416 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
5. Oyedaea rusbyi Blake, sp. nov. 
Shrub with erect branches; stem terete, pale brown, densely tuberculate-strigillose 
and hispid-strigose with tuberculate-based hairs, at length glabrate; leaf blades 4.5 
to 9.5 cm. long, 1.8 to 3.5 cm. wide, oblong-ovate to lance-ovate, acute to acuminate, 
mucronate, at base rounded, obscurely appressed-serrulate, slightly revolute, penni- 
nerved with 10 to 15 pairs of lateral veins, above dull green, rugulose and impressed- 
nerved, densely and very harshly tuberculate-strigillose, beneath scarcely paler, 
venose-reticulate, densely, nearly uniformly, and somewhat harshly pilosulous- 
hispidulous with spreading hairs, along the veins strigillose-hispidulous with sub- 
tuberculate-based hairs; petioles unmargined, densely tuberculate-strigose, 4 to 10 
mm. long; heads 1.8 to 2.1 cm. wide, numerous, cymose-panicled at tips of branches; 
pedicels densely hispidulous, 7 to 14 mm. long; disk 8 to 10 mm. high, 8 to 12 mm. 
thick; involucre 4 to 5-seriate, strongly graduated, 4 to 5 mm. high, the phyllaries 
triangular-ovate to (innermost) oblong-ovate, below strongly indurate and subcori- 
aceous, ciliate, on back sparsely strigillose or glabrous, the short, abruptly herbaceous, 
reflexed or spreading, deltoid apex subacute or obtuse; rays about 12, yellow, nar- 
rowly oblong, 9 to 10 mm. long, 1.8 to 2.5 mm. wide; disk corollas yellow, puberulous 
on teeth, with very slender tube and cylindric-funnelform throat, 5.7 mm. long 
(tube 1.8 to 2 mm.); pales narrow, carinate, acuminate, at apex minutely ciliolate, 
8 to 8.5 mm. long; achenes (very immature) appressed-pubescent; awns 2, equal, 1.8 
mm. long; squamellae about 8, lanceolate, acuminate, lacerate, united to middle into 
a cup. 
Type in the United States National Herbarium, no. 26728, collected at Reis, 
Bolivia, at an altitude of 455 meters, June, 1886, by H. H. Rusby (no. 2138). Also 
in the British Museum, the Gray Herbarium, and the Kew Herbarium. 
The type collection of this species was originally recorded by Britton ® as a ‘‘Calea 
probably undescribed,’ and has generally been referred in herbaria to Zermenia or 
Viguiera. It represents, however, a typical species of Oyedaea, distinguished from 
O. lanceolata, ita nearest ally, by itssmaller involucre and by having its leaves densely 
hispidulous-pilosulous beneath. 
6. Oyedaea lanceolata (Rusby) Blake. 
Calea lanceolata Rusby, Bull. N. Y. Bot. Gard. 8: 132, 1912. 
Shrub, 1.3 to 6.6 meters high, the trunk 6.5 cm, in diameter or less; stem lepidote- 
tuberculate below, above tuberculate-hispid-strigose and finely hispidulous; leaf 
blades 3.3 to 11 cm, long, 1 to 3.5 cm. wide, lanceolate or ovate-lanceolate, acuminate, 
at base cuneate or rounded-cuneate, entire or obscurely serrulate, somewhat revolute, 
penninerved with about 12 pairs of veins, green on both sides, above very harshly 
tuberculate-strigose and strigillose, in age tuberculate, beneath spreading-hispidu- 
lous and gland-dotted, along the veins hispid; petioles slender, densely tuberculate- 
hispidulous and glandular, 3.5 to 12 mm. long; heads numerous, cymose-paniculate, 
2.1 to 2.8 cm. wide; pedicels densely hispid and hispidulous, 2 to 20 mm. long; 
disk 10 to 11 mm. high, 8 to 10 mm. thick; involucre 4-seriate, graduated, 4.8 to 6 
mm. high, the outer phyllaries oblong-ovate, the inner oblong, obtuse or rounded, 
rarely subacute, ciliate or ciliolate and above more or less glandular-strigillose, below 
indurate, yellowish, with subherbaceous, usually spreading, triangular apex, the 
inner scarcely at all herbaceous; rays 10 to 12, golden, oblong, 2 or 3-denticulate, 7 
to 10 mm. long, 2.8 to 3.5 mm. wide; disk corollas yellow, puberulous on teeth, with 
cylindric-funnelform throat, 4 to 5.3 mm. long (tube 1 to 2 mm.); pales acute, strigil- 
lose, 5.8 to 7 mm. long; achenes oblong, appressed-pubescent, 4.8 mm. long, narrowly 
winged; awns 2, unequal, 1.8 to 3.5 mm. long, united at base with about 12 unequal 
squamellae into a corona about 0.8 mm. long. 
Type Locauity: Apolo, Bolivia. 
® Bull. Torrey Club 19: 151. 1892. 
