v0 CONTRIBUTIONS TO WESTERN BOTANY 
aairs. Heads globose-ovate, 7 mm. wide and with golden-yellow 
rays nearly as long. Ray akenes somewhat flattened and very 
but ray akeues dominating the heads. An insignificant herb. 
tevis serrata Cav., my No 286/4 from the Chireihua mis. 
fascicles of linear and revolute ones aninch long. Petioles vy: ry 
short and margined. Heads about 6 mm, long and 4mm. wide 
and green, Seales linear, 3-nerved, acute, hairy above, in about 
mm, ‘ong, 
ne 5 pappus scales which are capillary above their } mm. Jong 
sie) base. Flowers purple and very short, 
i n \ 
leaves opposite, nearly linear, 2-3 inches long 
acutish, entire, rather thick. The whole upper plant forms 
& Narrow and compound panicle of iunumerable, very stall and 
erect heads, each on a filiform pedicel 1-3 mm. Jong. Upper 
: arrow lines on the inner face, 
: » 8Mooth, with 2-4 linear, con- 
vex and hyaline, loose, equal, anda little lacerate bracts. F 
vrs 2-3 m the heads. Corolla lobes ex 
longer than the very short, wide and w 
and no pappus and half as long as bracts. Thi 
ed . ite unique 
plant has the corolla of Mikania b elena i 
aad ot Gavin ut absence of climbing habit 
upatorium megaphyllum n. sp. X 
: : es - Sp. No. 27868, La 
Barranca, age wee Nov. 1 1930, 4 ialttand coarae plant w th 
; y Cb. Wh and lenver a foc t or ] ; | is 
olate, sharply acute, with Vveny low-apiculate desth. sieepity con 
