426 PROCEEDINGS OF, THE AMERICAN ACADEMY. 
pallidioribus, terminalibus 11-15 cm. longis 4.5-5.5 em. latis obtuse 
acuminatis mucronulatis supra medium paucis dentibus crenatis basi 
abrupte angustatis sicut in petiolulam alatam 1-2 cm. longam, laterali- 
bus similibus minoribus interdum obliquis acumine breviore, inflores- 
centiae paniculis angustis axillaribus longe (ad 8 cm.) pedunculatis 
2-cirrhosis, sepalis 5, 3 mm. longis concavis obtusis late ovatis minute 
pubescentibus duobus exterioribus paulum minoribus, petalis 4, 3 mm. 
longis obovatis vel suborbiculatis unguiculatis rotundatis, duobus supe- 
rioribus squamas gerentibus latas cucullatas apice in appendicem longam 
deflexam productas appendice et marginibus barbatas summo dorso 
crista dilatata subflabelliforme instructas, duorum inferiorum squamis 
inoril * a harhatic enmmoa doren cusnidatis. disci glandis duobus 
oO 
oblongis basi latioribus et callosis inter callos concavis, staminibus 8, 
filamentis crassis extra sparse villosis, antheris introrsis, fructu trialato 
subobovato 1.8 cm. longo 1.3 cm. lato apice leviter emarginato vel 
rotundato basi subacuto. — Guerrero: Iguala Cafion, alt. 915 m., July 
24, 1907, Pringle, no. 10,380. An anomalous species, distinguished 
from all the other species of Urvillea by its biternate leaves. In habit 
it resembles some species of Serjania, but has the fruit of Ureillea. 
Euphorbia (§ Ani i hy 11 ) hali r hil , 0. Sp., erecta annua (!) 
i ramosa, caulibus teretibus gracilibus 3.5-4 dm. altis dichotome 
ramosis pilis albis crispatis dense vestitis, foliis oppositis lanceolatis 
basi valde obliquis subcordatis falcati tis vel obtusiusculis brevissime 
petiolatis ab apice fere ad basin serrulatis pilosis, caulinis 15-19 mm. 
longis 3-5.mm. latis, involucris brevissime pedicellatis in cymosulas 
paucifloras bracteatas ad apices ramulorum congestis turbinatis 
0.6 mm. altis extus glabris intus hirtellis non fissis, lobis ovato- 
lanceolatis pectinatis, glandulis transverse ellipticis 0.5 mm. longis sub- 
concavis appendice rubra vel rubella 0.5 mm. lata integra vel emar- 
ginata, capsulis 1.5 mm. altis brevipedunculatis glabris vel sparse 
pilosis, seminibus laevibus griseis ovatis haud angulatis 1 mm. longi. 
vel facie superiore sparse pilosis, caulinis 6-8 mm. longis 49-0 © 
latis, ramulinis minoribus, involucris in axillis foliorum solitarus 7 
apicibus ramulorum in cymosulas paucifloras aggregatis pedicellatis 
