Eupatorieae novae Americanae. II. 149 
On the mesa de la Sandia, Durango, Mexico, alt, 3050 m, TI 
1905, C. G. Pringle, no. 10144 (type, in hb. un 
This species possesses a very close habital similarity to $, Pringlei 
Wats., but may be readily distinguished by its copious glandular indu- 
dn and especially by the presence of the aristate pappus, which is 
quite lacking in S. Pringlei. 
23. Fleischmannia arguta B. L. Robinson, 1. c., p. 35. — Eupatorium 
argutum H. B. K., Nov. Gen. et Spec., IV, 121 (1820). E. quinquesetum 
Benth. ex Oerst, Vidensk. Meddel, 1852, p. 79. Fleischmannia rhodostyla 
Sch. Bip., Flora, XXXII, 417 (1850). 
The type of Eupatorium argutum H. B. K. is still extant at the Museum 
of Natural History in Paris. It is clearly just the plant which has long 
passed as Fleischmannia rhodostyla and its much earlier specific name 
must accordingly be taken up. 
24. Trichocoronis sessilifolia B. L. Robinson, l. c., p. 35. — Argeratum 
sessilifolium Schauer, Linnaea, XIX, 715 (1847); Hemsl., Biol. Cent.-Am. 
Bot. II, 83 (1881). Trichocoronis Greggii Gray, Pl. Wright., I, 89 (1852). 
The type of Schauer's Ageratum sessilifolium is Aschenborn's no. 4, 
of which there is a well preserved specimen in the Royal Botanical 
Museum in Berlin. The habitat is given as Mexico, but without more 
particular locality, and the species has remained obscure. On examination 
it proves to be identical with the species later described as Trichocoronis 
Greggii by Dr. Gray. Gregg's plant (no. 807 of his last Mexican collection) 
is said to have come from the region between Mazatlan and the City of 
Mexico. Fortunately Mr. Pringle has redis-covered the species, and the 
fuller data of his label give definite information of at least one station, 
namely, marshes of Atequiza in the state of Jalisco. Priority necessitates 
the transference of the original specific name. 
25. Dissothrix imbricata B. L. Robinson, l. e, p. 35. — Stevia imbri- 
cata Gardn. in Hook., Lond. Jour. Bot., V, 458 (1846). Dissothrix Gardneri 
Gray in Hook., Jour. Bot. & Kew Misc., III, 223 (1851); Bak. in Mart., Fl. 
Bras., VI, pt. 2, 272 (1876). 
Dr. Gray's specific name, coined at a time of greater nomenclatorial 
laxity, must, according to priority, give place to the original name given 
by Gardner. 
26. Trichogonia rhadinocarpa B. L. Robinson, l. c., p. 36. — T. podo- 
carpa Bak. in Mart., Fl. Bras., VI, pt. 2, 216 (1876) pro parte, non Sch. Bip. 
Suffrutescens ramosa; ramis subsimplicibus teretibus striatis viridi- 
bus puberulis foliosis; foliis alternis lanceolati-oblongis crenato-serratis 
ad apicem obtusiusculum angustatis basi rotundatis vel breviter abrupteque 
cuneatis petiolatis utrinque pubescentibus et glanduloso-atomiferis viridi- 
bus subtus vix pallidioribus membranaceis 3—5,5 cm longis 1,3—2,5 cm 
latis, petiolo 8—15 mm longo subtomentoso; inflorescentia terminali co- 
rymbosa ca. 16-capitulata, bracteis filiformibus 3 mm longis, pedicellis 
filiformibus plus minusve flexuosis ca. 7 mm longis; capitulis ca. 18-floris 
