he - 
VoL. 5] New Species of Mexican Plants. 259 
The plant has a tendency to blacken while drying. The pap- 
pus scales are often of unequal length, and the ribs of the akenes 
are ciliate. Collected at Boca del Monte and Esperanza, Puebla. 
No. 2464. 
Encelia maculata. Frutescens, ramis striatis glabris fuscis: 
foliis oppositis deltoideo-lanceolatis in petiolum alatum abrupte 
attenuatis, irregulariter crenato-dentatis, 6-12 cm. longis, 3-5 
cm. latis, supra scabris, subtus tenuiter pubescentibus; petiolis 
2-3 cm. longis usque ad medium late marginatis ciliato-pubes- 
centibus: capitulis corymbosis, pedunculis aut ex axillis superi- 
oribus aut ramulos terminantibus: pedicellis 0.5-10 mm. longis 
albo-tomentosis: involucri squamis ovato-lanceolatis tomentosis: 
ligulis circiter 8 oblongo-lanceolatis 1 cm. longis: disci floribus 
numerosis; achzeniis preesertim ad margines longe villosis: paleis 
cum aristis 3-4 mm. longis, paleis intermediis 2-4 inzequalibus 
laciniatis ovatis vel oblongis circiter 1 mm. longis: capitulo 
diametro 1-2 cm. 
The upper surface of the leaves finally becomes glabrous and 
has a spotted appearance, for the very short bristles are decidu- 
ous, leaving their disk-like bases. This species is nearly related 
to £. Pringlei, but seems to be distinct. Collected at San Luis 
Tultitlanpa, Puebla. No. 2520. 
Verbesina Luisana. Fruticulus cortice cinereo ramis juniori- 
bus tomentosis: foliis oppositis ovato-acuminatis basi in petiolum 
anguste alatum attenuatis serratis, supra scabrido-hirsutis cum 
pilis basi pustulatis, subtus tomentosis, 6-7 cm. longis, 2-2.5 cm. 
latis: petiolis 1 cm. longis, alis interdum subereis et decurrenti- 
bus: capitulis 4-6 circiter 1 cm. longis ramos terminantibus vel 
€x axillis superioribus pedunculis 2-4 cm. longis; pedicellis 
6 mm. longis: involucri squamis exterioribus ovatis brevibus, in- 
terioribus oblongo-acuminatis angustis: ligulis circa 2 flavis par- 
vis; antheris fere atris: achzeniis anguste alatis parce pubescenti- 
bus 4-5 mm. longis aristis validis longioribus; paleis flavis acu- 
Minatis conduplicatis aristas superantibus. 
- The narrowly winged petioles are sometimes indistinctly au- 
Ticulate at base and tend to become connate. Collected at San 
Luis Tultitlanpa, Puebla. No. 2523. April 20, 1908. 
