414 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
about 6 to 8, acuminate, ciliate, 0.4 to 1.3 mm. long, united at base into a cup adnate 
to the awns, and to the narrow prolongation of the wings. 
Type Locality: Peru. Types collected by Poeppig (nos. 22 and 1624), 
SPECIMENS EXAMINED: 
Peru: Poeppig 1624 (cotype collection; B). Chachapoyas, Mathews 1382 (K), 
3058 (B, G, K). Without definite locality, Mathews 1735 (K). 
Readily distinguishable by its leaves, which are grayish-tomentulose or densely 
pilosulous beneath, and by its broad, mostly rounded phyllaries, the inner with 
submembranaceous tips. 
2. Oyedaea scaberrima (Benth.) Blake. 
Lipochaete scaberrima Benth.; Hook. Journ. Bot. 2: 43. 1840. 
Zexmenia scaberrima Benth. & Hook.; Hook. & Jacks. Ind. Kew. 27: 1250. 1895. 
Shrubby, the branches apparently drooping; stem ashy brown, slender, in youth 
densely tuberculate-hispidulous with ascending hairs, in age subglabrate but densely 
brownish-tuberculate; leaf blades 6 to 7.5 cm. long, 1.6 to 2.5 cm. wide, lanceolate 
or lance-ovate, acuminate, cuneate at base, obscurely serrulate with 8 to 10 pairs of 
appressed mucronate teeth, dull green above, tuberculate-strigillose, lepidote in age, 
beneath slightly paler, rather sparsely tuberculate-hispidulous, pinnate-veined (veins 
6 to 9 pairs), finely and obscurely reticulate; petioles densely tuberculate-hispidulous, 
unmargined, 4 to 6 mm. long; heads about 6 in a terminal narrow panicle, about 2.5 
cm. wide, on densely tuberculate-hispidulous pedicels 1.1 to 1.4 cm. long; disk 9 to 
10 mm. high, 1.2 cm. wide; involucre 4-seriate, somewhat graduated, 7 to 8 mm. high; 
outermost phyllaries linear-lanceolate, strongly indurate at base, rather densely | 
hispidulous-strigillose, the herbaceous apex loose, mucronate; the next series similar \, 
but ovate-lanceolate, acuminate, with broad indurate base and narrow herbaceous \, 
apex; the next similar but merely acute, the innermost oblong and obtuse, with 
scarcely herbaceous tip; rays pale yellow, narrowly oblong, sparsely puberulous and 
gland-dotted on veins of back, 1 cm. long, 3.5 mm. wide; disk corollas sparsely his- 
pidulous on teeth; pales narrow, barely keeled, acute, minutely strigillose toward 
apex, 8 mm. long; achene blackish, oblong, strongly compressed, narrowly winged 
on each side, 5 mm. long, 1.8 mm. wide; awns 2, unequal, slender, minutely ciliate, 
3 to 4mm. long; squamellae about 8 to 10, fimbriate, united below into a cup nearly 
1 mm. high. 
TYPE LOCALITY: Mount Roraima, British Guiana. 
SPECIMEN EXAMINED: 
British Gutana: Mount Roraima, 1839, Schomburgk (type; K, fragm. G). 
Although included in Zermenia by W. W. Jones® in his revision of that genus, this 
species has neutral rays and isa true Oyedaea. Itis distinguished from related species 
by the narrow leaves and phyllaries. ; 
3. Oyedaea wedelioides (Klatt) Blake. 
Zexmenia wedelioides Klatt, Abh. Naturf. Ges. Halle 15: 328. 1881. 
Shrub about 3 meters high; stem dull brown, subterete, tuberculate-strigose, 
glabrate but persistently tuberculate below, the inflorescence densely strigillose- 
hispidulous or shortly hispid-pilose with erect hairs; leaf blades 4.2 to 12.5 cm. long, 
2.2 to 5 cm. wide, ovate or oblong-ovate to oval-ovate, acute or acuminate, at base 
broadly rounded, obscurely serrulate with 15 to 18 pairs of appressed mucronulate 
teeth, above dark green, impressed-nerved, tuberculate-strigose and _strigillose, 
beneath scarcely paler, rather densely hispid-pilose with spreading hairs longer along 
the veins, sparsely gland-dotted, penninerved with 9 to 12 pairs of lateral veins and 
strongly prominulous-reticulate; petioles densely hispid-pilose, 4 to 15 mm. long; 
heads 1.7 to 3 cm. wide, ternately arranged in cymose panicles of 5 to 21 at ends of 
iad 
8 Proc. Amer. Acad. 41: 146. 1905. 
