276 PROCEEDINGS OF THE AMERICAN ACADEMY. 



filiformibus divergentibus 3 mm. longis ; capitulis numerosissimis parvis 

 4 mm. longis ca. 14-floris ; involucri campanulati squamis valde inaequali- 

 bus sub-3-seriatim imbricatis, extimis brevissimis parvis paucis lanceolatis 

 subacutis puberulis, interioribus elliptico-oblongis obtusis vel rotundatis 

 supra mediam partem pubescentibus 2.2 mm. longis, receptaculo leviter 

 convexo paleaceo, paleis caducis linearibus obtusiusculis apice puberulis ; 

 corollis albis minute sparseque glandulosis 2 mm longis, faucibus grad- 

 atim ampliatis tubo proprio vix longioribus, dentibus limbi ovato-deltoideis 

 acutiusculis brevissimis recurvatis ; antheris subtruncatis sed inter apicibus 

 tbecarum connectivo valde expanso evasculoso ; acbaeniis brevibus deorsum 

 angustatis in costis 5 sursum hispidulis, setis pappi ca. 15 albis sursum 

 barbellatis 1.7 mm. longis. — In granitic soil, Sierra Madre in the State 

 of Guerrero, Mexico, altitude 1200 m., 4 November, 1898, E. Langlasse, 

 no. 565 (type, in hb. Gr.). This species shows in its anthers a transition 

 to Ophryosporus. However, the modification of the upper part of the 

 connective into an expanded transparent spongy cushion devoid of vas- 

 cular tissue is clearly a rudimentary form of the terminal appendage. In 

 the true species of Ophryosporus, on the other hand, no such rudiment 

 is visible even under the compound microscope. Furthermore, the true 

 Ophryospori have an involucre of nearly equal subuniseriate scales and a 

 naked disk. 



Eupatorium Michelianum, n. sp. Fruticosum 1.25 m. altum ; 

 ramulis teretibus gracilibus rectis foliosis fulvo-glanduloso-hirsutulis ; 

 foliis oppositis subsessilibus basi rotundatis vel cordatis subamplexicauli- 

 bus elongato-oblongis attenuatis argute serrulatis firmiusculis ad 13 cm. 

 longis 3 cm. latis glabriusculis penninerviis utriuque reticulato-venulosis 

 subtus pallidioribus aureo-atomiferis ; paniculis terminalibus oppositira- 

 meis bracteatis rotundatis ca. 1 dm. diametro ca. 90-capitatis, pedicellis 

 teretibus ca. 5 mm. longis ; capitulis ca. 22 Moris ovoideo-cylindricis 1 cm. 

 longis ; squamis involucri arete adpressis multiseriatim imbricatis apice 

 rotundatis erosis discoloribus, extimis brevissimis suborbicularibus, intimis 

 anguste linearibus; corollis albis anguste tubulosis sursum vix ampliatis, 

 limbo patente breviter 5-dentato ; antheris apice longe appendiculatis ; 

 acbaeniis prismatis 5-costatis deorsum leviter angustatis 3.3 mm. longis 

 in costis hispidulis. — In granitic soil of the Sierra Madre, Guerrero, 

 Mexico, altitude 1200 m., 7 December, 1890, E. Lanylasse, no. 589 

 (type, in hb. Gr.). This species is allied to E. ghtberrimnm, DC, but is 

 glandular-hirsute. It is also near E. Oerstedianum. Benth., from which 

 it differs in its hispidulous achenes and narrower involucre, the lowest 

 scales being suborbicular and not at all herbaceous. It is dedicated to 



