626 PROCEEDINGS OF THE AMERICAN ACADEMY. 
achaeniis brunneis graciliter cylindricis puberulis apice a cupula 
albida pappifera coronatis; pappi setis numerosis albis tenuis- 
simis obscure barbellatis. —Tepic, Mexico, 5 January to 6 February, 
1892, Dr. Edward Palmer, no. 2018 (type,.in hb. Gray and hb. U. 8. 
Nat. Mus.). A species readily recognized by its slender at first sight 
apparently naked stems and loose corymbose inflorescence. It is prob- 
ably related to P. Seemannii Gray, which, however, has smaller heads 
and narrower green and granular involucral scales, larger leaves, ete. 
Perezia platyptera, n. sp., herbacea robusta 1.5 m. alta; caule glabro 
striato basibus foliorum valde decurrentium conspicue lateque alato ; 
alis cuneiformibus ad insertionem folii ca. 1 cm. latis herbaceis reticulato- 
venosis deorsum gradatim decrescentibus saepissime denticulatis ; foliis 
nceolati-oblongis firmiusculis acut inatisca. 12cm. longis 3-4em. 
latis argute denticulatis utrinque reticulato-venosis ; inflorescentia 
corymboso-paniculata, ramis folioso-bracteatis ; bracteis lanceolatis ©. 
3.cm. longis subintegris conspicue decurrentibus ; capitulis ca. 15-floris 
1.5cm. longis ; involucri campanulati squamis multiseriatim imbricatis: 
linearibus attenuatis valde inaequalibus glanduloso-puberulis ; corolla 
rosea ca. lem. longa alte bilabiata; achaeniis subteretibus fusco- 
brunneis glandulosis ; pappi setis numerosis laete albis ca. 7 mm. longis. 
—In clayey soil, Sierra Madre Mountains, Michoacan or Guerrero, 
Mexico, 22 January, 1899, alt. 1700 m., EZ. Langlassé, no. 773 (type ™ 
oa Gray). A species readily distinguishable by its broadly winged 
ms, 
