te re ae 
VOL. 5] New. Species of Mexican Plants. 261 
pubescentibus: involucri squamis 2—3-seriatis adpresse strigosis 
ciliatis, exterioribus ovatis, interioribus ovato-acuminatis apici- 
bus herbaceis disco superantibus: ligulis involucro paullum 
longioribus; disci floribus circiter 8; paleis conduplicatis acu- 
minatis flavescentibus: achzeniis disci atro-brunueis crassiusculis: 
pappi aristis circiter 10 inzequalibus 2-3.5 mm. longis. 
From the description this species seems to be near P. chalaro- 
lepis. Collected on Cerro San Luis, Puebla. No. 2518. 
Perymenium glandulosum. Frutex parvus ramis junioribus 
foliisque glandulosis: foliis ovato-lanceolatis basi cuneatis mar- 
gine revolutis, supra scabris, subtus scabro-hirsutis, 2-2.5 cm. 
longis, 6-9 mm. latis; petiolis 2 mm. longis: capitulis ramulos 
terminantibus vel ex axillis superioribus orientibus; pedicellis 
I em. longis: involucri squamis circiter 2—3-seriatis scabris, exte- 
rioribus ovato-acuminatis 3-4 mm _longis, interioribus longe acu- 
minatis 5-6 mm. longis apice patentibus: ligulis 5-6, 5 mm. 
longis, aureis; disci floribus circiter 20; paleis angustis acheeniis 
fere duplo longioribus; pappi aristis circiter 10 inaqualibus 1-3 
mm. longis. 
The leaves, involucres and young branches are very glandular. 
Collected in Barranca de Tlacuilosto, Puebla. No. 2525. 
Perymenium ovatum. Frutex parvus ramulis pubescentibus: 
foliis late ovatis obtusis apiculatis serratis, supra parce pubescen- 
tibus rugosis, subtus pallidioribus pubescentibus, 1.5 cm. latis, 
3 cm. longis; petiolis 5 mm. longis: capitulis paucis ramulos 
terminantibus vel in axillis superioribus solitariis, hemispheericis 
diametro 1 cm. ligulis excludentibus: pedicellis 0.5-2.5 cm. 
longis: involucri squamis circiter 2-seriatis ciliatis, exterioribus 
pubescentibus ovatis 4-5 mm. longis, interioribus ovato-acumina- 
tis: ligulis circiter 10 oblongis 4 mm. latis, 13 mm. longis, 
aureis: disci floribus circiter 20: paleis conduplicatis angusie 
lanceolatis achzeniis duplo longioribus: pappi aristis circiter 15 
inzequalibus 1-3 mm. longis: antheris fuscis. 
The branches are terminated by three heads, the pedicel of the 
central one being much the shortest and sometimes bracteate 
with two small leaves, so as to appear sessile. The solitary pedi- 
cels from the axils of the upper leaves are much longer than the 
