36 PROCEEDINGS OF THE AMERICAN ACADEMY. 



scales nearly or quite as long as the acheiie. — Mexico. State of 

 Hidalgo: on chalk bluffs of Tula, altitude 2075 m., 20 September, 1902, 

 C. G. Pringle, no, 11,361 (hb. Gr.). 



The habit and general appearance of G. argyrocarpa is like G. Ber- 

 landieri, Gray, from which, however, it differs by the longer pappus, 

 fewer ray-flowers, and by the more densely pubescent achenes. From G. 

 eriocarjya, Gray, it differs in having fewer flowers in the head, a merely 

 convex not high conical receptacle, and by the strongly appressed 

 pubescence of the achene. 



Erigeron irazuense, n. sp. Suffrutescent: stems erect or ascending, 

 1 to 2 dm. high, pilose-pubescent, jiurplish : leaves spatulate to oblan- 

 ceolate, 1 to 3.5 cm. long, 3 to 8 mm. broad, apiculate-acute, sparingly 

 raucronate-dentate in the upper half, gradually narrowed below the 

 middle to a winged subpetiolar base, pilose-hirsute on both surfaces : 

 heads few, 10 to 12 mm. high, terminating the stem and branches on 

 3 cm. or less long pubescent peduncles : involucre 2-3-seriate, pubescent ; 

 bracts of the involucre lance-attenuate, equalling or slightly exceeding 

 the numerous flowers of the disk, more or less purplish; the outer bracts 

 somewhat shorter than the inner : ray-flowers 3-seriate ; rays narrow, 

 white or roseate : achenes pubescent. — Costa Rica. " Endroits 

 humides," La Playita, altitude, 3300 m., Volcan Irazu, 31 January, 1900, 

 H. Pittief, no. 14,075 (hb. Gr., and hb. Physico-Geogr. Cost. Ri.). 



DiPLOSTEPHiUM ScHULTZii, Wedd. Chloris Andina, i. 204. D. 

 rupestre, Klatt, Bull. Soc. Bot. Belg. xxxi. pt. 1, 197, reprint, p. 15, not 

 Wedd. The late Professor Klatt referred Pittiers no. 178, collected on 

 the summit of Mount Irazu, Costa Rica, 30 March, 1888, to Dlplostephium 

 riipestre, Wedd. A careful study of the specimen under this number in 

 the Gray Herbarium shows that it is identical rather with D. Schidtzii, 

 Wedd. To this species is also to be referred Pittier's no. 14,072 (hb. 

 Gr., and hb. Inst. Phisico.-Geogr. Cost. Ri.). As far as known to the 

 writer D. Schidtzii has not been hitherto recorded from North America. 



Baccharis glandulosa, n. sp. Glandular-pubescent throughout : 

 stems caespitose from a perennial root, erect, 0.5 to 1 m. high, striate, 

 reddish-brown : leaves alternate, sessile, amplexicaul, lanceolate, 5 to 

 8 cm. long, 1 to 1.5 cm. broad, acute, mueronate-denticulate, dark green 

 above, paler beneath : inflorescence a terminal leafy paniculate cyme : 

 heads of the pistillate plant about 1 cm. high with many (100-120) pistil- 

 late flowers surrounding 8 to 15 hermaphrodite flowers in the centre of 

 the head; involucre campanulate ; bracts of the involucre unequal, 4-5- 

 seriate, linear-attenuate, more or less i3uri)lish, the outer shorter than the 



