; pappi setis circa 40 sursum hispidulis 
conspicue roseis.— Mexico: Alvares, San Luis Potosi, 28 Septem¬ 
ber to 3 October, 1902, Dr. Edw. Palmer, no. 200 (type in hb. 
Gr.). 
This species is obviously related to E. micranthum, Less. The 
leaves, however, are subcoriaceous, more obtuse and at the base they 
show no tendency to the crisping which seems always to be present 
in E. micranthum . 
