ROBINSON. — NEW SPERMATOPHYTES, CHIEFLY FROM MEXIOO. 41 
streams, Tarascon, Mexico, 28 October, 1905, C. G. Pringle, no. 10,118 
(type, inhb. Gray). According to note of Mr. Pringle this variety grows 
to a, height of 3-4.5 m. 
Verbesina pedunculosa Robinson, n. comb. <Actinomeris peduncu- 
losa DO. Prod. v. 576 (1836). Verbesina Capitaneja Nees, Linnaea, 
xix. 729 (1847) ; Rob. & Greenm. Proc. Am. Acad. xxxiv. 540 (1899). 
Verbesina pleistocephala Robinson, n. comb. ncelia pleistoce- 
phala J. D. Smith, Bot. Gaz. xiii. 189 (1888), & Enum. Pl. Guat. i. 22 
(1889). Verbesina Donnell-Smithii Coult. Bot. Gaz. xx. 50 (1895) ; 
J.D. Smith, Enum. Pl Guat. iv. 88 (1895); Rob. & Greenm. Proc. 
Am. Acad. xxxiv. 556 (1899). 
Coreopsis Pringlei Robinson, n. sp., fruticosa ramosa ; ramis tereti- 
bus a cortice ochraceo-griseo obtectis ; ramulis striatis viridibus plus 
minusve 6-angulatis foliosis ; foliis oppositis petiolatis bipinnatifidis 
pallide viridibus glaberrimis vel vix pilosiusculis 2-4 cm. longis 1-3 em. 
latis, segmentis patentibus angustissime linearibus leviter acutatis in- 
tegris vel cum lobis secundariis paucis similibus instructis 4-16 mm. 
longis 0.6-0.8 mum. latis ; capitibus terminalibus solitariis vel ad 3-5 
corymbosis pedunculatis erectis vel nutantibus 3 em. latis (ligulis pa- 
tentibus inclusis) ; pedunculis 1-4 cm. longis nudis vel in media parte 
cum bractea unica lineari instructis; involucri campanulati squamis 
exterioribus ca. 8 herbaceis lineari-oblongis 3-5 mm. longis 1 mm. 
latis apice rotundatis basi pilosiusculis, squamis interioribus ovato- 
oblongis subseariosis acutatis ca. 6 mm. longis striatis flavido-brunneis ; 
ligulis ca. 8 juventate supra aureis subtus flavidis maturitate laete 
flavis oblongis ca. 1.2 cm. longis 4-6 mm. latis, nervis atrobrunneis ; 
paleis linearibus pallidis brunneo-lineolatis apice obtusis eroso-ciliatis ; 
achaeniis disci linearibus valde obcompressis in facie interiore et in 
marginibus valde villosis in facie exteriore subglabris 5 mm. longis 
(vix maturis); pappi aristis 2 pallidis villoso-plumosis attenuatis 3-4 
mm. longis. — Dry ledges, San Juan del Rio, Queretaro, Mexico, alt. 
1920 m., § September, 1905, C. G. Pringle, no. 10,050 (type, in hb. 
decidedly ligneous stem. a 
Tridax platyphyila Robinson, n. sp., herba perennis laxe ramosa 
pubescens ; caulibus teretibus viridibus vel purpurascentibus striatulis 
pubescentibus ; foliis membranaceis oppositis petiolatis supra basin 3- 
herviis, lamina late ovata 6.3-11.5 cm. longa 4.5-10 cm. lata dentata vel 
leviter 3-lobata supra viridi sparse pubescenti cum pilis basi tuberculo- 
incrassatis subtus vix pallidiore in nervis appresso-pubescenti apice 
