Blake — A Revision of the Genus Viguiera 95 
marginate, mottled, sparsely and minutely puberulous, truncate 
at apex, 2.7 mm. long. Pappus none. — Gymnolomia canescens 
Rob.! Proc. Am. Acad. xxvii. 174 (1892); Rob. & Greenm. Proc. 
Bost. Soc. Nat. Hist. xxix. 96 (1899). — MEXICO: San Luis 
Potosi: brackish marsh, Las Tablas, 27 June 1890, Pringle 3611 
(COTYPE COLL.: G.); alkaline plains, Hacienda de Angostura, 27 
June 1891, Pringle 3763 (corypE cout.: G.); Media Luna, near 
Rio Verde, 2-8 June 1904, Palmer 74 (G.).—It has seemed ad- 
visable to change the name of this species to avoid confusion with 
V. canescens DC., a species here reduced to V. dentata (Cav.) 
Spreng. 
Series D. Pinnatilobatae, ser. nov. Frutices vel rare herbaceae 
(2?) valde ramosae, foliis saepe alternis valde pinnatilobatis, capi- 
tulis mediocribus, involucri 2-3-seriati phyllariis lanceolatis vel 
subulato-lanceolatis basi valde induratis costatis et vittatis apice 
abrupte angustatis herbaceis, corollis disci basi apicem achenii 
calvi glabri calyptratim tegentibus. — Species typica Zaluzania 
pinnatilobata Sch. Bip. (= V. pinnatilobata (Sch. Bip.) Blake). — 
Four species ranging from Texas to Oaxaca, unique in their pin- 
nately lobed leaves. Species 43-46. 
©. ARrODen BEINGS. ee ck eae ee 46. V. stenoloba. 
a. Leaf-lobes blunt (the terminal sometimes acute), b. abe 
Leaves densely and softly tomentose beneath ....44. V. zaluzanioides. 
b. Leaves not densely and softly tomentose beneath, 2 
c. Leaves several-lobed, subcanescent beneath. . ‘a. V. pinnatilobata. 
c. — hastately 3-lobed, scarcely subeanescent 
Ne SE Pe DN en SOIR eee ree ONY 45. V. tripartita. 
43. V. pinnatilobata (Sch. Bip.), comb. nov. Frutescent, about 
1 m. high, the stem slender, more or less puberulous with incurved 
or somewhat spreading hairs or substrigillose, in age subglab- 
rate; bark grayish. Leaves alternate or sometimes opposite, 
ovate or deltoid-ovate in outline, obtuse to acutish at apex, cune- 
ately or usually abruptly contracted into an often long margined 
petiole, deeply pinnately lobed (the lobes 1-3 pairs, short, broad, 
blunt, entire or slightly lobed or dentate), weakly subtriplinerved 
and subreticulate below, above green, closely strigillose, the hairs 
with prominent persistent glandular bases, beneath subcanescent 
with a fine incurved or somewhat spreading pubescence and gland- 
dotted, 2-4 em. long, 1.3-3 em. wide across the basal pair of 
lobes, the upper leaves sometimes subentire; petioles margined, 
