ROBINSON. — NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 47 
faucibus cylindricis et limbo 5-lobato flavescentibus, lobis linearibus 
recurvatis ; pappi setis laete albis tenuibus aequalibus corollam fere 
aequantibus. — On pine-covered crater cone, Uruapan, Michoacan, 
Mexico, alt. 1680 m., 31 October, 1905, C. G. Pringle, no. 10,117 
(type, in hb. Gray). Habitally near C. laevigata Sch. Bip., but differing 
conspicuously in its considerably smaller heads, narrower carinate dark 
purple involucral bracts, and less deeply lobed leaves. 
Perezia arachnolepis Robinson, n. sp., herbacea erecta a basi plus 
minusve decumbenti 1.5 m. alta; caule tereti striato purpureo glabro 
usque ad inflorescentiam perlaxam simplici ; caudice fulvo-lanato ; radi- 
cibus fibriformibus duris atrobrunneis ; foliis oblanceolato-oblongis vel 
oblongo-linearibus sessilibus sagittato-amplexicaulibus usque ad 1.6 
dm. longis 1.7-5.8 cm. latis firmis utrinque viridibus reticulatis supra 
glabris subtus vix pallidioribus sparse puberulis vel glabris argute den- 
ticulatis apice acutis vel breviter acuminatis ; inflorescentia perlaxa 
8-16-capitata ; capitibus ramos elongatos sursum valde squamosos ter- 
minantibus ca. 3 em. diametro; involucro valde turbinato, bracteis 
peduneuli in squamas involucri gradatim transeuntibus anguste lanceo- 
latis vel linearibus apice subulatis margine arachnoideo-lanatis ; co- 
rollis purpureis 1.3 cm. longis glabris ; antheris etiam purpureis ; 
achaeniis atrobrunneis sursum hispidulis 3 mm. longis. — Cafions, 
Chapala Mountains near Guadalajara, Jalisco, Mexico, 13 December, 
1889, C. G. Pringle, no. 2935 (type, in hb. Gray), and in barranca of 
Rio Blanco near Guadalajara, 29 November, 1905, C. G. Pringle, no. 
13,668 (hb. Gray). 
Perezia lepidopoda Robinson, n. sp., precedenti valde affinis her- 
bacea erecta 7-8 dm. vel ultra alta glaberrima ; caule purpureo recto 
- tereti striato foliosissimo in parte superiore ramos simplices valde 
patentes multi-bracteatos unicapitatos gerente ; foliis anguste oblongis 
vel oblongo-linearibus attenuatis acutissimis saepissime recurvatis vel 
em. longis 8-22 mm. latis utrinque glabris viridibus reticulato-venosis, 
dentibus lanceolato-subulatis 2-4 mm. longis divaricatis acutissimis ; 
lineari-lanceolatis acutissimis viridibus vel purpurascentibus striatulis 
obsolete puberulis. — Valley near Cuernavaca, Morelos, Mexico, alt. 
