ROBINSON. — STUDIES IN THE EUPATORIBAE. 45 
the Rocky Mountains to New Mexico 
Eupatorium rapunculoides, n. comb. Stevia rapunculoides DC. 
Prod. v. 124 (1836). Hupatorium dasucarpum Gray, Proc. Am. Acad. 
Xxli. 420 (1887) ; Robinson, ibid. xxxvi. 478 (1901). 
Evparorium rEeMorirotium DO. Prod. v. 165 (1836). This species 
is reduced without comment by Baker in Mart. Fi. Bras. vi. pt. 2, 205 
(1876) to #. Vitalbae DC., but the two species in question have not 
the smallest resemblance. It can only be inferred that Mr. Baker was 
misled through some transposition of labels or similar slip. The plants 
are by no means similar in habit, leaf texture, inflorescence, or in- 
volucre. The marked difference in the size of the heads is quite suffi- 
cient to show them distinct species. In # Vitalbae the florets, 
including the mature achene, are 10-12 mm. long, while in 4. remoti- 
Jolium they are, when measured in the same manner, only 4-5 mm. 
Tn range it extends from Iowa to British Columbia and southward in 
Lupatorium resinosum Poepp. [& Endl.] Nov. Gen. et Spee. iii. 54 
(1845), not Torr. From an examination of the type-specimen of this 
obscure species, which is to be found in the herbarium of the Imperial 
Natural History Museum at Vienna, it is clear that it is identical with 
E. Lazvieatum Lam. Dict. ii. 408 (1786). 
EvpaToRIuM RUBRICAULE HBK. Nov. Gen. et Spee. iv. 124 (1820). 
Although excellently described by Kunth, this species appears never 
to have been recognized. Hemsley (Biol. Cent.-Am. Bot. ii. 100) refers 
no material to it beyond the original specimen collected by Humboldt 
& Bonpland, and no more recent collection of it seems to be on 
The type was found, however, to be exactly the plant for some years 
known as E. amplifolium Gray, Proc. Am. Acad. xv. 28 (1880), and 
well shown by the following exsiccatae: Parry & Palmer 'S no. 334 
from San Luis Potosi, Pringle’s no. 4272 from cool cafions near 
Pazcuaro, Michoacan, Palmer’s no. 165 (coll. of 1902) from Alvarez, 
San Luis Potosi, and L. C. Smith’s no. 858 from the mountains of 
Jayacatlan, alt. 2150 m., Oaxaca. Dr. Gray’s later specific name 
~ must, of course, drop into synonymy. Why &. rubricaule = 
which is a large-leaved — —_ have warps to £. 
dalupense Spreng. by the Index Kewensis 18 no : 
S Mercasads aideeebtind Gray, PI. Wright. i. 88 (1852). This 
species has in general ovate-oblong sagittate or hastate ose con- 
siderably longer than broad. In its wide deltoid leaves ca ollowing 
plant is strikingly different, although maintaining the essential c 
teristics of the species. Le : 
Var. eek tid n. var., fruticosum oppositirameum habitu 
