408 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
oblong-lanceolate or lanceolate, acute to acuminate at both ends, slightly repand- 
denticulate or subentire, resinous-granulose, reticulate, the 15 to 22 pairs of lateral 
veins scarcely prominulous; petioles margined, 2 to 3 mm. long; heads 3 to 6 at ends 
of branches, 3 to 4 cm. broad; peduncles axillary and terminal, 1.5 to 6.5 cm. long; 
disk 8 to 10 mm. high, 8 to 15 mm. thick; involucre 2 or 3-seriate, 6 to 8.5 mm. high, 
the phyllaries linear-lanceolate (0.8 to 1 mm. wide), subequal, subacute, gradually 
narrowed from base to apex, resinous-granulose, sparsely ciliate; rays 8, oolong, 1.2 to 
1.9 cm. long, 4 to 7 mm. broad; disk corollas somewhat resinous-granulose, 4.5 to 5 mm. 
long (tube 1 to 1.2 mm.); pales obtuse, resinous-granulose, 8 mm. long; achenes 
scarcely thickened at maturity, densely silky-villous, 8 mm. long; awns 2, slender, 
subequal, 4 mm. long; squamellae none. 
Type LOCALITY: Tarma, Peru. 
SPECIMENS EXAMINED: 
Peru: Tarma, Dombey 24 (cotype collection; Ber., photo. G., Prod.). Abun- 
dant, dry slopes, Tarma, Department of Junin, altitude 3,000 to 3,500 meters, 
1903, Weberbawer 2385 (Ber., fragm. G). 
Dombey’s plant is labeled “Chile” in the Prodromus Herbarium, but a specimen 
from Dombey in the Berlin Herbarium, presumably of the type collection of DeCan- 
dolle’s variety, is marked as from Tarma, whence also comes Weberbauer 2385, the only 
other collection of this species examined. Flourensia angustifolia is distinguished from 
F. thurifera by its narrowly oblong-lanceolate or lanceolate, denticulate or subentire 
leaves and shorter involucre of linear-lanceolate phyllaries. 
23. Flourensia macrophylla Blake, Bot. Jahrb. Engler 54: Beibl. 119: 47. 1916. 
Branching shrub, the younger branchlets resinous, slightly puberulous; leaf blades 
5 to 8.3 cm. long, 2 to 4 cm. wide, oval or oblong-oval, acute or subobtuse, mucronate, 
broadly cuneate at base, shallowly cuspidate-denticulate above the entire lower third 
with 11 to 17 pairs of teeth, strongly prominulous-reticulate with 12 to 16 pairs of 
lateral veins, shining, resinous-granular; petioles narrowly margined, 1.5 to3 mm. long; 
heads 2 cm. wide, in cymose panicles of 1 to 3, at apex of terminal and axillary pedun- 
cles 3 to 5.5 cm. long; disk 7 to 7.5 mm. high, 8 to 11 mm. thick; involucre 3-seriate, 7 
to 8 mm. high, the phyllaries subequal, lanceolate or oblong-lanceolate, not widened 
above, subacute, resinous-granular and very sparsely ciliolate, the outer loose; rays 
about 8, oval, 8 mm. long, 3.5 mm. wide; disk corollas resinous on teeth, 3.5 mm. long, 
the tube 0.8 mm. long, gradually widened into the throat; pales colorate and resinous 
at apex, scarcely mucronate, 6.5 mm. long; immature achenes silky, 3.5 mm. long; 
awns 2, slender, ciliate, 2.2 mm. long; squamellae none. 
TypPE LOCALITY: Between Matucana and Tambo de Viso, Peru. 
SPECIMENS EXAMINED: 
Peru: Stony places, altitude 2,370 to 2,650 meters, along Lima-Oroya Railroad, 
between Matucana and Tambo de Viso, December 26, 1901, Weberbauer 119 
(type, Ber., photo. and fragm. G). 
This species may be separated from F. thurtfera and F. angustifolia by its oval or 
oblong-oval, regularly denticulate leaves, small heads, and small rays. 
EXCLUDED SPECIES. 
FLOURENSIA ATACAMENSIS (Phil.) Reiche, Anal. Univ. Chile 112: 146. 1903. 
Helianthus atacamensis Phil. Anal. Mus. Nac. Chile Bot. 1891: 48. 1891. 
This species, of which I have examined authentic material in the Berlin Herbarium, 
is identical with Viguiera pazensis Rusby." 
FLOURENSIA CORYMBOSA DC. Prodr. 5: 592. 1836. 
This species is properly known as Viguiera revoluta (Meyen) Blake. 
13 See Blake, Contr. Gray Herb. n. ser. 54: 142. 1918. 
4 Contr. Gray Herb. n. ser. 54: 121. 1918. 
