BLAKE—REVISION OF OYEDAEA. 415 
stem and axillary flowering branches, the ultimate bracts of inflorescence lanceolate, 
with indurate base and herbaceous tip, 3 to 6 mm. long; pedicels densely hispidulous- 
pilosulous, 7 to 25 mm. long; disk 9 to 14 mm. high, 6 to 13 mm. thick; involucre 
4-seriate, graduated, 5.5 to 8 mm. high, the one or two outermost series of phyllaries 
ovate-lanceolate, acuminate, narrowed nearly from base to apex, the inner acute, 
ovate-oblong to oblong, all with strongly indurate, subcoriaceous, yellowish white, 
usually 1-vittate lower portion and lanceolate (outermost) to deltoid, loose or reflexed, 
herbaceous apex (the innermost with an appressed subherbaceous tip), more or less 
densely strigose and strigillose on the herbaceous apex, the outermost so nearly 
throughout; receptacle slightly convex; rays 12 to 18, linear-oblong, barely emargi- 
nate, 7 to 13 mm. long, 2 to 3 mm. wide; disk corollas glabrous except for the his- 
pidulous teeth, slender, 4.5 to 6.8 mm. long (tube 1.5 to 2.2 mm.); pales narrow, 
carinate, acute to acuminate, hispidulous-ciliolate at apex, 6 to 9 mm. long; achenes 
oblong, blackish, sparsely strigillose, winged, 3.5 to 4.5 mm. long, 0.7 to 1.5 wide; 
awns 2, fragile, unequal, minutely ciliolate, slender, 3.5 to 4.5 mm. long; squamellae 
6 to 12, subequal, 0.6 to 1.2 mm. long, lacerate, united below into a cup on the 
- somewhat constricted achene apex. 
Type LOCALITY: Moyobamba, Peru. 
) SPECIMENS EXAMINED: 
Peru: Moyobamba, 1835, Mathews 1383 (type collection; B, G, K). Lamas, 
1835, Mathews 1384 (K). Sandy plains near Tarapoto, 1855, Spruce 3922 
(B, G, K). 
Like the last, this species has neutral rays and is a true Oyedaea, although included 
in Zexmenia by W. W. Jones. It is distinguished from O. reticulata, its closest ally, 
by its broadly round-based leaves and looser inflorescence. 
4. Oyedaea reticulata Blake, sp. nov. 
Shrub or “herb”; stem brown, densely and somewhat harshly appressed-pilose 
and glandular; leaf blades 8.5 to 10.5 cm. long, 2.5 to 4.3 cm. wide, ovate-lanceolate 
or ovate, acuminate, at base cuneate, regularly crenate-serrate with 17 to 20 pairs 
of depressed mucronulate teeth, penninerved with about 8 pairs of veins and 
obscurely triplinerved, reticulate beneath, above dull green, harshly tuberculate- 
strigillose, below rather harshly pilose-hispid and glandular; petioles flattened, 
subappressed-pilose and glandular, 0.8 to 1.2 cm. long; heads several at apex of 
branches, on terminal and axillary 1 to 5-headed peduncles 2.5 cm. long or less, 
2.3 to 3 cm. wide; disk 1.2 em. high, 1 to 1.5 cm. thick; involucre 4-seriate, slightly 
graduated, 8 to 9.5 mm. high, the outer phyllaries triangular-ovate, acute, ciliate 
and glandular-pilose, below indurate and coriaceous, the l-nerved herbaceous apex 
spreading, the inmost phyllaries subobtuse, submembranaceous; rays about 12, 
yellow, oblong, glandular-pubescent on back, 7.5 to 12 mm. long, 3 to 3.5 mm. wide; 
disk corollas yellow, puberulous on teeth, 5.3 mm. long (tube 0.8 mm.); pales firm, 
subscarious, very acute, narrowly carinate, more or less puberulous, 9 to 9.5 mm, 
long; achenes black, sparsely pubescent, narrowly oblong, rugulose, very narrowly 
winged, 5.7 to 6 mm. long, 1.1 to 1.5 mm. wide; awns 2, fragile, unequal, spinulose, 
4.5 to 5.5 mm. long; squamellae about 12, unequal, about 1.4 mm. long, lacerate, 
united to middle into a corona. 
Type in the British Museum, collected at Caqueza, Colombia, at an altitude of 
1,800 meters, by J. Triana (no. 1383); also in the Kew Herbarium; photograph and 
fragments in the Gray Herbarium. 
ADDITIONAL SPECIMEN EXAMINED: 
CotomsB1a: Moist bank, altitude 1,400 to 1,500 meters, Monte Redondo to 
Quetame, Cundinamarca, 1917, Pennell 1860 (N. Y. Bot. Gard.). 
This species is distinguished from 0. wedelioides by its narrower cuneate-based 
leaves and often crowded heads; from O. rusbyi and QO. lanceolata by its larger invo- 
lucre and the longer pubescence of its leaves. 
