118 PROCEEDINGS OF THE AMERICAN ACADEMY. 



achenes 3 mm, long, glabrous or sparingly jiuberulent. — Mexico. 

 State of Durango : vicinity of the City of Durango, April to November, 

 1896, Dr. Edward Palmer, no. 793 (hb. Gr., and lib. U. S. Nat. Mas.). 



The genus here proposed is related to Dysodia and Hymenatherum. 

 From the former it differs in the character of the pappus, and from the 

 latter in the fewer scales of the pappus, as well as in the character of the 

 involucre. 



The genus is dedicated to Dr. Manuel Urbina, Director of the 

 National Museum, City of Mexico. 



Pectis latisquama, Schz. Bip. A low subprostrate herbaceous 

 jjerennial, numerously branched from a suffruticose base : stems leafy, 

 hirtellous-pubesceut : leaves linear or linear-lanceolate, 1 to 2 cm. long, 

 2 to 3 mm. broad, acute, somewhat revolute-margined, bearing 3 to 5 

 pairs of cilia near the base, glabrous on both surfaces: heads 10 to 

 12 mm. h\"\\, terminatinij the stem and branches on 1 to 3 mm. lonij 

 puberulent naked or bracteate peduncles : scales of the involucre 5, 

 oblong-elliptic or obovate, 6 to 7 mm. long, 4 to 5 mm. broad, rounded at 

 the apex, obtusely keeled, ciliate, more or less purplish-tinged, glabrous : 

 ray-flowers usually 5 ; tube 2 to 3 mm. long, shorter than the longest of 

 the numerous unequal pappus-bristles; rays orange-yellow, oblong-ovate, 

 6 to 7 mm. long, 3 to 5 mm. broad: disk-flowers 10 to 20 ; pappus of 

 numerous bristles, the longer two-thirds as long as the corolla : achenes 

 of both ray- and disk-flowers pubescent. — Ace. to Gray, Proc. Am. 

 Acad. V. 181, name only. Pectis canescens, Gray, 1. c. xix. 47, in part, 

 as to citation in synonomy, not HBK. P. canescens, Fernald, 1. c. 

 xxxiii. 82, in part, as to Schajfner's no. 85 (hb. Gr.), not HBK. — 

 Mexico. State of Mexico : Valley of Mexico, Schaffner^ no. 85 (hb. 

 Gr.). State of Puebla : thin soil, Amozoc, altitude 2100 m., 9 Septem- 

 ber, 1902, a G. Prinrjle, no. 8604 (hb. Gr.). 



Neuroleena macrocephala, Schz. Bip. ace. to Hemsley, Biol. 

 Cent. -Am. Bot. ii. 233. Neurolcena semidentata, Klatt, in Leopoldina, 

 XX. 94 (reprint, p. 7). The type specimens of these two described 

 species are both in the Gray Herbarium, and the identity of the two 

 plants is without question, hence it becomes necessary to retain the older 

 combination and treat the other as a synonym. 



Neurolaena macrophylla. Stem sulcate, striate, reddish-brown, 

 appressed-puberulent : leaves alternate, thin or membranous, somewhat 

 rhombic-lanceolate, including the petiole 1.5 to 4 dm. long, 4 to 9 cm. 

 broad, acurninate, shallowly dentate to denticulate, gradually narrowed 

 below into a 1 to 3 cm. long petiole, dark green and sparingly puberulent 



