$2 PROCEEDINGS OF THE AMERICAN ACADEMY. 
impressis, dentibus limbi utroque ca. 5; capitulis ca. 30-floris paucis 
4-11 in corymbo terminali, pedicellis ca. 1 cm. longis erectis vel ascen- 
dentibus subfiliformibus. atropurpureis adpresse villosulis, bracteis 
linearibus ; involucri campanulati squamis ca. 15 lanceolati-linearibus 
subaequalibus vix imbricatis obtusis vel acutiusculis pilosis ca. 5 mm. 
longis margine praesertim apicem versus pulcherrime ciliatis ; corollis 
albis 4 mm. longis, tubo proprio gracili fauces ampliatos subcylindratos 
subaequanti, dentibus limbi 5 acutiusculis hispido-pilosis ; achaentis 
prismaticis praesertim in angulis breviter hispidulis ; pappi setis pul- 
cherrime roseis. — Steep rocks, Ixtaccihuatl, Mexico, alt. 2440 m., 
January, 1906, C. A. Purpus, no. 1578 (type, in hb. Gray). This 
attractive species of Lupatorium was submitted to the writer by Mr. 
T. S. Brandegee. It approaches EZ. prunellifolium HBK., but differs 
in its slender flexuous procumbent stems, and more evenly and sharply 
serrate leaves, which are essentially glabrous above. L. oligocephalum 
DC., an imperfectly known species, may also be of this affinity ; but 1t 
is deseribed as having glabrous involucral scales. 
Eupatorium hospitale Robinson, n. sp., arboreum ; ramis 6-angu- 
latis striatis molliter lignosis medullosis glabris ; foliis oppositis lance- 
olato-oblongis serratis vel subintegris petiolatis penninerviis utrinque 
glabris crassis siccitate nigrescentibus pellucide punctatis lineolatis- 
qué caudato-acuminatis basi attenuatis 16-18 cm. longis 5-6 cm. latis; 
panicula terminali pyramidata oppositiramea patenter ramosa obsolete 
pilosiuseula vel glabra multicapitulata ; capitulis in summis partibus 
ramulorum sessilibus parvis ca. 6-floris ; squamis involucri valde nae — 
qualibus, interioribus oblongis obtusis 5 mm. longis paucis caducis- 
Simis, exterioribus multo brevioribus imbricatis dorso margineque 
pilosiuseulis apice rotundatis persistentibus aetate patentibus ; flos- 
culis vero similiter albidis vel viridescentibus ; corollis 4 mm. longi 
tubo proprio gracili, faucibus cylindratis saepius vix ampliatis ; achae- 
niis ca. 3 mm. longis brunneis acute 5-angulatis basi attenuatis 12 
faciebus concavis pilosis ad angulos etiam hispidulis ; pappi setis Sot 
didis ca. 35 corollam subaequantibus. — KE. vanillosmoides Hemsl., Biol. 
Cent.-Am. Bot. ii. 102 (1881), not Sch. Bip. ex Bak. in Mart. Fl. Bras. V1. 
pt. 2, p. 346 (1876). — Mirador, Vera Cruz, Mexico, Liebmann, no. 43 
(type, in hb. Gray), Sartorius (hb. Gray); Orizaba, Mexico, October, 
1855, Schaffner (hb. Gray), Botteri, no. 613 (hb. Gray). This well 
marked species appears never to have been described. The plant i 
question has been repeatedly distributed as Eupatorium vanillosmoides 
Sch. Bip., but the species to which Schultz really gave this name was 
a Brazilian plant of entirely different affinity, referred by Mr. Baker 
(FL Bras. vi. pt. 2, p. 346) to the synonymy of Z. pyrifolium pe. It 
